~/tools/Change Image Pixel Size
2026·09·08
toolImage editingfree

Change Image Pixel Size

Set exact pixel dimensions, with or without locking the ratio.

Türkçe: Görüntü Piksel Boyutu Değiştirme

Drop an image here, or

Nothing is uploaded — the file stays in your browser.

Runs entirely in your browser. Nothing you paste is uploaded, logged, or stored.

How to use it

  1. Drop a JPG, PNG, or WebP image onto the picker.
  2. Type the width and height you need, or pick one of the presets.
  3. Leave the aspect ratio locked to avoid distortion, or unlock it to stretch.
  4. Choose the output format and quality, then download.

What it does

Resizes an image to an exact pixel size using the browser's own canvas scaler with high-quality smoothing. You can lock the aspect ratio so typing one dimension fills in the other, or unlock it when a layout demands specific numbers and you accept the distortion.

Choosing a format

  • JPEG for photographs — smallest files, no transparency, adjustable quality.
  • PNG when you need transparency or crisp flat colour, at the cost of size.
  • WebP when you want JPEG-like size with transparency support.

FAQ

Are my images uploaded to a server?
No. Every tool here decodes and re-encodes your file using your browser's own Canvas APIs. The image never leaves your device, which is also why it works offline once the page is loaded.
Will enlarging an image make it sharper?
No. Scaling up interpolates pixels that were never captured, so the result looks soft. Resizing down is lossless in perception; resizing up is a compromise.
Why did my PNG get bigger after resizing?
PNG uses lossless compression that works best on flat colour. Re-encoding a photo as PNG, or resizing to dimensions that break up runs of identical pixels, can grow the file. Try WebP or JPEG for photos.

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