Reduce image file size without losing visible quality. Perfect for websites, emails and social media.
JPG, PNG, WebP supported
Large images slow down websites, increase email bounce rates, and use unnecessary storage. Compressing images at 70–80% quality typically reduces file size by 50–70% with no visible quality difference to the human eye.
The Image Compressor reduces the file size of JPG, PNG, and WebP images using browser-based compression. Drag and drop your image, adjust the quality slider, and download the compressed version instantly. Everything runs locally — your image never leaves your device.
| Quality Setting | Typical Size Reduction | Visual Quality |
|---|---|---|
| 90% | 20-30% | Excellent — virtually identical to original |
| 80% (recommended) | 40-60% | Very good — no visible difference to most people |
| 70% | 55-70% | Good — slight compression visible on close inspection |
| 60% | 65-75% | Acceptable — compression visible, especially around text |
| 50% or lower | 75-85% | Noticeable quality loss — use only for thumbnails |
| Use Case | Suggested Quality | Why |
|---|---|---|
| Website / blog images | 75-80% | Fast page loads, no visible loss at normal screen size |
| Email attachments | 70-80% | Stays under most mail-provider attachment limits |
| Social media uploads | 75-85% | Platforms recompress on upload anyway — no benefit to sending the original |
| Print or professional use | 90-95% | Preserve maximum detail; file size is a lower priority |
| Thumbnails / previews | 50-65% | Small display size hides compression artefacts |
What image quality setting should I use?
80% is the recommended starting point for most purposes — it reduces file size by approximately 50-60% while maintaining excellent visual quality that most people cannot distinguish from the original. For product photos or professional images, use 85-90%. For thumbnails or small preview images, 60-70% is acceptable.
Does compressing an image reduce its dimensions?
This tool reduces file size while keeping the same image dimensions (width × height). Only the data representing each pixel is compressed, not the number of pixels. To reduce dimensions (resize), use the browser's built-in screenshot or photo editing tool, or a dedicated resize tool.
Will compressing a PNG with a transparent background ruin it?
This tool outputs JPG, which doesn't support transparency — transparent areas are filled with white before compression, not left black or broken. If you need to keep transparency, don't compress that image; use the Image Converter to change formats instead, or keep the original PNG.
How do I compress an image to a specific file size, like under 1MB or 100KB?
Drag the quality slider down and watch the live "Compressed" figure update — there's no direct "target size" input, but you can quickly find the quality level that lands under your limit by watching the number as you adjust.
Can I download, print or email the compressed image?
Yes — Download Compressed Image saves the file, Print opens it in a print-ready tab (from which you can also choose Save as PDF), and Email sends it via your device's share sheet where supported, or your mail app with a reminder to attach the downloaded file.