Compress AVIF Images for Medium
Medium's editor displays images at up to 1400px wide. Properly optimized feature images make articles look professional and load quickly for readers on all devices. 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 Medium — target under 25,000KB for optimal performance. Processing is fully browser-based — no server uploads.
Recommended format
JPEG
Max file size
25,000KB
Dimensions
1400×933 for article feature images
✓Feature images display at up to 1400px wide — optimize to this width
✓Target under 500KB for article images to maintain fast reading speed
✓PNG for diagrams and screenshots, JPEG for photographs
✓Medium applies light additional compression on upload
Compress AVIF for Other Platforms
Compress AVIF for Medium — FAQ
Medium works best with images under 25,000KB. Recommended dimensions: 1400×933 for article feature images. ImageSmith can compress AVIF images to any target size in seconds.
Medium primarily supports JPEG, PNG, GIF. Converting to JPEG is recommended for best compatibility.
Upload your AVIF image to ImageSmith, set a target size under 25,000KB, and compress. Feature images display at up to 1400px wide — optimize to this width
Medium displays feature images at up to 1400px wide. Use 1400×933 pixels (3:2 ratio) and compress to under 500KB for fast loading. PNG is best for diagrams and code screenshots.