ToolsRift studio · 244 tools
Developer Studio — free developer tools that run in your browser
266 free developer tools: JSON, regex, JWT, cron, diff, formatters, encoders and config generators. Code and secrets stay on your machine.
Start here
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JSON Formatter
Beautify and format JSON with syntax highlighting
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JSON Validator
Validate JSON syntax and get detailed error messages
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Regex Tester Advanced
Flags, groups, replace, cheat sheet.
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Diff Checker
Line-by-line visual differences.
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JWT Debugger
Decode JWT segments and verify.
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Unix Timestamp
Unix — human date + live now.
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Cron Parser
Explain cron and next 10 run times.
All Dev tools
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CSV to JSON
Convert CSV table to JSON array format with proper parsing
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JS Object to JSON
Convert JavaScript object literals to valid JSON format with proper escaping and structure
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JSON ⇄ JSONL Converter
Convert a JSON array to JSONL/NDJSON and back, line by line
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JSON Array Tools
Filter, sort, map and paginate JSON arrays interactively
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JSON Diff / Comparator
Compare two JSON objects and highlight all differences
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JSON Flattener
Flatten nested JSON into a single-level dot-notation object
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JSON Formatter
Beautify and format JSON with syntax highlighting
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JSON Key Extractor
Extract all keys, paths, and values from a JSON object
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JSON Key Sorter
Sort all JSON object keys alphabetically (deep)
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JSON Merger
Deep merge two JSON objects with conflict resolution
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JSON Minifier
Minify JSON to remove whitespace and reduce file size
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JSON Query / Filter
Filter and transform JSON arrays with field conditions
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JSON Repair
Fix broken JSON — trailing commas, single quotes, unquoted keys, comments
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JSON Schema Generator
Generate JSON Schema from sample JSON payloads with type inference and required fields.
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JSON Schema Validator
Validate JSON data against a JSON Schema (draft-7)
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JSON Size Analyzer
Analyze JSON structure depth, key count, and byte size
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JSON String Escape
Escape and unescape JSON special characters in strings
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JSON to .env
Convert flat JSON objects to .env environment variables
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JSON to CSV
Convert JSON array to CSV table format for spreadsheet import
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JSON to Go Struct
Generate a Go struct with json tags from a JSON sample
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JSON to JS Object
Convert JSON data to JavaScript object literal syntax with proper formatting and structure
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JSON to Markdown Table
Convert JSON arrays to GitHub-flavored Markdown tables
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JSON to Python TypedDict
Generate a Python TypedDict class from a JSON sample
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JSON to Query String
Convert a JSON object into a URL query string with bracket notation for nested objects and arrays, fully percent-encoded.
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JSON to SQL INSERT
Generate SQL INSERT statements from a JSON array of objects
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JSON to Table
Render JSON arrays as an interactive HTML table
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JSON to TOML
Convert JSON to TOML configuration format with proper syntax
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JSON to TypeScript
Generate TypeScript interfaces from JSON objects
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JSON to XML
Convert JSON data to XML format with proper tags and structure
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JSON to YAML
Convert JSON to YAML format with proper indentation and structure
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JSON Unflattener
Expand flat dot-notation JSON back to nested structure
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JSON Validator
Validate JSON syntax and get detailed error messages
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JSONC to JSON
Strip comments and trailing commas from JSONC, then validate and reformat as clean JSON
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JSONPath Tester
Test JSONPath expressions and extract values from JSON
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package.json Generator
Generate package.json with project metadata, scripts, and dependencies from form inputs.
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Schema.org JSON-LD Generator
Build schema.org structured data JSON-LD for Article, Product, FAQPage, LocalBusiness, Organization and BreadcrumbList
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TOML to JSON
Convert TOML configuration to JSON format with validation
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XML to JSON
Convert XML to JSON format preserving data structure and hierarchy
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YAML to JSON
Convert YAML to JSON format with proper parsing and validation
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Blank Line Collapser
Collapse runs of consecutive blank lines into a single blank line for tidy documents
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C/C++ Formatter
Format C and C++ code with proper indentation and bracket placement
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C# Formatter
Format C# code with proper indentation and Microsoft coding conventions
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CSS Formatter
Beautify and format CSS code with proper indentation and structure for better readability
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CSS Minifier
Minify CSS by removing whitespace, comments, and unnecessary characters to reduce file size
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CSV Column Aligner
Align CSV columns into an even monospace table so data is easy to read and scan
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Date Format Calc
20+ date format conversions.
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Env File Sorter
Sort .env files alphabetically by key, keep comments grouped and drop empty lines
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GraphQL Formatter
Format GraphQL queries and schemas with proper indentation and structure
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HTML Formatter
Beautify and format messy HTML code with proper indentation and structure for better readability
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HTML Minifier
Minify HTML by removing whitespace, comments, and unnecessary characters to reduce file size
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Indentation Converter
Convert between tabs and spaces with customizable tab size for code formatting
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INI Formatter
Clean up INI config files with normalized sections, spacing around equals and tidy blank lines
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Java Formatter
Format Java code with proper indentation, brackets, and Java conventions
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Java Properties Formatter
Normalize Java .properties files to key=value form, group comments and optionally sort keys
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JavaScript Formatter
Beautify and format JavaScript code with proper indentation and structure for better readability
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JavaScript Minifier
Minify JavaScript by removing whitespace, comments, and shortening variable names to reduce file size
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JS Import Sorter
Sort and group ES module import statements alphabetically, separating external packages from internal relative imports
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Number Formatter
Format numbers with locale-aware thousands separators and fixed decimals using the Intl API — US, EU, Indian and more.
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PHP Formatter
Format PHP code with proper indentation, brackets, and PSR standards
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Prettier Config Generator
Generate .prettierrc with tabs/spaces, quotes, semicolons, line width, and trailing commas.
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Python Code Cleaner
Convert tabs to spaces, trim trailing whitespace and tidy blank lines in Python
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SCSS/LESS Formatter
Beautify SCSS, LESS and CSS with brace-based indentation and one declaration per line
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SQL Formatter
Format SQL queries with proper keywords capitalization, indentation, and line breaks
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SQL Minifier
Minify SQL by stripping comments and collapsing whitespace while preserving string literals
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TOML Formatter
Format TOML configuration files with proper structure and indentation
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Universal Code Beautifier
Generic code beautifier that works with any programming language syntax
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Whitespace Normalizer
Normalize line endings to LF, strip trailing whitespace and collapse trailing blank lines
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XML Formatter
Beautify XML with proper indentation and structure for better readability and debugging
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XML Minifier
Minify XML by removing whitespace and line breaks to create compact output
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YAML Formatter
Format and validate YAML configuration files with proper indentation and structure
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Base32 Decoder
Decode Base32 encoded strings back to plain text
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Base32 Encoder
Encode text using RFC 4648 Base32 encoding
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Base45 Encoder / Decoder
RFC 9285 Base45 encode & decode, as used in EU COVID QR certificates
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Base58 Encoder / Decoder
Bitcoin-alphabet Base58 encode & decode with leading-zero support
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Base62 Encoder / Decoder
Compact 0-9A-Za-z Base62 encode & decode, ideal for short IDs and URLs
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Base64 ↔ Hex Converter
Convert Base64 directly to hexadecimal and back without leaving your browser
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Base64 Decoder
Decode Base64 strings back to plain text or binary
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Base64 Encoder
Encode text or files to Base64 string format
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Base64URL Encoder / Decoder
URL-safe Base64 (-_ instead of +/, no padding) encode & decode
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Case Converter (Dev)
Convert identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, Title and Sentence case.
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CommonJS ⇄ ESM Converter
Convert CommonJS require and module.exports to ES module import/export syntax and back for the common static patterns
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CSV to Markdown Table
Convert CSV data into a clean, aligned GitHub-flavored Markdown table with a header row
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cURL Builder
Build cURL command from form.
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cURL to Code
Convert cURL to JS/Python/PHP/Go.
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ES6 to ES5 Converter
Convert modern ES6+ arrow functions and syntax to ES5-compatible JavaScript for legacy browsers
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Hex Dump Viewer
View text as a hexdump -C style offset, hex and ASCII dump
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HTML Entities Decoder
Decode HTML entities back to their plain text form
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HTML Entities Encoder
Encode special characters to HTML entity references
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HTML Entities Ref
Search HTML entities quickly.
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HTML Preview
Preview how HTML code renders in browser with live sandbox iframe visualization
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HTML Table to CSV
Convert pasted HTML table markup into CSV and JSON. Parses rows and cells, auto-escaping commas, quotes and newlines
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HTML to JSX
Convert plain HTML to React JSX syntax with className, camelCase attributes, and proper structure
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HTML to Markdown
Convert HTML markup to clean Markdown syntax for documentation and content editing
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HTML to Text
Strip all HTML tags and extract plain text content only from HTML markup
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JS Regex Escaper
Escape a literal string so its special characters are matched literally inside a RegExp, with optional forward-slash escaping
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JS to TypeScript
Add TypeScript type annotations to JavaScript functions for better type safety and IDE support
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JS Unicode Escaper
Escape non-ASCII characters to \\uXXXX sequences so source stays ASCII-safe, or decode \\uXXXX, \\u{...} and \\xXX back to text
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JWT Decoder
Decode & inspect JWT tokens (header, payload, signature)
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Markdown to HTML
Convert Markdown syntax to proper semantic HTML markup with formatting preserved
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Numeric HTML Entities
Encode text to decimal/hex numeric HTML entities (&#NN;) and decode them back
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Punycode / IDN Converter
RFC 3492 Punycode encode & decode for internationalized domain names (xn--)
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String Escaper
Escape/unescape for JSON, JS, HTML, SQL, Regex and Shell.
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Template Literal → Concat
Convert ES6 template literals with ${expr} interpolation into equivalent string concatenation, string and regex aware
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Ternary to If/Else
Expand ternary assignments, declarations and returns into readable if/else blocks, safely skipping ?? and ?. operators
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Text to Hex
Convert text to hexadecimal (base 16) encoding
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TSV to CSV
Convert tab-separated values to CSV with proper quoting for fields containing commas or quotes
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Unicode Decoder
Decode Unicode escape sequences back to text
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Unicode Encoder
Encode text to Unicode code points (\\u escape format)
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URL Decoder
Decode percent-encoded URLs back to readable text
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URL Encode All Characters
Percent-encode every character as %XX — full-escape any string for URLs
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URL Encoder
Percent-encode special characters for safe URL usage
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URL Encoder / Decoder
Percent-encode or decode text for URLs using encodeURIComponent or encodeURI, in both full-string and component modes.
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URL Parser
Parse full URL structure.
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Uuencode / Uudecode
Classic Unix uuencode & uudecode with begin/end wrapper for text payloads
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var to let / const
Replace the var keyword with let or const across your code, string, comment and regex aware so text like \
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XML Encoder / Decoder
Encode and decode XML special characters safely
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XXencode / XXdecode
XXencode & XXdecode using the portable +-0-9A-Za-z alphabet
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.env Example Generator
Generate .env.example templates from variable names with clean placeholder values.
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.htaccess Generator
Generate Apache .htaccess with redirects, caching directives, and security headers.
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.htpasswd Generator
Generate real bcrypt or SHA-1 .htpasswd entries for Apache and nginx basic auth.
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Babel Config Generator
Generate babel.config.json with preset-env, preset-react, and preset-typescript selections.
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Basic Auth Generator
Build an HTTP Basic Authorization header from user/pass.
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Browserslist Generator
Generate browserslist config for modern, broad, and legacy browser support targets.
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Changelog Generator
Generate structured CHANGELOG.md entries from version and bullet point release notes.
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CODEOWNERS Generator
Generate a GitHub CODEOWNERS file from path patterns and owners with automatic @ prefixing.
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Commitlint Config Generator
Generate commitlint.config.js with conventional commit rules and a custom allowed type list.
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CONTRIBUTING.md Generator
Generate a CONTRIBUTING.md guide with setup, branch, commit, and pull request instructions.
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Conventional Commit Generator
Generate conventional commit messages from type, scope, and description in proper format.
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Cron Generator
Build cron from schedule dropdowns.
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CSP Header Generator
Generate Content-Security-Policy header values with practical default web directives.
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CSS Clamp Generator
Generate a fluid CSS clamp() for responsive typography or spacing that scales linearly between two viewport widths.
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CSS Reset Generator
Generate minimal, normalize-style, or modern CSS reset code blocks for projects.
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CSS Variables Generator
Generate CSS custom properties from palette and spacing scale for design systems.
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Data URI Generator
Convert text, SVG, CSS or HTML into a data: URI (base64 or URL-encoded)
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Dependabot Config Generator
Generate dependabot.yml v2 for npm, pip, Docker, and GitHub Actions with update schedules.
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Docker Compose Generator
Generate docker-compose.yml with web, database, redis, and nginx service presets.
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Dockerfile Generator
Generate optimized Dockerfiles for Node.js, Python, and static web deployments.
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EditorConfig Generator
Generate .editorconfig with indentation, charset, line endings, and whitespace trimming.
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ESLint Config Generator
Generate .eslintrc.json for React, TypeScript, Airbnb, and Next.js setups.
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FAQ Schema Generator
Generate valid FAQPage JSON-LD structured data online from your questions and answers for Google rich results.
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FUNDING.yml Generator
Generate a GitHub Sponsors FUNDING.yml with GitHub, Patreon, Ko-fi, Open Collective, and custom links.
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GitHub Actions Generator
Generate CI workflow YAML for Node, Python, or Docker pipelines with branch settings.
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GitHub Profile README Generator
Generate a GitHub profile README with badges, stats widgets, skills, and social links.
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Gitignore Generator
Generate combined .gitignore files by selecting multiple tech stacks and export ready-to-use ignore rules.
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Hash Generator Advanced
MD5/SHA1/SHA256/SHA512 side-by-side.
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HMAC Generator
Compute HMAC message authentication codes with SHA-1, SHA-256, SHA-384 or SHA-512 and a secret key, in hex or base64.
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HTML Blockquote Generator
Generate a semantic blockquote with an optional cite URL and a figcaption author attribution for quotes and testimonials
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HTML Button Generator
Generate styled HTML button code with classes, attributes, and event handlers
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HTML Figure & Caption Generator
Generate a semantic figure element wrapping an image with a figcaption, ideal for accessible captioned images and diagrams
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HTML Form Generator
Build a complete HTML form with method, action, labelled input fields, textarea, select and a submit button from a simple field list
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HTML Input Generator
Generate form input fields with labels, types, validation, and accessibility attributes
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HTML Link Generator
Generate anchor tag with href, target, rel, title and all link attributes configured
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HTML List Generator
Generate ordered or unordered HTML lists from text input with proper markup structure
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HTML Nav Menu Generator
Build an accessible nav menu of anchor links from label|url lines, wrapped in nav and an unordered list for site navigation
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HTML Select Dropdown Generator
Generate a select dropdown with option tags from one line per option, supporting value|label pairs, a name and multiple attribute
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HTML Table Generator
Generate semantic HTML tables from rows and columns input with customizable styling
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HTML5 Boilerplate Generator
Generate a complete HTML5 starter document with meta, Open Graph, Twitter cards, favicons and an optional CSS reset
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iFrame Generator
Generate iframe embed code with src, width, height, sandbox, and all iframe options
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Issue Template Generator
Generate GitHub bug report or feature request issue templates in Markdown format.
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Jest Config Generator
Generate jest.config.js with test environment, ts-jest preset, and coverage collection options.
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JWT Generator (HS256)
Sign a JSON Web Token with HMAC-SHA256 from your header, payload and secret — output verifiable against jwt.io.
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License Generator
Generate LICENSE text for MIT, Apache 2.0, GPL v3, BSD, and ISC with ownership placeholders.
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Makefile Generator
Generate a tab-indented Makefile from target and command pairs with an automatic .PHONY line.
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Media Query Generator
Generate responsive CSS media query templates for common breakpoint systems.
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Meta Tag Generator
Generate complete SEO meta tags including title, description, Open Graph, and Twitter Cards
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Nginx Config Generator
Generate nginx.conf for reverse proxy, static hosting, and SSL redirect scenarios.
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Open Graph Generator
Generate Open Graph and Twitter Card meta tags for social media sharing optimization
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OpenAPI Generator
Generate OpenAPI 3.0 YAML skeleton from endpoint definitions for quick API docs.
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Procfile Generator
Generate a Heroku/Foreman Procfile from process type and command pairs for web and worker dynos.
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Pull Request Template Generator
Generate a GitHub pull request template with summary, change type checklist, and review checklist.
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Query String Builder
Build and encode query strings.
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README Generator
Generate a complete Markdown README.md from project details, commands, stack, and license inputs.
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Responsive Image Srcset Generator
Generate responsive img srcset and picture markup from a filename pattern, width list, sizes attribute and alt text
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Robots.txt Generator
Generate robots.txt with allow/disallow directives and sitemap references for major bots.
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SECURITY.md Generator
Generate a SECURITY.md policy with supported versions, contact email, and disclosure guidelines.
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Stylelint Config Generator
Generate .stylelintrc.json extending standard, SCSS, and Prettier compatibility configs.
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Tailwind Config Generator
Generate tailwind.config.js with custom color palettes, fonts, screens, and plugins.
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tsconfig Generator
Generate tsconfig.json for strict, web, node, react, and next presets.
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UUID v5 Generator
Generate deterministic RFC 4122 v5 UUIDs by SHA-1 hashing a name within a namespace (DNS, URL, OID, X.500 or custom).
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Vite Config Generator
Generate vite.config.js for React, Vue, or vanilla projects with a custom dev server port.
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XML Sitemap Generator
Generate XML sitemap from URL lists with priority and changefreq controls.
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Code Diff Viewer
Compare two code snippets and highlight differences with additions and deletions
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Console.log Remover
Strip console.log, warn, error, info and debug statements from JavaScript without touching strings, comments or regex
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Cron Parser
Explain cron and next 10 run times.
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Crontab Guru
Visual cron builder + readable output.
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Diff Checker
Line-by-line visual differences.
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HTML Tag Counter
Count how many of each HTML tag exists in your code with detailed statistics breakdown
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HTML Validator
Validate HTML structure, find syntax errors, unclosed tags, and invalid attributes instantly
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JavaScript Validator
Validate JavaScript syntax and find errors with detailed line numbers and error messages
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JS Console Simulator
Simulate JavaScript console.log output for code snippets and preview execution results
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JS Variable Name Validator
Check whether a name is a valid JavaScript identifier and explain each problem — digits, symbols, spaces or reserved keywords
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JWT Debugger
Decode JWT segments and verify.
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Line Counter
Count lines of code, blank lines, comment lines, and character statistics
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Regex Cheatsheet
Regex patterns with live test.
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Regex Tester Advanced
Flags, groups, replace, cheat sheet.
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Timestamp Diff
Compute the difference between two dates or Unix timestamps in days, hours, minutes, seconds and a humanized string.
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User-Agent Parser
Extract browser/OS/device/engine.
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UUID Inspector
Detect UUID version, variant and embedded timestamp.
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ASCII Table
0-127 searchable ASCII reference.
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Color Names Ref
CSS named colors palette.
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CSS Units Ref
All CSS units with preview.
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Git Cheatsheet
Interactive Git command guide.
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HTML Color Code Generator
Generate HTML color code snippets in hex, RGB, RGBA, and HSL formats with examples
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HTTP Headers Ref
Common request/response headers.
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HTTP Status Codes
Searchable HTTP code reference.
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Linux Commands Ref
Search Linux commands + examples.
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MIME Types
Extension — MIME lookup.
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Quoted-Printable Encoder
Encode text using MIME quoted-printable encoding for email
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Ascii85 Encoder / Decoder
Adobe Ascii85 (base85) encode & decode with z shortcut and <~ ~> delimiters
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Atbash Cipher
Encode text using the Atbash mirror substitution cipher
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Bytes Humanizer
Turn raw byte counts into human-readable sizes in KiB/MiB (binary) or KB/MB (decimal), and parse sizes back to bytes.
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Caesar Cipher
Encode or decode text with the classic Caesar shift cipher
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Chmod Calculator
Symbolic — octal permission grid.
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CIDR Calculator
Network range, netmask, hosts.
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Duration Humanizer
Convert milliseconds or seconds into a readable duration like 1d 2h 3m 4s, and break it down across every time unit.
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HTML Attribute Extractor
Extract all attributes from specific HTML elements and list their names and values
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HTML Attribute Remover
Strip every attribute from all HTML tags at once, leaving only bare element names, or remove only a named attribute like class or style
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HTML Audio Tag Generator
Generate an HTML5 audio element with controls, autoplay, loop, muted, preload and multiple MP3/OGG/WAV source fallbacks
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HTML Character Entity Finder
Scan text for special and non-ASCII characters and list their named, decimal and hexadecimal HTML entity codes for safe encoding
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HTML Cleaner
Strip unwanted tags, inline styles, Word HTML junk, and clean up messy code automatically
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HTML Comment Remover
Remove all HTML comments from code including multi-line and conditional comments
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HTML Definition List Generator
Turn term: definition lines into a semantic dl with dt and dd elements for glossaries, metadata and FAQ-style content
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HTML Details Accordion Generator
Generate native details/summary accordion markup from title and content blocks, with an optional open-by-default first item
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HTML Image Tag Generator
Generate img tag with src, alt, width, height, srcset, loading and all image attributes
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HTML Video Tag Generator
Generate an HTML5 video tag with controls, poster, autoplay, loop, muted and multiple source formats plus a caption track
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HTML5 Semantic Layout Generator
Generate a semantic HTML5 page skeleton with header, nav, main, article, aside, section and footer landmark elements
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IP Info
IPv4/IPv6 class/type/binary info.
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JavaScript Obfuscator
Basic JavaScript obfuscation with variable renaming and string encoding to protect code
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JS Comment Remover
Remove line and block comments from JavaScript while preserving URLs and comment syntax inside strings, with optional JSDoc keep
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JS Quote Normalizer
Convert JavaScript string quotes between single and double, string, comment and regex aware, re-escaping quotes as needed
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List to JS Array
Turn a list of lines, comma or space separated values into a JavaScript array literal with quoting, trimming and de-duplication
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Lorem Ipsum Advanced
Words/sentences/paragraphs generator.
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Meta Tags Advanced
SEO + OG + Twitter meta generator.
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Newline to BR Converter
Convert plain-text line breaks into HTML <br> tags (nl2br), with an optional XHTML self-closing mode and a reverse br-to-newline mode
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ROT18 Cipher
ROT13 for letters plus ROT5 for digits — symmetric encode & decode
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ROT47 Cipher
ROT47 rotate all printable ASCII by 47 — symmetric encode & decode
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Semver Tools
Validate, compare and range-check semantic versions.
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Slugify
Convert any text into a clean URL slug — strips accents, lowercases and joins words with a custom separator.
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Text/SVG to Data URI
Encode text, SVG or CSS into a base64 or URL-encoded data URI you can embed inline in HTML or CSS with no external file
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Timezone Dev
Major timezone clock table.
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Unicode Character Lookup
Look up any Unicode character by code point or name
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Unix Timestamp
Unix — human date + live now.
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Vigenère Cipher
Encrypt or decrypt text using the Vigenère polyalphabetic cipher
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Z85 Encoder / Decoder
ZeroMQ Z85 (RFC 32) base85 encode & decode for 4-byte-aligned binary data
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About Developer Studio
Developer Studio is the largest part of ToolsRift, with 266 tools across seven categories. Paste a payload into the JSON Formatter and get the exact line and column of any syntax error. Decode a token with the JWT Debugger, test a pattern with the Regex Tester, read a schedule with the Cron Parser, or compare two files with the Diff Checker. Generators write starter files such as a .gitignore, Dockerfile, GitHub Actions workflow or tsconfig, and the JSON to TypeScript converter infers types from every item in an array, not only the first.
None of this needs a server. Formatting, parsing and decoding run as JavaScript in your browser, so API keys, tokens and customer data you paste stay on your machine. The IP Info tool, for example, analyses an address locally and makes no lookup request. Libraries such as Prettier and sql-formatter load only when a tool needs them. Generated YAML and JSON files are checked by automated tests that parse every output, and formatters say plainly when a language has no full formatter and only basic re-indenting is applied.
Frequently asked questions
Is it safe to paste a production JWT or API key?
Which languages can the formatters handle?
Does the cron parser support seconds?
Can I use the generated config files in commercial projects?
Why does the JSON validator warn about large numbers?
Other studios
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- Image StudioResize, compress, convert and clean up images privately.
- Media StudioTrim, convert and record video and audio in the browser.
- Money StudioLoans, savings, tax and seller fees, with the maths shown.
- Health StudioCalories, BMI, heart-rate zones and sleep, explained.
- Calc & Convert StudioMaths, units, dates and everyday sums, exact to the digit.
- Design StudioColours, gradients, CSS and SVG you can copy straight in.
- Writing StudioCount, clean, transform and draft text without distractions.
- Office & Business StudioInvoices, documents, charts and policies, tidy and fast.
- Study StudioFlashcards, citations, quizzes and revision timers.
- Security StudioPasswords, hashes and ciphers generated on your device.
- Fun StudioWheels, dice, pickers and fancy text for when chance decides.