Resize Image to 1024×1024 — Free Online

A rectangular source cannot fill a square without changing what is visible or changing its shape. The default centered crop removes material from the longer direction. Fit with padding retains the whole subject and leaves space on two sides. Stretch fills the canvas by distorting the image, so it is usually unsuitable for faces, products or diagrams whose proportions carry meaning.

For a product shot, check that handles, corners and packaging remain inside the crop. For a logo, padding may be preferable to trimming a mark. Transparent padding can remain in a PNG or WebP; JPEG uses white. If an off-center composition loses important content, prepare the framing in Crop Image first, then return here for the final 1024-pixel export.

Exact dimensions do not imply a particular file weight. A detailed PNG can be much larger than a simple JPEG at the same width and height. Use Compress PNG to 100KB or a custom compressor only when a byte rule also applies, and recheck the resulting dimensions because target compression can downscale. Keep this resize-only output when exact pixels are more important than a smaller byte count.

Open one image and check the width and height before processing. Selecting a preset fills both fields; you can replace those values with custom pixel dimensions. The default fit fills the canvas with a centered crop. When the shapes differ, the fit controls let you keep the whole picture with padding instead, or deliberately stretch it. Padding is white for JPEG and can be transparent for PNG or WebP. The aspect lock controls dimension edits; it does not protect an off-center subject from a crop.

The resizer accepts JPG, JPEG, PNG, WebP, HEIC and AVIF. HEIC needs its browser decoder, downloaded when first required; AVIF support depends on the browser. JPEG, PNG and WebP retain their format, while HEIC is exported as JPEG and AVIF as PNG. If the destination needs another format, use Image to JPG or the corresponding converter. A correct filename extension alone does not mean that a file has been converted. This page resizes a still image, not a video or an animated sequence.

Review the downloaded copy at its intended display size as well as at full resolution. Enlarging a small source creates more pixels but cannot restore missing detail. Resizing sets pixel dimensions, not a guaranteed maximum in KB; Reduce Image Size handles a file budget afterward. Keep the original for another attempt, since repeatedly saving a JPEG can accumulate visible damage. The tool processes files locally without signup and does not publish to another service. On mobile, keep the tab open until the result is ready, then confirm that the saved file is the newly generated copy.