Compress JPEG Images for Reddit
Reddit image posts display in feed thumbnails and full-size previews. Optimized images load faster and look sharper across Reddit's desktop site, mobile app, and old.reddit. The most widely used lossy image format, ideal for photographs and complex images with millions of colors. Use ImageSmith to compress your JPEG images to the ideal file size for Reddit — target under 20,000KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
JPEG
Max file size
20,000KB
Dimensions
1200×628 (link previews), 1080×1080 (image posts)
✓Reddit thumbnails display at 140×140 — ensure key content is centered
✓Use 1200×628 for link preview images
✓PNG for screenshots and graphics, JPEG for photographs
✓Reddit GIFs auto-convert to MP4 for better performance