Which input formats can I convert to GIF?

MP4, MOV, WebM, MKV, AVI, MPEG, 3GP and OGV. vexo's GIF encoder works with any video format the input pipeline accepts.

Should I use GIF or a video?

Use GIF only when the destination cannot embed a video — email, some Slack workflows, some forum software. Everywhere else MP4 or WebM is dramatically smaller at the same visual quality.

Is this video converter free?

Yes. vexo is free to use, no account is required, and there are no paid plans.

Are my videos uploaded to a server?

No. vexo runs entirely in your browser using ffmpeg compiled to WebAssembly. Your videos are never uploaded, never seen by our infrastructure, and never stored anywhere outside your device. When you close the tab, every file is gone.

Which formats are supported?

Inputs: MP4, MOV, WebM, MKV, AVI, MPEG, 3GP, OGV and GIF. Outputs: MP4 (H.264 + AAC), WebM (VP9 + Opus) and animated GIF.

Why does the first conversion take a moment?

The first time you convert a video, vexo downloads the conversion engine (about 25 MB). After that it stays in your browser cache, and subsequent conversions start immediately.

Is there a file size limit?

Yes. Each file may be up to 200 MB. Browser memory is the real ceiling — very large 4K clips may struggle on lower-end devices.

Can I trim or resize the video?

Yes. You can set a start/end time to trim and pick a target width (1080p, 720p, 480p, 360p or original).

How long does a conversion take?

Depends on the video. A 1-minute 1080p MP4 typically converts in 1–3 minutes on a modern laptop. Mobile is slower. The progress bar shows real-time progress.

Why is my converted file bigger than the original?

If you raise the quality slider above the source's encoder settings, the output can grow. Lower the slider toward 50–70 for noticeable shrink, or trim/resize to drop the bitrate further.

Can I convert multiple videos at once?

Not yet. Video encoding is memory-heavy, so vexo converts one file at a time. Batch support may come later.

Are ads required to use the tool?

No. Ads are isolated from the converter. The tool works completely even if ads fail to load or are blocked.

Video → GIF

Convert video to GIF

GIFs are perfect for short reactions, looping demos and embeds where audio isn't needed. Drop a video below and vexo extracts a GIF in your browser. Use the trim and resize controls to keep the file small.

Drop your video here

or choose a file from your device

Choose video

MP4

MOV

WebM

MKV

AVI

GIF

Max 200 MB per file. Conversion runs in your browser.

Every conversion runs entirely in your browser. Your video never leaves your device.

About Video → GIF

How long should my GIF be?

Keep GIFs under 10 seconds and under 480 px wide. GIFs are uncompressed by modern standards — a 30-second 1080p GIF can easily exceed 50 MB. The trim and resize controls help you stay reasonable.

Why is the GIF blurry?

GIF only supports 256 colors per frame, so gradients and skin tones look posterized. For better fidelity at similar size, consider WebM or MP4 — modern browsers play them inline like GIFs.

What about audio?

GIFs can't carry sound. vexo drops the audio track automatically when converting to GIF.

Each link below opens the converter pre-tuned for that conversion.

Supported formats

MP4 is the safest default for web and mobile playback. WebM gives the smallest files for modern browsers. GIF is for short, soundless animations.

WMV, FLV and other legacy/streaming formats are not supported in this version. Please convert those to MP4 first using a desktop tool.

Format	Input	Output	Notes
MP4	Yes	Yes	H.264 + AAC, broadest compatibility
MOV	Yes	No	Apple/QuickTime container; convert to MP4
WebM	Yes	Yes	VP9 + Opus, smaller than MP4
MKV	Yes	No	Container; convert to MP4 or WebM
AVI	Yes	No	Legacy container; convert to MP4
GIF	Yes	Yes	No audio, short clips only
WMV	No	No	Not supported
FLV	No	No	Not supported

Frequently asked questions

Your videos never leave your device

vexo is a static page. Every conversion runs inside your browser via ffmpeg compiled to WebAssembly. There is no server-side processing, no upload, no temporary file, no cache. When you close this tab, every file is gone.

No account required.
No server processing. Your videos stay on your device.
No caching, no Service Worker, no IndexedDB persistence.
The conversion engine (ffmpeg-wasm) is fetched from a public CDN and cached by the browser; no personal data is sent.