About Audio Tools

Trim, convert, record and generate audio — entirely inside your browser

Working with audio usually means downloading a heavyweight editor or uploading your file to a stranger's server and hoping it gets deleted afterwards. Neither is necessary for the everyday jobs: cutting an intro off a recording, converting a voice memo to MP3, making a ringtone, evening out volume across clips, or turning a script into spoken audio. ToolsRift's audio tools do all of that using the Web Audio API and MediaRecorder that are already built into your browser.

That architecture has one very practical consequence: your audio never leaves your device. There is no upload step, no queue, and no file-size limit imposed by a server — the only limit is your own machine's memory. A lecture recording, a client interview, a voice note containing personal details, or an unreleased track can all be processed here without ever being transmitted anywhere.

The collection covers the tasks people search for most: an audio trimmer and cutter, a format converter, a merger, volume normalization and fades, speed and pitch adjustment, silence removal, a voice recorder, text-to-speech, waveform and BPM analysis, and generators for tones and white, pink and brown noise.

Why ToolsRift

Why our audio tools are different

Most free online audio tools are thin wrappers around a server: you upload, you wait in a queue, you download a watermarked or length-capped result, and you have no idea how long your file is retained. Several impose a five-minute cap or require an account before you can export anything at all. ToolsRift has none of those steps because there is no server in the loop — processing starts the moment you pick a file and finishes at the speed of your own hardware.

Everything is free with no daily quota, no export limits and no sign-up. Because the tools use standard browser APIs rather than a large WebAssembly bundle, they load in about a second even on a mobile connection, and they keep working offline once the page has loaded.

How It Works

How to use audio tools

1
Choose your audio tool
Open the Audio Tools dashboard and pick the job you need — trim, convert, merge, normalize, record, text-to-speech, or one of the analysis and generator tools.
2
Load your file (or record one)
Select an audio file from your device, or drag and drop it onto the page. Recording tools ask your browser for microphone permission instead, which you can revoke at any time.
3
Adjust and preview
Set your trim points, output format, volume target or speed, then preview the result before exporting. Nothing is committed until you export, so you can experiment freely.
4
Export and download
Download the processed audio straight to your device. The file is generated locally in your browser, so the download is instant with no upload or waiting.
Use Cases

Who uses audio tools?

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

›Podcasters trimming dead air from the start and end of an episode
›Students converting a lecture recording to MP3 to save space
›Musicians checking the BPM of a reference track
›Anyone making a custom ringtone from a favourite song
›Teachers turning written material into spoken audio for accessibility
›Video editors extracting and normalizing audio before a mix
›Sound engineers generating test tones and pink noise for room calibration
FAQ

Frequently Asked Questions

Answers to common questions about our audio tools.

Is my audio uploaded to a server?+
No. Every audio tool here runs entirely in your browser using the Web Audio API and MediaRecorder. Your file is read locally, processed locally and exported locally — it is never transmitted, and you can confirm this yourself in your browser's network tab.
What audio formats are supported?+
You can open any format your browser can decode, which in practice covers MP3, WAV, OGG, M4A/AAC, FLAC and WebM. Export options depend on what your browser can encode — WAV is always available, and most modern browsers also support WebM and OGG.
Is there a file size or length limit?+
There is no limit imposed by us because nothing is uploaded. The practical ceiling is your device's available memory, so very long files (over an hour) may be slow on an older phone but are usually fine on a desktop.
Does the voice recorder need permission?+
Yes. Your browser will ask for microphone access the first time you use a recording tool, and the recording stays on your device. You can revoke that permission at any time in your browser settings, and nothing is captured while the recorder is stopped.
Do these tools work offline?+
Largely yes. Once the page has loaded, the trimming, conversion, analysis and generator tools keep working without a connection because all the processing code is already in your browser.
Explore More

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