How it works
Upload
Drop your photo into the box above — JPG, PNG or WebP. It is read locally; nothing is uploaded.
Resize
The dimensions are pre-set to 1280 × 720 — YouTube's official thumbnail size. Adjust them if you need a different size, then hit Resize & download.
Download
Check the before/after dimensions in the preview, then download your perfectly sized image.
Why 1280×720 is the YouTube standard
1280×720 is YouTube's official thumbnail specification: the 16:9 widescreen ratio at HD resolution. YouTube displays thumbnails at many sizes — from the tiny suggestion rail to the full-width player — and 1280×720 is the resolution that stays crisp everywhere without bloating past the 2MB upload limit.
Using any other size means YouTube scales your image itself, often with visible softness. Resize to exactly 1280×720 here and your thumbnail goes up pixel-perfect — what you see in the preview is what viewers see.
Tips for thumbnails that get clicks
- Crop to fill keeps faces natural. If your photo is not 16:9, the default crop trims edges instead of squishing faces — or crop to 16:9 yourself first for full control over what gets cut.
- Design text big. Most viewers see your thumbnail at phone size. Keep title text large (30px+) and high-contrast — fine print turns to mush at 1280×720.
- Watch the 2MB limit. YouTube rejects thumbnails over 2MB. At 1280×720 a quality JPG almost always fits — if yours doesn't, run it through compress to 100KB first.
- Export in sRGB. Screenshots and designs from pro tools sometimes carry odd color profiles — exporting to plain JPG here normalizes colors so the thumbnail matches your design.
Common uses
- YouTube thumbnails — the official 1280×720 size, ready to upload.
- Video cover art — 16:9 covers for courses, webinars and reels.
- Social preview cards — 16:9 link previews for Twitter/X, Discord and blogs.
- Channel banners (cropped) — quick 16:9 crops for header artwork.