Free Image Compressor Online
Compress JPEG, PNG and WebP images instantly. Adjust quality, see file size savings, and download — all in your browser. Files never leave your device.
JPEG · PNG · WebP · Max 20MB
How to Compress Images Online for Free
Our free image compressor reduces JPEG, PNG and WebP file sizes in seconds — with no software to install and no files uploaded to any server. It's ideal for compressing images for websites, email attachments, WhatsApp, social media and storage.
Upload your image, set the quality slider (we recommend 75–85% for photos), choose your output format, and click Compress. You'll instantly see how much space you've saved, and download the compressed file with one click. The before/after preview lets you verify quality before saving.
Choosing the Right Quality Setting
| Quality | Best For | Typical Size Saving |
|---|---|---|
| 85–100% | Print, professional photography, archiving | 10–30% |
| 75–85% | Websites, social media, email (recommended) | 50–70% |
| 60–75% | Thumbnails, previews, fast-loading pages | 70–80% |
| Under 60% | Very small files where quality is less important | 80–90% |
Which Format Should I Choose?
JPEG is the universal choice — works everywhere, excellent for photos. WebP gives you 25–35% smaller files than JPEG at the same visual quality — ideal for websites in 2026. PNG is lossless and supports transparency — use for logos, screenshots and graphics.
Why Image Compression Matters for Websites
Google's Core Web Vitals measure page speed, and images are the single biggest factor in slow load times. A typical uncompressed photo is 3–8MB. Compressed to 80% JPEG, it becomes 200–500KB — loading 10× faster. This directly improves your Google search rankings and reduces bounce rate.
Compress Images for Email Attachments
Gmail limits attachments to 25MB and Outlook to 20MB. More practically, large images frustrate recipients on mobile data. Compress to under 500KB for single images and under 5MB for multiple attachments. Use 70% quality JPEG — the recipient likely views it on a 72–96 DPI screen where full quality is wasted.