Image Compressor
Reduce image file size.
Image Compressor at a glance
Image Compressor is a free online image tool you can use right now to reduce image file size โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Image Tools
Choose an image to compress. Everything happens in your browser.
About Image Compressor
The Image Compressor makes photos dramatically smaller while keeping them looking the same. Drop an image in, adjust the quality slider, and watch the file size update live next to a preview so you can see exactly what you're trading away before you download.
The saving comes from JPEG's quality setting, and the curve is steeply in your favour: dropping from 100% to around 80% typically cuts file size by 60-70% with almost no visible difference, because the discarded detail sits in frequencies your eye barely registers. Below about 60% you'll start to see blocking around sharp edges and text.
Smaller images are the single easiest page-speed win on most websites, and they matter for Core Web Vitals. They're also the difference between an email attachment that sends and one that bounces.
How to use Image Compressor
- Enter your input.
- Get your result instantly.
- Copy or reuse it however you like.
Frequently asked questions
What quality setting should I use?
80% is the sweet spot for photos โ usually a 60-70% size reduction with no visible loss. Use 90% for images with text or sharp graphics, and don't go below 60% unless file size really matters more than looks.
Does compressing reduce the image dimensions?
No โ the pixel dimensions stay the same. It's the amount of data used to describe those pixels that shrinks. Use the Image Resizer if you want fewer pixels.
Can I compress PNG images?
Yes, though PNG is lossless and compresses less dramatically. For photographs, converting to JPEG usually saves far more than compressing the PNG.
Are my images uploaded?
No. Compression happens in your browser using a canvas, so your photos never leave your device.