Compress Images Online Free — Reduce JPG, PNG, WebP Size Without Quality Loss

Why do we need to compress images?

Images take up 60-80% of a website’s size. Unoptimized images make the page load slowly, negatively affecting user experience and Google SEO rankings.

With Metoolzy Image Compressor, you can reduce up to 80% of the image size without affecting visual quality — completely free, processed in the browser.

Highlight Features

• Supports JPG, PNG, WebP — The 3 most popular image formats on the web
• Batch processing — Compress up to 50 images at once
• Custom quality — Drag the quality slider from 10-100%
• Compare preview — Preview before/after compression
• Download ZIP — Download all compressed images in 1 ZIP file
• 100% Client-side — Images are not uploaded to a server, ensuring privacy

How to compress images

1. Visit Image Compressor
2. Drag and drop images or select files (JPG/PNG/WebP)
3. Adjust the quality level (default 80% — best balance)
4. Click “Compress”
5. View results: original size → compressed size
6. Click “Download” or “Download All (ZIP)”

Recommended Compression Levels

Purpose	Quality	Size reduction
Web / blog	75-80%	~60-70%
Social media	80-85%	~50-60%
Email attachment	60-70%	~70-80%
Original backup	90-95%	~20-30%

Comparison with other compression tools

Feature	Metoolzy	TinyPNG	Squoosh
Free	✅ Unlimited	❌ 500 images/month	✅
Batch	✅ 50 images	✅ 20 images	❌ 1 image
Client-side	✅	❌ Upload server	✅
ZIP download	✅	✅	❌
WebP support	✅	✅	✅

Frequently Asked Questions

Does image compression lose quality?

At 75-85%, the difference is almost unnoticeable to the naked eye. Only when dropping below 50% does it become obvious.

Are my images uploaded to the server?

No. All processing happens in the browser using the Canvas API. Your images never leave your device.

Is AVIF supported?

AVIF compression is not supported yet. You can use Image Converter to convert to AVIF.

👉 Compress images for free now →

See more: Online image resizer · Image format converter · Image to Base64