Resize Image

What this image resizer does

This tool changes the pixel dimensions of an image. You can type exact width and height, scale by percentage, or pick a preset for a social platform, a print size or a common screen size. An aspect-ratio lock keeps proportions correct while you work, so a portrait photo does not end up stretched.

How a resize is done decides how good it looks. Shrinking a large photograph in one jump drops pixels unevenly, producing jagged edges and moire patterns on detail such as brickwork, fabric or hair. This tool halves the image down in steps first, then finishes with a high-quality pass.

There is a ceiling worth knowing: enlarging an image does not add real detail, only interpolated pixels that look softer than a genuine high-resolution original.

How to resize an image

Set the target size, then apply the same settings across a batch.

1. 1Add your imagesDrop in one file or up to sixty. Each row shows the current dimensions and aspect ratio before you change anything.
2. 2Choose pixels, percentage or a presetPixels is precise when a platform states a requirement, percentage is quick for halving, and presets cover common sizes.
3. 3Keep the aspect ratio locked unless you mean to change itWith the lock on, editing one dimension adjusts the other. Turn it off only when a form demands a fixed shape.
4. 4Decide what to do about the formatKeep JPG for small photographic files, PNG for graphics and transparency, or convert to WebP or AVIF for the smallest result.
5. 5Resize the batch and downloadEvery file is processed with the same rules, which suits product photos that must match. Save them individually or as one ZIP.

Why resize images here

For batches that need identical treatment, and for anyone who has seen a good photo ruined by a careless downscale.

• Step-down resampling that keeps detailHalving repeatedly gives the algorithm far less to lose on each pass, so fine texture and thin lines survive.
• Presets that match real requirementsSocial, print and screen sizes are provided, so you need not convert between inches and pixels at a given resolution.
• One setting across a whole batchSixty images resized to the same dimensions in one action, which turns a tedious evening into a single step.
• Honest about enlargementThe tool tells you when you are upscaling rather than quietly producing a soft, oversized file.
• Your files are not uploadedClient photography and personal albums stay on your device, with no account to create and no connection required.

Your files stay on your device

Every pixel is rearranged inside your browser tab. The site is static files with no application server, so there is no upload step and no copy of your image anywhere else.

The browser decodes the image, draws it repeatedly onto an offscreen canvas during the step-down process, and encodes the final result. Nothing about the files or your settings is stored in cookies.

Resizing is often the last step before publishing, so unreleased designs and pre-launch marketing assets are exactly the files that pass through online resizers. Doing it locally removes the question.

Good to know

• Enlarging cannot add real detail. Upscaled images are interpolated from existing pixels, so they look softer on close inspection and will not match a genuine higher-resolution original.
• Resizing alone does not always shrink a file much. A large PNG at half its dimensions can still be heavy, because format and encoding matter more than dimensions.
• Resampling is lossy. Resizing down and back up leaves an image visibly softer, so always work from the source rather than a previously resized copy.
• Turning the aspect-ratio lock off distorts the subject. Cropping to the target shape almost always looks better than stretching to it.

Frequently asked questions