PixelTools

Resize an image to exact dimensions

Set an exact width and height in pixels (or scale by percentage), keep the aspect ratio locked, and download — all in your browser. No uploads, no sign-up.

🖼️

Drop images here or click to browse

JPG · PNG · WebP · GIF · BMP · AVIF — processed locally, never uploaded

How to resize an image

  • 1. Drop in a JPG, PNG, or WebP image.
  • 2. Type the exact width or height you need, or use a percentage button to scale down.
  • 3. Keep "Lock to original" on to preserve proportions and avoid stretching.
  • 4. Pick a format and download.

Resizing is the fastest way to cut file size — a photo shown at 800px wide doesn't need to be 4000px. For getting under a specific file-size limit, use the compressor, and see reducing image file size for the full method.

Frequently asked questions

Will resizing reduce quality?

Shrinking an image is essentially lossless to the eye. Enlarging beyond the original dimensions will look softer, since there's no extra detail to invent.

Does it keep the aspect ratio?

By default yes — changing width updates height automatically. Turn off the lock to stretch to exact dimensions.

Are my images uploaded?

No. Resizing happens in your browser with the Canvas API; your image never leaves your device.

How this tool helps

Images that are too large for a profile, listing, form, or website need predictable dimensions. Use exact pixels for platform requirements, or percentage resizing when you want a quick proportional change.

How to use it

  1. Add an image and choose exact width/height or a percentage.
  2. Keep the aspect-ratio lock on unless distortion is intentional.
  3. Preview and download the resized copy.

Example

Resize a 4000px photo to 1200px wide for a faster-loading article image.

What you get

The download uses the selected output format and reports the final pixel dimensions.

Good to know

Limitations: Upscaling cannot restore detail that was not present in the original. Unlocking the ratio can stretch faces and logos.

Privacy: Resizing runs locally in your browser; no source image is uploaded.

How PixelTools makes this decision

PixelTools shows the settings and the result side by side so you can make an informed choice before downloading. File size is measured from the actual browser-generated output, while dimensions, format, and visual preview are kept visible because a smaller file is not automatically a better file. The original is never overwritten.

These tools are maintained as practical, browser-first utilities rather than upload forms. We document the trade-offs for each task, test the output in the browser, and link to related guides when a different format or workflow may be a better fit. For troubleshooting, see Help & Support; for the full data-handling explanation, read the Privacy Policy.