Compress AVIF Images for TikTok
TikTok's slideshow feature supports up to 35 images per post. Properly optimized vertical images fill the full screen and create an immersive, high-quality viewing experience. Next-generation image format based on the AV1 video codec. Offers superior compression to both WebP and JPEG. Use ImageSmith to compress your AVIF images to the ideal file size for TikTok — target under 25,000KB for optimal performance. Processing is fully browser-based — no server uploads.
Recommended format
JPEG
Max file size
25,000KB
Dimensions
1080×1920 (9:16 vertical full-screen), 1080×1080 (square)
✓TikTok slideshows support up to 35 images per post
✓Vertical 9:16 format fills the full screen for maximum impact
✓Keep each image under 10MB for smooth, fast uploads
✓Use high-contrast, visually striking images to stop the scroll
Compress AVIF for Other Platforms
Compress AVIF for TikTok — FAQ
TikTok works best with images under 25,000KB. Recommended dimensions: 1080×1920 (9:16 vertical full-screen), 1080×1080 (square). ImageSmith can compress AVIF images to any target size in seconds.
TikTok primarily supports JPEG, PNG, WEBP. Converting to JPEG is recommended for best compatibility.
Upload your AVIF image to ImageSmith, set a target size under 25,000KB, and compress. TikTok slideshows support up to 35 images per post
TikTok supports JPEG, PNG, and WebP. For slideshows, use 1080×1920 vertical images. Each image can be up to 25MB, but keeping files under 5MB improves upload speed.
The 9:16 vertical ratio (1080×1920 pixels) is ideal for TikTok as it fills the entire phone screen. Square (1:1) images also work but leave black bars at the top and bottom.