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Image Resizer

Resize a photo to exact pixels or by percentage, keeping the aspect ratio. Free, instant, and processed on your device.

Drop an image, or tap to choose

JPG, PNG or WebP · your image never leaves your device

How to resize an image

Drop your photo, then either type the exact width/height in pixels (with "Lock aspect ratio" on, the other side fills in automatically) or drag the percent slider to scale up or down. Download the result in the same format or convert it.

Common sizes

Frequently asked questions

Will resizing blur my photo?

Making an image smaller stays sharp. Enlarging beyond the original size can look soft, since there's no extra detail to add.

Does it keep the aspect ratio?

Yes, when "Lock aspect ratio" is on. Turn it off to stretch to exact dimensions.

Resizing well: what you can fix, and what you cannot

Resizing changes how many pixels a picture is made of. That sounds trivial, but it is the step that decides whether a photo submitted to a form looks sharp or looks like a smear — and it is the step most people skip.

Making smaller is safe. Making bigger is not

Reducing dimensions is a genuinely lossless-looking operation: you are throwing away pixels the viewer was not going to notice, and the result usually looks better than the original at that display size. Enlarging is the opposite. Nothing can add detail that was never captured — a 200-pixel photo blown up to 800 pixels is the same picture with each dot smeared over sixteen, which is why it looks soft. If a form demands larger dimensions than your photo has, retake it rather than upscaling it.

Aspect ratio, and why forms reject photos

The aspect ratio is the relationship between width and height. If a form wants 200 × 230 and your photo is a normal phone shot, the shapes do not match — forcing it to those exact numbers will squash faces and portals often detect and reject it. The right move is to crop to roughly the target shape first, then resize to the exact pixel numbers. Crop changes what is in the frame; resize changes how many pixels describe it. You usually need both.

Questions that come up

What about DPI — the form says 300 DPI

For an image you are uploading, DPI is very nearly meaningless. It is a number stored in the file describing intended print size; screens and upload validators care about pixel dimensions. If a form asks for 300 DPI, what it almost always needs is enough pixels — get the pixel dimensions right and you will be fine. DPI matters when you are printing, which is a different job.

Resize or compress — which do I need?

Resize when the form specifies dimensions in pixels. Compress when it specifies a file size in KB. When it specifies both, resize first and compress second; doing it the other way round wastes the quality you just paid for.

Does resizing change the format?

You choose the output — JPG, PNG or WebP. Keep PNG for signatures, logos and anything with sharp edges or transparency; use JPG for photographs and for anything a government portal will accept.

Is the picture uploaded to resize it?

No. The resizing happens in your browser, on your device. Nothing is sent anywhere, which matters when the thing being resized is an ID card or a signature.

Compress to a KB target → Passport photo maker Convert between formats