⚡ Fastest Image Compressor Online

Compress Photos & Images
Without Losing Quality

Reduce JPG, PNG, WebP & GIF file sizes up to 90% — free, instant, no upload to servers. Your images never leave your browser. Batch process dozens of photos at once.

90%
Size Reduction
0s
Server Upload
4
Formats Supported
∞
Free Forever
📸
Drop your images here
or click to browse files from your device
JPG PNG WebP GIF BMP SVG
80%
Keep aspect ratio
Strip EXIF metadata
Progressive loading
📋 Image Queue
Compressing images… 0%

✅ Compression Complete!

—
Original Size
—
Compressed Size
—
Space Saved
—
Reduction

🔍 Before / After Comparison

Original image
Compressed image
↔
ORIGINAL COMPRESSED
WHY COMPRESSNOW

Everything you need to compress images

🔒
100% Private & Secure
Images are processed entirely in your browser using JavaScript Canvas API. Nothing is ever uploaded to any server.
⚡
Lightning Fast
Compress dozens of images in seconds. No waiting for server roundtrips — everything happens locally on your device.
📦
Batch Compression
Upload and compress up to 100 images at once. Download them all as a single ZIP file with one click.
🎨
Multiple Formats
Supports JPG, PNG, WebP, GIF, BMP. Convert between formats while compressing for maximum savings.
📐
Smart Resize
Resize images to exact dimensions or by percentage while compressing. Maintain aspect ratio automatically.
🔍
Before/After Preview
Drag the comparison slider to see the quality difference between your original and compressed image side by side.
SUPPORTED FORMATS

Compress any image format

HOW IT WORKS

Compress in 3 simple steps

01
Upload Images
Drag & drop your JPG, PNG, or WebP images into the upload zone, or click to select files from your device.
02
Set Options
Adjust quality, output format, and resize dimensions. Preview your choices with the live comparison slider.
03
Download
Click Compress, then download individual files or all images as a ZIP. Done in seconds, completely free.
FAQ

Frequently asked questions

Does compressing an image reduce its quality? +

Lossy compression (JPEG) slightly reduces quality, but at 70–85% quality settings the difference is invisible to the human eye. PNG uses lossless compression, so there's zero quality loss.

Is my image uploaded to your servers? +

No. CompressNow processes all images 100% locally in your browser using JavaScript. Your files never leave your device and we never see them.

How much can I reduce my image size? +

Typical reductions are 50–90% depending on image type and quality setting. Converting PNG to WebP often gives the best compression ratios.

What is the best format for web images? +

WebP is the best format for web — it's 30% smaller than JPEG and 80% smaller than PNG at the same quality. All modern browsers support it.

Can I compress photos for WhatsApp and Instagram? +

Yes! Set quality to 70–80% and resize to max 1280px wide. This gives you small file sizes perfect for sharing on WhatsApp, Instagram, and social media.

Is there a file size or image number limit? +

Since everything runs in your browser, limits depend on your device's RAM. Most modern devices handle up to 100 images at once without issues.