Image Compressor
Shrink the file size of your photos while keeping great quality — processed locally in your browser.
Click to upload or drag and drop
JPG, PNG or WebP — any number of files
Compressing…
🔒 Your images are processed entirely on your device and never leave your browser.
✅ Done!
How it works
Upload your JPG, PNG or WebP images.
Pick a compression level and output format.
Click compress — see the size reduction instantly.
Download the optimized files.
Compress JPG, PNG and WebP images online without losing quality
Large photos slow down websites, fill up phone storage and get rejected by email and upload forms. An image compressor reduces the file size of a picture while keeping it looking almost identical to the original. This free online image compressor lets you reduce image size for JPG, PNG and WebP files directly in your browser, with a choice of compression levels from "Low" (best quality) to "Extreme" (smallest file).
How image compression works
Photos are usually saved as JPG, which uses lossy compression: the encoder throws away detail the human eye barely notices. Lowering the quality setting from 100% to about 70–80% often shrinks a photo by 60–80% with no visible difference. Converting a heavy PNG screenshot to JPG or WebP can save even more.
How to reduce the size of a photo
- Upload one or many JPG, PNG or WebP images.
- Pick a compression level and an output format (JPG for photos, WebP for websites, PNG for graphics).
- Click Compress images and compare the "before" and "after" sizes.
- Download the files individually or as a single ZIP.
Which format should you choose?
- JPG — best for photographs and the most widely supported.
- WebP — about 25–35% smaller than JPG at the same quality and supported by every modern browser, ideal for faster websites and better Core Web Vitals.
- PNG — lossless, best for logos, screenshots and images with transparency.
Private, unlimited and free
Your images are compressed locally on your device, so nothing is uploaded and there is no daily limit. If a website asks for a specific file size, use Compress Image to Exact KB; if you also need different dimensions, try the image resizer.
FAQ
Will compressing reduce image quality?
Some quality is traded for a smaller file size. "Low" compression is visually lossless for most photos; "Extreme" is best for thumbnails or when file size matters most.
What's the difference between this and the Resizer?
This tool keeps the original pixel dimensions and reduces quality/format overhead. Use the Image Resizer if you also need to change width/height.
Need an exact file size like 100KB?
Use Compress Image to Exact KB to automatically hit a target size.