Image Resizer
Resize by pixels, percentage or preset — in your browser, never uploaded.
Your image
Processed in your browserHow this processes your file
The image is decoded into a bitmap, drawn to a canvas at the size you ask for and encoded again — all inside the page. The resampling runs in a single high-quality step rather than repeated halving, which is what keeps thin lines and small text legible on a large reduction. Ask for a size bigger than the original and the tool still does it, but reports the scale as an enlargement: interpolation invents pixels between real ones, and the result is a softer version of the same detail.
What the results mean
- Scale
- The output size as a percentage of the original. Above 100% is an enlargement, which adds pixels but no detail.
- Keep the aspect ratio
- With both dimensions filled in, the image is fitted inside that box rather than stretched to it. Unlock it only when you deliberately want distortion.
- Quality
- JPEG and WebP compression level. 0.85 is invisible for photographs; below 0.7 shows on flat colour and text.
- Metadata removed
- A side effect of re-encoding, and usually a welcome one — the output carries no camera model, timestamp or location.
Common problems and fixes
- The resized image looks blurry
- Check the scale figure. Above 100% the softness is interpolation and cannot be avoided; below 100% try PNG output, which does not add compression artefacts on top of the resampling.
- I need a specific file size, not dimensions
- Resize first, then run the result through the image compressor, which reports the size at each quality level.
- The image came out rotated
- It should not — the EXIF rotation is applied before drawing. If it still happens, the original has a rotation flag that disagrees with its own pixels, which some phone editors leave behind.
- My PNG got much bigger
- PNG is lossless, so a photograph saved as PNG is often larger than the JPEG it came from. Use JPEG or WebP for photographs and PNG for graphics with flat colour.
Frequently asked questions
How do I resize an image without losing quality?
Reduce rather than enlarge, do it in one step from the original, and choose PNG or a high JPEG quality for the output. Reducing discards information by definition, but a single high-quality resampling step from the source is as clean as it gets. What genuinely costs quality is resizing an already-resized export, or saving at a low JPEG quality on top of an image that has been compressed before.
Can I make a small image bigger without it going blurry?
Not really. Enlarging interpolates between existing pixels — it can only guess at what lies between them, so edges soften. AI upscalers hallucinate plausible detail, which looks sharper but is invented, and this tool does not do that. If the result is for print, go back to the original source at a higher resolution.
Is my image uploaded to a server?
No. The image is decoded, drawn and encoded by your own browser, and the page has no upload endpoint at all. You can disconnect from the internet after the page loads and it will still work.