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Resize image to 1024×1024

Create a high-resolution square image for websites, apps and profile uploads.

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.

1024×1024 is the most common high-resolution square: AI image inputs, app icons (1024 px source), retina-ready profile photos and Open Graph fallbacks. Drop a photo, square-crop it, and export — your file stays in the browser.

What 1024×1024 is for

1024×1024 is the standard input size for many AI image models, the source dimension for app icons (iOS, Android, macOS) and a sharp retina-ready square avatar. Open Graph fallback images often use this size too.

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 1024×1024. 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 is 1024×1024 used for?

It's the standard input size for many AI image models (Stable Diffusion, Midjourney source uploads, OpenAI image API), as well as a high-DPI app icon and a sharp profile photo for high-density screens.

Will the image be stretched?

No. The editor center-crops to a 1:1 square first, then resizes to exactly 1024×1024. Drag and zoom inside the frame to choose the composition.

Is anything uploaded?

No. The resize runs locally in your browser using the Canvas API.

Best format for AI uploads?

PNG preserves every pixel exactly. JPG is much smaller and usually fine for photo inputs. Pick the format that matches what your AI tool expects.

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 1024×1024?

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.