Compress 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. Use ImageSmith to compress your YouTube images before sending — free, instant, and entirely in your browser. No account needed, no watermarks, no ads. Target under 2,048KB for best results on YouTube.
Max size
2,048 KB
Format
JPEG
Size
1280×720 (thumbnails), 2560×1440 (channel art)
- 1Custom thumbnails must be under 2MB file size
- 2Use 1280×720 pixels — displayed at various sizes across devices
- 3High contrast with bold, readable text increases click-through rate
- 4Bright, saturated colors stand out in recommendation feeds