X accepts GIFs up to 15 MB from the website and 5 MB from the mobile apps. Drop a clip, trim the moment, add a caption, and GifCraft keeps the file under the limit you pick.
Drop the video or GIF and trim to the moment.
Add a caption if you want; the size target defaults to 5 MB so it works from the app too.
Make the GIF and attach it to your post.
One GIF per post, up to 15 MB when posting from the web and 5 MB from the iOS and Android apps, up to 1280×1080 pixels. X converts GIFs to a looping video on upload, so a 480–640 px wide GIF looks just as sharp in the timeline as a huge one. Source: X Help Center (media upload limits).
GIFs autoplay silently in the timeline, so the first frame matters: trim so the action starts immediately and put any caption on screen from frame one.
No. All processing happens in your browser tab. Your files never leave your device.
15 MB on the web and 5 MB in the mobile apps. GifCraft’s default target here is 5 MB so the GIF works everywhere; raise it in Size & presets if you post from a computer.
Make the GIF here, tap Download (or Share → Save Image on iPhone), then attach it from your Photos or Gallery when you write the post.
X converts every GIF into a looping MP4 for playback. It still behaves like a GIF: silent, looping and autoplaying.