Image Compressor: Reduce JPEG, PNG, WebP File Size
Compress images locally in your browser with a quality slider. No server upload, instant download.
Try the free online tool mentioned in this guide:Image Compressor
Why compress images?
Images are often the largest assets on web pages. Compression reduces file size, improving:
- Page load speed — faster downloads, better Core Web Vitals.
- Bandwidth costs — less data served = lower bills.
- Mobile experience — smaller files for users on slow networks.
- SEO — faster pages rank better.
Image formats and compression
JPEG — Lossy compression. Photos compress well (good for photos).
PNG — Lossless compression. Best for graphics and transparency.
WebP — Modern format, smaller than JPEG/PNG. Not all browsers support it yet.
AVIF — Newer, even smaller, but limited browser support.
Lossy vs lossless
Lossy — Removes some data but is imperceptible. JPEG quality slider trades quality for size. 70-80% quality is usually ideal.
Lossless — Keeps all data, compresses redundancy. PNG is lossless; file sizes are larger.
Compression workflow
1. Upload image — drag and drop or select file. 2. Set quality — slider from 0 (tiny, ugly) to 100 (large, perfect). 3. Preview — see the result side by side. 4. Download — save compressed version to your device.
Frequently asked questions
What's the ideal quality setting?
70-85% is typical. Check visually; compression artifacts become noticeable below 60%.
Can I batch compress multiple images?
Current version is one-at-a-time. Use ImageMagick, ImageOptim, or bulk tools for batch compression.
Should I use WebP?
Yes, for new projects. Provide JPEG fallback for old browsers. Use <picture> tag for browser-specific serving.