Compress HEIC 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. High Efficiency Image Format — the default photo format on iPhones and modern Apple devices. Excellent compression. Use ImageSmith to compress your HEIC images to the ideal file size for TikTok — target under 25,000KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
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