YouTube Thumbnail Resizer

Fit any image to a 1280x720 YouTube thumbnail, kept under YouTube's 2MB limit. Free, fast, and your files never leave your device.

Drop an image here or click to choose a file

JPG, PNG or WebP. Output is exactly 1280 x 720 pixels (16:9).

How to resize a YouTube thumbnail

  1. Drop your thumbnail artwork onto the drop zone or click to choose a file.
  2. Pick Crop to fill to use the whole 16:9 frame, or Fit with padding to keep the entire image.
  3. Choose JPEG for the smallest file, or PNG for crisp text and graphics.
  4. Click Resize & download — the tool keeps the file under YouTube's 2MB limit.

The 1280x720 standard and the 2MB limit

YouTube recommends a custom thumbnail of 1280 by 720 pixels — a 16:9 aspect ratio with a minimum width of 640 pixels — and enforces a hard 2MB file-size limit on the upload. Get either wrong and YouTube either rejects the file or scales your artwork, which softens text and dulls colours right where you need them to grab attention. This tool locks the output to 1280x720 and lets you decide how your source fills that frame. Crop to fill zooms the image so it covers the whole thumbnail with no letterboxing, ideal when your subject is centred. Fit with padding shrinks the full image inside the frame and fills the gaps with a colour you pick, so bold graphics stay intact. On export it saves at high quality and, if a PNG or busy photo would exceed 2MB, automatically eases the JPEG quality down until it fits. Everything runs on the browser canvas, so your files never leave your device, with no upload, watermark, or signup.

Other creator sizes

Cross-posting to social? Make a square with the 1080x1080 resizer or a vertical clip cover with the Instagram story resizer. Need a 1920x1080 channel banner or background? See the 1920x1080 resizer, or use the general image resizer for any dimension.

FAQ

What size should a YouTube thumbnail be?

1280 by 720 pixels in 16:9, which is exactly what this tool outputs. It is also the frame YouTube shows across desktop, mobile, and TV, so text stays legible at every size.

What is YouTube's thumbnail file-size limit?

2MB. This tool keeps the export under that by nudging the JPEG quality down if a large or PNG image would otherwise exceed it.

JPEG or PNG for a thumbnail?

Use JPEG for photo-heavy thumbnails to stay well under 2MB. Choose PNG when sharp text and flat graphics matter more than file size.

Are my images uploaded?

No. All resizing happens locally in your browser. Nothing is sent to any server.