Image resizer
Scale an image to an exact width, in the page.
Or choose a file. It is processed in this tab and never uploaded — which is also why it handles photos far larger than any upload limit.
Choose a fileScales an image to the width you give, keeping the aspect ratio unless you turn that off. Useful for the sizes that keep coming up — 1200px for an OG image, 800px for a blog body image, an avatar that has to be square — without opening an editor or uploading a file to a service that keeps it.
How it works
- Scaling uses the browser's own high-quality canvas resampling.
- Aspect ratio is kept by default; turning it off stretches the image to the width you set.
- The output format can stay as it was or change at the same time.
Where your data goes
Nowhere. This tool runs entirely in your browser: the text you paste is processed by the page and is never transmitted to a server or written to a log.
When a run costs points, a one-line summary is saved to your own history so you can find it again. The summary records the shape of the run — sizes, counts, the values you looked up — never the content you pasted.
What it costs
Free up to 2.00 MB per run without an account. Past that, a run costs 2 points and is saved to your history.
Points come from signing up, checking in daily, commenting and completing your profile.
See how points workCommon questions
- Can I enlarge an image?
- You can, but the detail is not there to recover — the result is a blurrier version at more pixels. Enlarging past about 150% is visible. Genuine upscaling needs a model, not a resampler.
- Why does my resized image look soft?
- Downscaling by a large factor in one step loses fine detail. If sharpness matters, scale in two or three steps, or scale to a multiple of the target and let the browser do the final step at display size.
- What size should an OG image be?
- 1200 × 630. That is the ratio Facebook, LinkedIn, Slack and most others crop to; anything else gets cropped somewhere unpredictable.
The open-source behind it
This tool is a self-contained implementation. nodeca/pica (MIT) does the same job as a library — if you need this behaviour inside your own program, start there rather than calling a web page.
nodeca/picaAlso known as
- resize image
- image resizer online
- change image dimensions
- scale image
- resize photo