Compress BMP Images for YouTube
YouTube thumbnails are the single most impactful factor in video click-through rate. Compressed, well-sized thumbnails load quickly and display crisply across all devices. 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 YouTube — target under 2,048KB for optimal performance. Processing is fully browser-based — no server uploads.
Recommended format
JPEG
Max file size
2,048KB
Dimensions
1280×720 (thumbnails), 2560×1440 (channel art)
✓Custom thumbnails must be under 2MB file size
✓Use 1280×720 pixels — displayed at various sizes across devices
✓High contrast with bold, readable text increases click-through rate
✓Bright, saturated colors stand out in recommendation feeds
Compress BMP for Other Platforms
Compress BMP for YouTube — FAQ
YouTube works best with images under 2,048KB. Recommended dimensions: 1280×720 (thumbnails), 2560×1440 (channel art). ImageSmith can compress BMP images to any target size in seconds.
Yes — YouTube supports BMP. Recommended format: JPEG.
Upload your BMP image to ImageSmith, set a target size under 2,048KB, and compress. Custom thumbnails must be under 2MB file size
YouTube thumbnails must be under 2MB. Use 1280×720 pixels in JPEG or PNG format. High-contrast thumbnails with readable text consistently achieve higher click-through rates.
YouTube channel art should be 2560×1440 pixels. The safe area that displays on all devices is the center 1546×423 pixels. Keep the total file under 6MB.