This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
8 free audio tools that run in your browser: convert (video to MP3 too), trim, join, boost, slow down, compress, text to speech and on-device Whisper transcription. No upload, no account, no limits. Open source (MIT), so the no-upload claim is checkable.
It started with a small annoyance. Every time I needed to cut a voice memo or pull the sound out of a video, the top search results wanted me to upload the file to their server, wait in a queue, and sometimes sign up. For a 30-second clip that felt silly, and for an interview or a voice message from family it felt like a privacy problem.
So I built tools that do the work on your own device:
• Converter — audio and video (MP4, MOV, MKV) to MP3, M4A, WAV or FLAC. Large files stream; several files come back as one ZIP
• Trimmer, Joiner, Volume Booster, Speed Changer (slow a song down to learn it), Compressor
• Voice to Text — Private mode runs Whisper in the browser, so the recording is never sent anywhere
• Text to Speech with your browser's voices
• A small helper on the homepage: describe the task ("make this mp3 smaller", "slow down to 0.75") and it opens the right tool with the settings filled in
Under the hood: Web Audio API, WebAssembly and WebCodecs (via Mediabunny), Transformers.js for Whisper. Most tools keep working offline once the page is loaded. The code is MIT on GitHub, and the About page shows how to confirm in DevTools that nothing gets uploaded.
What it doesn't do yet: no mixing or overlaying tracks, no noise removal, and long transcriptions can be slow on older phones.
No ads, no paywall — it's a side project I keep improving.
One question for you: which audio task do you still end up uploading files for? That's what I'd like to build next.
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About AudioTools.dev on Product Hunt
“Audio tools that never upload your files”
AudioTools.dev was submitted on Product Hunt and earned 1 upvotes and 1 comments, placing #147 on the daily leaderboard. 8 free audio tools that run in your browser: convert (video to MP3 too), trim, join, boost, slow down, compress, text to speech and on-device Whisper transcription. No upload, no account, no limits. Open source (MIT), so the no-upload claim is checkable.
AudioTools.dev was featured in Open Source (69.1k followers), Privacy (11.5k followers), GitHub (41.5k followers) and Audio (2.2k followers) on Product Hunt. Together, these topics include over 69.5k products, making this a competitive space to launch in.
Who hunted AudioTools.dev?
AudioTools.dev was hunted by Roman. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Roman
Hi Product Hunt 👋 I'm Roman, I build AudioTools.dev.
It started with a small annoyance. Every time I needed to cut a voice memo or pull the sound out of a video, the top search results wanted me to upload the file to their server, wait in a queue, and sometimes sign up. For a 30-second clip that felt silly, and for an interview or a voice message from family it felt like a privacy problem.
So I built tools that do the work on your own device:
• Converter — audio and video (MP4, MOV, MKV) to MP3, M4A, WAV or FLAC. Large files stream; several files come back as one ZIP
• Trimmer, Joiner, Volume Booster, Speed Changer (slow a song down to learn it), Compressor
• Voice to Text — Private mode runs Whisper in the browser, so the recording is never sent anywhere
• Text to Speech with your browser's voices
• A small helper on the homepage: describe the task ("make this mp3 smaller", "slow down to 0.75") and it opens the right tool with the settings filled in
Under the hood: Web Audio API, WebAssembly and WebCodecs (via Mediabunny), Transformers.js for Whisper. Most tools keep working offline once the page is loaded. The code is MIT on GitHub, and the About page shows how to confirm in DevTools that nothing gets uploaded.
What it doesn't do yet: no mixing or overlaying tracks, no noise removal, and long transcriptions can be slow on older phones.
No ads, no paywall — it's a side project I keep improving.
One question for you: which audio task do you still end up uploading files for? That's what I'd like to build next.