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YouTube Thumbnail Resizer

Resize any image to the YouTube thumbnail size, 1280×720 (16:9), as a JPG under 2 MB, in your browser. Crop to fill or fit with padding. Free, no upload.

Drop files here, paste with Ctrl+V, or

Accepts .png, .jpg, .jpeg, .webp, .gif, .bmp, .avif, .heic, .ico, .dds, .tga · Processed on your device, never uploaded

90 is visually identical to the original for most images; 75-85 gives much smaller files.

Runs on the browser's own image decoder, with libheif for HEIC, in WebAssembly. Your file stays in this tab.

About this tool

YouTube wants thumbnails at 1280 × 720 pixels, 16:9, under 2 MB, as JPG, PNG, or GIF. Drop a screenshot, a photo, or a design and get a 1280 × 720 JPG ready to upload; fill crops the image to 16:9, fit keeps everything with white bars. Quality 90 keeps text sharp while staying well under the size limit.

Batch mode resizes a folder of frames or designs at once, so a channel refresh takes one drop.

How to use it

  1. Drop your PNG, JPG, WebP or GIF files into the box above, or click to browse. Nothing is uploaded.
  2. Adjust the options if you want; the defaults suit most files.
  3. Click the button and wait a moment.
  4. Download the results individually or all at once as a ZIP.

Questions

Why 1280 × 720 and not bigger?

YouTube displays thumbnails at or below that size. Larger uploads are simply downscaled, and a 1920 × 1080 version is only useful if you also use it as a cover image elsewhere.

Fill or fit?

Fill crops the edges so the image covers the whole frame, which is right for photos. Fit keeps the whole image and pads the rest, which is right for logos and text.

Can I batch resize?

Yes. Drop several images and each is resized to the selected preset; download them one by one or as a ZIP.

Does it keep transparency?

PNG output keeps transparent areas; JPG output fills them with white. Pick the format that the platform accepts.

Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.

Format guides

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