New — WASM video engine, no uploads

Video Converter

Browser-based video converter for MP4, WebM, and GIF. Tune CRF, resolution, and FPS, mute audio, and download without sending frames to a server.

Privacy-first: stays localPowered by a WASM video engineOne-time load, then fast

Private — runs in your browser

WASM video engine, one-time load

First conversion downloads the engine (about 30 MB)

Drop a video or click to browseConvert locally to MP4, WEBM, or GIF. Ideal for presentations, social media, and previews.Choose video

Output format

Use H.264 MP4 for universal playback, VP9 WEBM for lean embeds, or GIF for quick loops.

CRF and compression (lower means sharper)23

Try 23 for balanced output. Increase the number to shrink the file.

Output tuning

Resolution

Frame rate30 fps

Use 24–30 fps for most exports. Higher FPS smooths motion but increases file size.

Mute audio track

The first run downloads the WASM engine (about 30 MB). Later conversions stay on your device and run faster.

Quick recipes

Pitch decks: MP4, 720p, CRF 23–25; mute if narration is not needed.
Landing pages: WEBM, 720p, CRF 30–32, and 24 fps to reduce file size.
Looping previews: GIF, 480p, and 10–14 fps to keep size under control.

Built for browser-native conversions

The converter uses a WebAssembly video engine, so you can compress or re-encode assets for presentations, social media, or clients without uploading source footage. The engine downloads once and stays cached in this tab.

Pick MP4/H.264, WEBM/VP9, or GIF loops with one click.
Control CRF, resolution, and frame rate to hit a target size.
Mute or keep audio, and optimize for presentations, landing pages, or previews.
All processing stays local—ideal for sensitive or client material.

Need audio-only exports? Use the Audio Converter for MP3, WAV, FLAC, or OGG.

Practical presets that work

Pitch decks: MP4, 720p, CRF 23–25; mute if narration is not needed.
Landing pages: WEBM, 720p, CRF 30–32, and 24 fps for lighter hero loops.
GIF previews: 480p and 10–14 fps to keep loops small but readable.
Retain detail: keep 1080p and lower CRF (18–22) for portfolio reels.

Preload the engine before a batch of conversions. The warm cache keeps turnaround quick, even offline.

Frequently asked questions

Are my videos uploaded anywhere?

No. The conversion engine runs as WebAssembly inside your browser, so your videos stay on your device.

Which formats can I export?

MP4 (H.264 + AAC), WEBM (VP9 + Opus), and GIF loops. More containers may be added as the WASM build grows.

Can I adjust quality and size?

Yes. Adjust CRF, resolution, frame rate, and muting to reach the size you need without leaving the page.

Does it work offline after loading?

Once the engine is cached (about 30 MB the first time), conversions run offline in this tab.