Thumbnail Resizer
Crop and resize an image to common thumbnail and social media dimensions, processed locally in your browser.
Free to use, no sign-up, no limit on how many times you run it.More creator tools
Overview
Every platform expects a slightly different image size. This tool resizes and center-crops your image to a preset target so it displays correctly without stretching or letterboxing.
- 8 built-in presets covering the most common platforms
- Cover-fit cropping so the result always fills the target exactly
- Processed locally — your image is never uploaded
How to use it
- 1Choose a target size preset
- 2Upload your image
- 3Download the cropped, resized result
Tips
- — For portrait presets like Stories, keep your subject centered in the original image — this tool crops from the center outward
Frequently asked questions
How does the crop work?
The image is scaled to fully cover the target dimensions and then center-cropped, similar to how 'object-fit: cover' works in CSS — so no empty bars appear, but the edges of the original image may be trimmed.
Which platforms are covered?
YouTube thumbnails and banners, Instagram posts and stories, Facebook covers, X posts, LinkedIn posts, and Pinterest pins.