YouTube Thumbnail Resizer

Resize any image to a perfect 1280×720 YouTube thumbnail in your browser — free, private, no upload. Auto-fits the 16:9 frame and keeps it under YouTube’s 2 MB limit.

🔒 100% private — your images never leave your browser. Every image is compressed entirely on your device. No upload, no server, no watermark, no limits — and it keeps working offline once this page has loaded.

No images yet — drop, browse or paste to get started.

About the YouTube Thumbnail Resizer

YouTube thumbnails are 1280×720 pixels (16:9), and the file must be under 2 MB. This tool scales your image to fill that frame, center-crops the overflow so nothing is stretched, and compresses it well under the 2 MB cap — all in your browser. Keep the important part (faces, text) near the center so it survives the crop, and remember thumbnails shrink in the sidebar, so keep text large.

Frequently asked questions

What size should a YouTube thumbnail be?

1280×720 pixels, 16:9 aspect ratio, under 2 MB, as JPG, PNG or WebP. This tool outputs exactly that.

Why is my thumbnail rejected for being too big?

YouTube caps thumbnails at 2 MB. This tool compresses your image under that limit automatically while keeping it sharp.

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