Webflow does not allow GIFs larger than 4MB to be uploaded, and GIF autoplay is not reliable on mobile devices. However, you can work around this by converting your GIF to a video format.
1. Convert the GIF to a Video Format (MP4)
- Use a tool like Ezgif.com or Adobe Media Encoder to convert your GIF to an MP4 file.
- Ensure the video is under 30MB (Webflow’s asset upload limit) and optimized for web usage.
- Set the resolution appropriately for mobile (e.g., 720px wide or smaller).
2. Upload the MP4 Video to the Webflow Asset Manager
- Go to the Webflow Designer and open the Assets panel.
- Click the Upload icon and upload your optimized MP4 file.
3. Embed the Video Using a Background Video Element
- Drag a Background Video element from the Add panel into your layout.
- Replace the default video with your uploaded .mp4 file.
- The video will autoplay, loop, and be muted by default, which ensures compatibility on mobile.
4. Alternatively, Use an HTML Video Embed (For More Control)
- If you need player attributes like
playsinline, autoplay, and muted, use a Custom Embed element. - Add this inline snippet:
<video autoplay muted loop playsinline loading="lazy" src="your-video-url.mp4"></video>
- Host the video externally if it exceeds Webflow’s file size limit (e.g., use Vimeo Pro, Amazon S3, or Bunny.net).
5. Ensure Mobile Support and Performance
- Mobile browsers block autoplay unless the video is muted—ensure muted is always set.
- Keep file size small (ideally under 10MB) to avoid slow loading.
- Avoid using GIFs directly on mobile due to poor performance and autoplay inconsistency.
Summary
To autoplay a >4MB GIF on mobile in Webflow, convert it to an MP4 video, upload it as a Background Video or embed with a <video> tag, and muted autoplay will work consistently across devices.