Image tool

Image Compressor

Reduce image file size locally with an adjustable quality setting.

Practical guide

How to use Image Compressor

Image Compressor reduces the size of a selected image by re-encoding it as JPEG or WebP with adjustable quality. It is intended for web uploads, messages, documentation, and other cases where a smaller file matters more than lossless preservation.

Step by step

  1. Choose an image and select JPEG or WebP.
  2. Adjust quality, then compress and compare the original and result sizes.
  3. Inspect the preview at useful zoom levels before downloading the smaller file.

Example

Input2.4 MB JPEG at quality 78
ResultA new JPEG or WebP with its measured size and percentage change

How it works

The browser decodes the source, draws it to a Canvas at its original dimensions, and encodes new bytes using the selected format and quality setting.

Important limitations

  • Compression can introduce blur, ringing, banding, or color shifts.
  • A small or already optimized image may become larger after another conversion.

Frequently asked questions

Which format should I choose?

WebP often provides smaller web files; JPEG remains widely compatible for photographs. Neither is ideal for every graphic.

Does quality change image dimensions?

No. This tool preserves width and height; use Image Resizer to change dimensions.

Color Spectrum Extract dominant colors, inspect pixels, and export palettes from an image. Image Resizer Resize images to exact dimensions while optionally preserving aspect ratio. Image Format Converter Convert images between PNG, JPEG, and WebP entirely in the browser.