How to reduce image file size (without losing quality)

Three levers shrink an image: a lighter format, smaller dimensions and lower quality. Combine them for the best result.

1. Convert to WEBP

Re-saving a JPG or PNG as WEBP usually cuts 25–50% of the size with no visible loss. It is the single easiest win for web images.

2. Resize the dimensions

A 4000-pixel photo is overkill for a web page. Resize the longest side to what you actually display — often 1200–1600 px. File size falls roughly with the square of the dimensions, so halving the width cuts size by about 75%.

3. Lower the quality a little

For JPG and WEBP, quality around 70–80 is usually indistinguishable from 100 but far smaller. Nudge the quality slider down and watch the “saved” figure.

Do it now

Our free image compressor and resizer do all three in your browser — nothing is uploaded to a server.