Prepare a GIF for your platform
Platform limits and recommended compression targets are different. Check the limit shown in your account before uploading.
| X / Twitter | The GIF upload allowance differs between mobile and the website.
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How to use this tool
- Check whether you are posting from mobile or the X website and use the corresponding allowance.
- Add a GIF to the tool with the free 1MB target selected.
- Compress and preview movement, text, and color detail throughout the animation.
- Download the output and upload it through your chosen posting client. Confirm its actual size if the upload is rejected.
Match the file to your posting client
X lists 5MB for animated GIFs on mobile and 15MB on the web. A file that fits the website limit can still be too large for the mobile app. Check the linked official guidance if your upload is rejected.
If you use a scheduling service or another upload integration, check that service's requirements as well. The mobile allowance is not a universal statement about every API upload.
Use 1MB as a starting point, then judge the result
A short reaction or a simple visual can often tolerate a smaller budget than a detailed animation. The 1MB preset lets you try a compact version without requiring a custom target. Whether it succeeds depends on the source file.
Inspect captions and the busiest moving region. The compressor keeps the frames, timing, and loop behavior while color and lossy optimization can change appearance. If the message becomes harder to read, consider a shorter or simpler source.
Upload success and autoplay are different questions
A file being accepted does not mean every viewer will see it play automatically. The viewing client and playback settings can affect that experience. There is no reason to treat a particular compressed size as a guarantee of autoplay.
Keep the first frame understandable when possible, especially when the animation carries an instruction. After posting, check the result in the client your audience is likely to use.
When the GIF still fails to post
Compare the downloaded file's actual size with the correct client allowance. Confirm that the file is a working GIF and read any upload error before changing compression settings again. A corrupt source or a client issue will not necessarily be fixed by reducing bytes.
Free source uploads here are limited to 10MB per GIF, with three files per batch. A source permitted by X's web allowance may exceed this tool's free input limit. Pro supports GIFs up to 50MB per file.
Frequently asked questions
Does X have the same GIF limit on mobile and web?
No. Its help documentation lists 5MB on mobile and 15MB on the web. Check the official source and any error shown by your client.
Will compressing below 1MB make the GIF autoplay?
No. This tool reduces the file size; it does not control X's player or viewers' playback settings.
Can I use this page for an API upload?
You can compress the GIF here, but you must separately follow the current API and integration requirements. Do not infer those requirements from the mobile posting limit.
Does my GIF leave the browser for compression?
GIF file contents are processed in your browser and do not need to be uploaded to CompressGIF.