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Resize image to 400×400

Crop and resize an image to exactly 400×400 pixels in your browser. LinkedIn-style square — no upload required.

Drop a photo here, or tap to choose

JPG · PNG · WEBP · HEIC — files never leave your browser

0 photos uploaded — ever.

All processing happens locally in your browser.

400×400 is LinkedIn's recommended profile photo size and works well for Slack, Discord, GitHub and most community avatars. Drop a photo, frame the face inside the square, and download. Everything happens locally in your browser.

What 400×400 is for

400×400 is LinkedIn's documented profile-photo size and the recommended dimension for many SaaS platforms (Slack, Notion, Asana). It's the safest default for a "small square avatar" if no exact spec is given.

How the resize works

The editor crops your source to a 1:1 (square) aspect ratio, then resamples the cropped pixels down (or up) to exactly 400×400. Browsers use a high-quality bilinear / Lanczos filter for the resampling step, so detail is preserved as well as it would be in a desktop image editor. Exact integer pixels — no fractional dimensions, no surprise rounding when an upload portal validates your file.

Picking the right format

JPG — smallest file, best for photographs and most uploads.
PNG — lossless, supports transparency, larger file. Pick it when the result will be edited again or layered onto another background.
WebP — modern, smaller than JPG at the same quality. Universally supported in browsers, occasionally rejected by older desktop apps.

How to use this page

Drop your photo above.
The crop frame is already locked to 1:1 (square). Drag or pinch to position the subject.
Click Generate and download the resized file.

Privacy

Every step happens inside the browser tab you have open. Your image is decoded, cropped and re-encoded by the same JavaScript engine that runs this page — there is no upload, no temporary file on a server, and no "processed copy" cached by us afterwards. When you close the tab, the blob is gone. We document the full pipeline on our Methodology and How it works pages.

FAQ

What's 400×400 good for?

LinkedIn-style square. It's a common spec for online forms, profile pictures, social cards, and content uploads.

Will it stretch the photo?

No — the editor center-crops to the 400:400 aspect first, then resizes to exactly 400×400. You can drag and zoom inside the crop frame.

Will my photo look stretched?

No. The crop frame is locked to 1:1 (square), so the editor center-crops before resizing. Aspect ratio is preserved.

Can I upscale a small photo to 400×400?

You can, but a meaningful upscale needs more pixels than the source has. Browsers only interpolate — they cannot invent detail. For a sharp result, start from a source at least as wide and tall as the target.

What happens to my image after I close the tab?

It is freed from your browser's memory like any other image you opened. We never received it, so we have nothing to delete on our side. See Trust & Safety for the full policy.