About the Image Compressor
Large images slow down websites, bloat email attachments and get rejected by upload forms that have a size limit. This free image compressor shrinks your photos to a fraction of their original size while keeping them looking sharp.
Compress several images at once, choose the output format and fine-tune the quality slider while you watch the new file size update. Everything happens inside your browser. Your files are never uploaded to a server, so they stay completely private — and it is fast, because there is nothing to upload or download.
How to use the Image Compressor
- Click “Choose images” or drag your JPG, PNG or WebP files onto the box.
- Pick an output format. WebP usually gives the smallest file; JPEG works everywhere.
- Adjust the quality slider. 60–80% is the sweet spot for most photos.
- Click “Download” next to each compressed image.
Frequently asked questions
Will compressing reduce image quality?
Lossy compression removes detail the eye rarely notices. At 70–80% quality most people cannot see a difference, while the file is often 60–90% smaller.
Are my images uploaded anywhere?
No. Compression runs inside your browser using the HTML canvas. Your images never leave your device.
Which format gives the smallest file?
WebP is typically 25–35% smaller than JPEG at the same visual quality and is supported by every modern browser.
How do I compress an image to under 100 KB or 200 KB?
Lower the quality slider until the new size shown is under your limit. If it is still too big, resize the image to smaller dimensions first with our Image Resizer.