YouTube Thumbnail Resizer
Upload any image and export it at the exact YouTube thumbnail size — 1280×720, 16:9, under 2MB. Runs entirely in your browser; nothing leaves your device. Free.
About this YouTube thumbnail resizer
YouTube wants every custom thumbnail at exactly 1280×720 pixels — a 16:9 aspect ratio — in a JPG, PNG, GIF, or BMP file that's under 2 MB. Upload an image that's the wrong shape and YouTube either rejects it or stretches it awkwardly. This free resizer fixes that in one step: drop in any JPG or PNG and it center-crops and scales your image to the exact 1280×720 thumbnail size, then lets you download it as a JPG (or PNG). The whole thing runs entirely in your browser — your image is never uploaded to a server, so it's instant and private. No login, no extension, no watermark.
Frequently asked questions
- What size should a YouTube thumbnail be?
- YouTube recommends a thumbnail of 1280×720 pixels — a 16:9 aspect ratio — saved as a JPG, PNG, GIF, or BMP file under 2 MB. 1280×720 is the minimum width YouTube allows and the size that looks crisp everywhere, from the watch page to mobile and TV. This tool crops and resizes your image to exactly that spec.
- Will my image be uploaded to a server?
- No. The entire resize happens in your browser using the HTML canvas — your image is never uploaded, stored, or sent anywhere. It never leaves your device, which makes it instant and completely private.
- What image formats can I use?
- You can upload a JPG or PNG image. The tool exports your finished thumbnail as a JPG (smallest file, best for YouTube) and you can also download a PNG if you need lossless quality or transparency support.
- Is it free?
- Completely free — no account, no credit card, no watermarks, and no limits. If you want more than resizing — like finding the breakout videos in your niche and writing full scripts in your own voice — sign up for Outlyo free and get 50 credits to start.
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