Why is my GIF file so large?

GIF uses an 8-bit (256 colour) palette and lossless compression. A 10-second, 480-pixel-wide GIF at 10 FPS is typically 5–20 MB. Reduce GIF size by lowering FPS, decreasing width, or shortening the clip duration.

What is the maximum GIF size recommended for web use?

Most web platforms accept GIFs up to 8 MB. For social media like Twitter/X and Slack, keep GIFs under 5 MB. For embedding in websites, aim for under 2 MB per GIF to avoid impacting page speed.

Which input formats can be converted to GIF?

ffmpeg.wasm supports MP4, WebM, MOV, AVI, MKV, and most other common video formats as input.

Is my video uploaded during conversion?

No. All conversion runs locally in your browser using ffmpeg.wasm. Nothing is sent to any server.

How do I get the best GIF quality?

Use a higher FPS (15–24) for smooth motion and a wider scale for clarity. For the best colour quality, use a short clip with limited colour variety — GIF is restricted to 256 colours per frame.

How long does GIF conversion take?

ffmpeg.wasm runs in single-threaded WebAssembly. Converting a 10-second clip at 10 FPS typically takes 10–60 seconds depending on video resolution and device speed.

Can I convert a GIF back to a video?

Yes, use the Video Converter tool to convert a GIF to MP4 or WebM. GIFs converted back to video will have the 256-colour limitation of the GIF format.

Why does my GIF look washed out or have banding?

GIF supports only 256 colours per palette. Videos with smooth gradients or many colours will show colour banding in GIF format. This is a fundamental GIF limitation. Reducing the clip length and using lower-saturation content helps.

Video to GIF Converter

Convert a video clip to an animated GIF with custom FPS and width — entirely in your browser, no upload.

100% client-side · no upload

Video file (MP4, WebM, MOV…)

Load a video file to begin.

How to convert a video to GIF

Select your video file — MP4 and WebM are best supported.
Set start and end times to select the clip segment to convert.
Choose FPS (10 is a good default; higher = smoother but larger file) and width (480px is suitable for most sharing platforms).
Click Convert to GIF and wait for ffmpeg.wasm to process.
Download the animated GIF.

Tips for smaller GIF files

Keep clips under 5 seconds for web-friendly file sizes.
Use 8–10 FPS instead of 24 — the difference is subtle for short loops.
Reduce the width to 320px for instant-message stickers.
Avoid scenes with complex backgrounds or lots of colour variation.

常見問題

Why is my GIF file so large?: GIF uses an 8-bit (256 colour) palette and lossless compression. A 10-second, 480-pixel-wide GIF at 10 FPS is typically 5–20 MB. Reduce GIF size by lowering FPS, decreasing width, or shortening the clip duration.
What is the maximum GIF size recommended for web use?: Most web platforms accept GIFs up to 8 MB. For social media like Twitter/X and Slack, keep GIFs under 5 MB. For embedding in websites, aim for under 2 MB per GIF to avoid impacting page speed.
Which input formats can be converted to GIF?: ffmpeg.wasm supports MP4, WebM, MOV, AVI, MKV, and most other common video formats as input.
Is my video uploaded during conversion?: No. All conversion runs locally in your browser using ffmpeg.wasm. Nothing is sent to any server.
How do I get the best GIF quality?: Use a higher FPS (15–24) for smooth motion and a wider scale for clarity. For the best colour quality, use a short clip with limited colour variety — GIF is restricted to 256 colours per frame.
How long does GIF conversion take?: ffmpeg.wasm runs in single-threaded WebAssembly. Converting a 10-second clip at 10 FPS typically takes 10–60 seconds depending on video resolution and device speed.
Can I convert a GIF back to a video?: Yes, use the Video Converter tool to convert a GIF to MP4 or WebM. GIFs converted back to video will have the 256-colour limitation of the GIF format.
Why does my GIF look washed out or have banding?: GIF supports only 256 colours per palette. Videos with smooth gradients or many colours will show colour banding in GIF format. This is a fundamental GIF limitation. Reducing the clip length and using lower-saturation content helps.

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