Does my WEBM get uploaded anywhere?

No. The WEBM is decoded and the GIF is assembled in your browser. The file never leaves your device, and once the page has loaded the converter keeps working offline.

Why is the GIF larger than my WEBM?

WEBM codecs like VP9 and AV1 store mostly the difference between frames. GIF writes every frame in full as a separate palette image with no motion compression, so the same clip grows. Trim the clip, drop the frame rate, and reduce the width to keep the .gif small.

Does the audio in my WEBM carry over?

No. GIF has no audio track, so any Opus or Vorbis sound in the WEBM is dropped and only the picture frames are kept. Keep the original WEBM if you still need the audio.

Will it open WEBM files from screen recorders or browsers?

Usually yes. WEBM saved from screen recorders, browser captures, and editing tools is typically VP8 or VP9, which browsers decode natively. Whether a given file opens depends on the codec inside it and what your browser can decode.

Why does the GIF look grainy or banded next to the WEBM?

Each frame is reduced to at most 256 colors before it enters the GIF. The WEBM carried far more, so smooth gradients and shadows collapse into visible bands. That is a limit of the GIF format, not your source video.

How long a WEBM can I convert?

There is no fixed length limit, but the frames are held in memory while the GIF is built, so a long or high-resolution WEBM can run your device low on memory. Trimming with the start and end fields keeps it manageable.

WEBM to GIF

Turns a WEBM clip into an animated GIF at the frame rate and width you set. GIF maps everything to 256 colors.

What this does

A WEBM file carries video in the VP8, VP9, or AV1 codec, all of which compress motion by storing mostly the changes between frames rather than full pictures. This converter decodes that stream back into complete frames, samples them at the frame rate you choose, scales each frame to your target width, and clips the run to the start and end seconds you set. Each sampled frame is then quantized to a 256-color palette, the ceiling the GIF format allows, and the frames are written into a single looping .gif.

Turning WEBM into GIF trades away that compression. A GIF stores every frame as its own indexed-color image with no motion prediction and no audio, so the resulting .gif is usually several times larger than the WEBM it came from, and any sound in the source is left behind. Where the WEBM held thousands of shades, the 256-color cut can leave visible banding across gradients and soft shadows.

How it works

1Drop your WEBM file here or pick it from your device.
2Set the frame rate and width, and trim with the start and end seconds for a shorter clip.
3Click Create GIF, watch the looping preview, then download the .gif.

Built with open source

Mediabunny — Converts and edits video and audio in the browser via WebCodecs. Add-on encoders cover MP3, AAC, and FLAC. · MPL-2.0
gifenc — Fast GIF encoding with color quantization. · MIT

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