Tapirconvert
Free video converter with no limits, no watermark, no signup
Tapirconvert is a free, browser-based video toolkit: convert between MP4, MOV, AVI, MKV and WEBM, extract MP3 audio, compress large files, or upscale footage to 4K with AI — all processed client-side via WebAssembly, nothing uploaded to a server. No file size limit, no daily quota, no watermark, no account required.
Features
- Converts any video format (MP4, MOV, AVI, MKV, WEBM) straight to MP4 or MP3 in one step
- AI-powered video upscaler — turn 1080p into true 4K, or sharpen old low-res footage
- Dedicated exact-format converters (MOV/AVI/MKV/WEBM → MP4, and MP4 → MOV/AVI/MKV/WEBM)
- Video compressor with adjustable quality levels
- 100% client-side processing — files never leave your device
- No signup, no watermark, no file size limit, no daily cap
- Completely free, ad-supported (no paid tier)
- Available in 8 languages (EN, ES, PT-BR, JA, RU, TR, ID, ZH-TW)
Use Cases
- Extract MP3 audio from a video (interview, lecture, podcast clip)
- Convert an iPhone/QuickTime MOV file to MP4 so it plays anywhere
- Convert old AVI/MKV videos to MP4 for phones, TVs, or web upload
- Shrink a large video file to fit an email or upload size limit
- Prep footage for editing software (e.g. MP4 → MOV for Final Cut Pro)
- Upscale old, blurry, or low-res video (old phone footage, downloaded clips) to sharp 4K with AI
Comments
Hey! I build SEO-driven tools solo, and video conversion is one of those searches with real volume in every market — but almost zero fixed cost to serve, since ffmpeg.wasm runs everything in the visitor's own browser instead of my server. That math made it worth building. I actually made the first version for myself, then decided to clean it up and put it out publicly. Since then I've kept adding to it: it's now in 8 languages (EN, ES, PT-BR, JA, RU, TR, ID, ZH-TW), and for the AI upscaler I ended up training and exporting my own ESPCN/FSRCNN super-resolution models to ONNX, so a 4K upscale runs client-side too — no GPU server involved. It's free with no signup, no watermark, no file size cap, monetized through ads instead of a paid tier, with basically zero marginal cost per conversion, gating it behind a paywall never made sense to me. Would love feedback: which conversion or compression use case is missing for you? And does the browser-only AI upscaler feel fast enough on your machine, or does it choke on larger files?
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Comments
Hey! I build SEO-driven tools solo, and video conversion is one of those searches with real volume in every market — but almost zero fixed cost to serve, since ffmpeg.wasm runs everything in the visitor's own browser instead of my server. That math made it worth building. I actually made the first version for myself, then decided to clean it up and put it out publicly. Since then I've kept adding to it: it's now in 8 languages (EN, ES, PT-BR, JA, RU, TR, ID, ZH-TW), and for the AI upscaler I ended up training and exporting my own ESPCN/FSRCNN super-resolution models to ONNX, so a 4K upscale runs client-side too — no GPU server involved. It's free with no signup, no watermark, no file size cap, monetized through ads instead of a paid tier, with basically zero marginal cost per conversion, gating it behind a paywall never made sense to me. Would love feedback: which conversion or compression use case is missing for you? And does the browser-only AI upscaler feel fast enough on your machine, or does it choke on larger files?
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