Image Resizer
Resize by percentage or to fit a size.
Drop an image to resize
PNG, JPG, WebP or GIF · drag & drop, paste, or click to browse
Runs entirely in your browser — nothing you enter is uploaded or sent to a server.
This tool only scales images down — enlarging can't invent detail that isn't there and just looks soft, so we leave it out to keep results crisp. It runs entirely on your device; nothing you drop in is uploaded. Read our full disclaimer.
About this tool
Sometimes you don't need a smaller file so much as smaller dimensions — a 4000-pixel-wide photo where 800 will do, an avatar that must sit in a box, or an image trimmed so a page loads quickly. This tool scales an image down by a percentage or to fit within a width and height you set, always keeping its proportions so nothing ends up stretched. Pick the output format, and for JPG or WebP a quality level. As with every tool here, the work happens in your browser.
Example
A 4000 × 3000 photo set to Max dimensions 1200 × 1200 comes out 1200 × 900 — the proportions are kept, so it fits the box without distortion.
How to use
- 1Drop in an image; its current dimensions and size are shown.
- 2Resize by percentage, or switch to Max dimensions and set a width and height to fit within.
- 3Choose the output format (or keep the original) and a quality for JPG/WebP.
- 4Resize, then download the result — its new size is baked into the filename.
Features
- Resize by percentage or fit-within a maximum width and height.
- Proportions are always preserved; it scales down only, never blurs by enlarging.
- Export as JPG, PNG, or WebP with a quality control.
- The download filename records the new pixel dimensions.
Frequently asked questions
Why can't I make an image bigger?
Enlarging can't add detail that isn't in the original — it interpolates and looks soft. To keep results sharp, this tool only scales down. A bigger version needs the source at a higher resolution.
Does fit-within ever stretch the image?
No. It keeps the original proportions and sizes the image to sit inside your width and height, so one side may come out smaller than the cap you set.
JPG, PNG, or WebP — which should I pick?
JPG for broad compatibility, PNG for graphics with sharp edges or transparency, and WebP when you want the smallest file at similar quality.
Where does the resizing run?
In your browser, using the canvas. The image is never sent anywhere.
More image tools
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