convertimage

Image tool · runs in your browser

Compress images

Shrink one image or a whole batch to a smaller file size, free and private — your files never leave your device.

Reviewed by the convertimage team · Updated June 2026

Drop images here

or — process as many as you like, all at once.

Processed on your device · nothing is uploaded

Output
Max size

Steps

How to compress images

  1. 01

    Add your images

    Drag images into the box above, or browse to select them.

  2. 02

    Choose settings

    Pick an output format and quality, and optionally cap the largest dimension.

  3. 03

    Compress and download

    Press Compress, then save each file or download them all as a ZIP.

Questions

Frequently asked

How much smaller will my images get?
It depends on the image and quality setting, but converting to WebP at 80% quality typically reduces file size by 30–70% with no visible difference.
Does compressing reduce quality?
Compression is lossy, so very low settings can soften detail. At the default quality the change is rarely visible, and you can raise the slider for higher fidelity.
Why is the output WebP by default?
WebP compresses smaller than JPG or PNG at the same quality and keeps transparency, so it produces the smallest files. You can switch the output to JPG if you prefer.
Are my images uploaded to compress them?
No. Compression runs entirely in your browser — your images never leave your device.

Want to learn more? Read how to reduce image file size, or resize your images.