Compress BMP Images for Facebook
Facebook recompresses images on upload, and uses aggressive compression for link previews. Pre-optimizing your images ensures they maintain quality after Facebook's processing. Uncompressed Windows bitmap format with very large file sizes. Not suitable for web use without compression. Use ImageSmith to compress your BMP images to the ideal file size for Facebook — target under 4,000KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
JPEG
Max file size
4,000KB
Dimensions
1200×630 (link previews), 1080×1080 (square posts)
✓Use sRGB color profile for accurate colors across devices
✓Keep profile photos at 170×170 and cover photos at 820×312
✓Link preview images should be 1200×630 for optimal display
✓Upload PNG for graphics with text to avoid JPEG artifacts