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NJHTools

Video to GIF Converter

Convert any video clip to an animated GIF — entirely in your browser. No upload, no server.

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Drop a video or click to choose

MP4 · WebM · MOV · AVI · MKV

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100% Private

Your video never leaves your device. All processing runs in your browser.

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High Quality

Two-pass palette optimisation for vivid colours and small file sizes.

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No Install

FFmpeg runs in WebAssembly — no plugins or software needed.

Frequently Asked Questions

Is the video uploaded to a server?↓

No. The conversion runs entirely in your browser using FFmpeg compiled to WebAssembly. Your video never leaves your device.

What video formats are supported?↓

Most common video formats work: MP4 (H.264/H.265), WebM (VP8/VP9), MOV, AVI, MKV, and more. If your browser can play the file, FFmpeg can convert it.

Why does conversion take a while?↓

FFmpeg is a full video encoder running inside your browser via WebAssembly, without access to hardware acceleration. A 5-second clip typically converts in 10–30 seconds.

How do I make the GIF file smaller?↓

Lower the FPS (fewer frames per second), reduce the output width, or shorten the clip duration. These three settings have the biggest impact on GIF file size.

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