About JavaScript Tools

Format, minify, validate and obfuscate JavaScript in your browser

JavaScript is everywhere — in browsers, on servers, in build pipelines, in serverless functions. And the daily work of dealing with JS code means formatting, minifying, validating, sometimes obfuscating, and frequently converting between different code shapes. ToolsRift offers 10+ JavaScript tools that handle these tasks completely in your browser, without ever uploading your code (which often contains API keys, internal logic, or proprietary algorithms) to a remote server.

The tools cover the most common needs: a fast Prettier-compatible formatter with configurable options, a Terser-grade minifier with safe and aggressive modes, an ESLint-lite syntax validator with line-level error reporting, an obfuscator for shipping front-end code, JSON-to-JS-object converter, JS-to-TypeScript (basic conversion), JSON to TypeScript types, and several other utilities.

All tools work on modern ES2024+ syntax including optional chaining, nullish coalescing, top-level await and static class blocks.

Why ToolsRift

Why our javascript tools are different

Most online JS tools are thin wrappers around server-side npm packages. That is a real concern when your code contains anything sensitive: API keys, internal endpoints, proprietary algorithms, or just unreleased product features. ToolsRift runs every JS tool entirely in your browser. The formatter, minifier and obfuscator are the actual npm packages compiled to WebAssembly or bundled for browser use — same output, but your code stays on your machine.

We also keep the tools current. JavaScript syntax evolves quickly; our formatter and validator are updated to support the latest TC39 stage-4 features as soon as browsers ship them. You will never see a confusing "unexpected token" error on perfectly valid modern code.

How It Works

How to use javascript tools

1
Open the JS tool
Pick formatter, minifier, validator, obfuscator or converter from the dashboard.
2
Paste your code
Drop JS into the input editor. Syntax highlighting works on input so you can spot obvious issues before processing.
3
Configure options
Formatter: indent, semicolons, single/double quotes, line width. Minifier: drop comments, mangle names, preserve license comments. Obfuscator: rename, string-encode, control-flow flatten.
4
Copy or download
Output appears in the right pane with syntax highlighting. Click copy or download as a .js file. Source map output is available for the minifier.
Use Cases

Who uses javascript tools?

From everyday tasks to professional workflows — here are some of the most common ways people use these tools.

›Developers formatting code before committing to a shared repository
›Build engineers minifying JS for production deploys
›Front-end developers obfuscating client-side logic to deter casual reverse-engineering
›Code reviewers validating syntax of pasted snippets
›Students learning JavaScript by seeing how minifiers transform their code
›Library authors testing how their code holds up under minification
›DevTools tinkerers converting one-liners into readable, indented form
FAQ

Frequently Asked Questions

Answers to common questions about our javascript tools.

Is the formatter the same as Prettier?+
The formatter uses the actual Prettier WASM build, so output is byte-identical to what Prettier in your IDE would produce. All Prettier options are exposed: indent width, semicolons, quote style, trailing commas, and more.
Can I really minify large bundles in the browser?+
Yes. Terser runs as WebAssembly and can minify multi-megabyte JS bundles in seconds. For very large bundles (10MB+), processing may take 10-30 seconds. Source map output is available so debugging the minified code remains practical.
What does the obfuscator actually do?+
It renames identifiers to meaningless names, encodes string literals (so secrets are not visible in plain text in the bundle), and optionally flattens control flow to make decompilation harder. It is not unbreakable — a determined attacker can always reverse-engineer client-side code — but it raises the bar significantly.
Does the validator catch runtime errors?+
No — it is a static syntax checker, like the parser inside ESLint. It catches missing semicolons, unbalanced braces, invalid identifiers and similar parse errors. Runtime errors (undefined variables, type mismatches) require actually running the code.
Why is my modern JS shown as an error?+
If you are using bleeding-edge proposals (stage-1/2/3) that have not shipped in browsers yet, the parser may not recognize them. Stage-4 features are fully supported. For experimental syntax, consider using Babel first.
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