Free tools › Images
Resize image
Set the longest side. Proportions are kept, nothing is stretched, nothing is enlarged.
More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.Add to Chrome
How to resize image
- Drop the image.
- Type the largest width and height it may have.
- Press Resize and download.
What happens to your file
The image is scaled down so it fits inside the box you gave, keeping its proportions — a 4000 × 3000 photo with max 1600 × 1600 becomes 1600 × 1200.
It is never enlarged: upscaling invents detail that is not there, and every viewer’s zoom does the same job without pretending. If your image is already smaller, you get it back unchanged and the page says so.
JPG, PNG and WebP are resized on your device; other formats take the cloud path on this page.
Questions
How do I resize to exact dimensions?
Give both a width and a height in the same ratio as the image. To force a different ratio you need a crop — use Crop image.
Which size for a profile picture?
800 × 800 is more than any service displays; 400 × 400 is typical. Larger only wastes bytes.
Why is the file not much smaller?
Fewer pixels help, but the encoder quality decides more. Run Compress image afterwards with a size target.
How do I resize an image to a size in KB instead?
That is a different job, and this is not the page for it. Pixels and kilobytes are only loosely related — two photographs of the same dimensions can differ tenfold in file size. Compress image takes a target in kilobytes and searches for the quality that meets it; there are pages for the usual numbers, at 20 KB, 50 KB, 100 KB and 200 KB.
What if my form wants both a pixel size and a KB limit?
Do them in that order: resize here to the pixel size the form names, then compress the result to the KB limit. Doing it the other way round wastes the compression, because changing the dimensions afterwards changes the file size again.
Do it once, not on every form
A form that wants a square JPEG under 240 KB says so on the page. The Fylane extension reads that, fits your photo to it, and puts it in the field — without you working out what 240 KB looks like.
And it keeps the result. The next application that asks for a résumé, a cover letter and a photo fills all three from one tap, each one refitted to what that site accepts.
Your files stay in the browser, encrypted, on your machine. Nothing is uploaded to keep them and nothing is sent anywhere to fill a form.
Related tools
Do this in code
curl -X POST https://api.fylane.dev/v1/jobs \
-H "Authorization: Bearer $FYLANE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"file_id": "<file id>",
"operation": "image.resize",
"options": {}
}'The same operation, image.resize — Resize to your dimensions — inside, cover or fill; never enlarged. Answers WebP unless `format` says otherwise. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.