Image Compressor

Compress images client-side

Quality:80%
Max Width:

Click to upload an image

PNG, JPG, GIF up to 5.0 MB

About Image Compression

This tool uses the Canvas API to resize and compress images directly in your browser. Images are converted to JPEG format for optimal compression. No data is sent to any server.

About Image Compressor & Resizer

1What is it?

Compress and resize images directly in your browser without uploading to any server. Reduce file sizes for faster website loading, email attachments, or storage optimization. Adjust quality and maximum dimensions to find the perfect balance between size and visual quality.

2Use Cases

  • Optimize images for faster website loading
  • Reduce image size for email attachments
  • Prepare images for social media upload
  • Compress photos for cloud storage
  • Batch process multiple images
  • Resize images for specific dimensions
  • Convert images to optimized JPEG

?Frequently Asked Questions

Is my image uploaded anywhere?

No! All compression happens entirely in your browser using the HTML5 Canvas API. Your images never leave your device. This makes the tool completely private and works even offline.

What's the best quality setting?

For web images, 75-85% quality usually provides a good balance of file size and visual quality. For photography where detail matters, use 85-95%. Below 70%, you may notice visible artifacts.

Why is JPEG used for output?

JPEG offers the best compression for photographs and complex images. For images with transparency, consider converting to PNG after. For simple graphics with few colors, PNG might be smaller.

Can I compress PNG or GIF files?

The tool can read PNG and GIF files, but outputs as JPEG. This means transparency will be lost (replaced with white background). For PNG optimization, specialized PNG tools are more effective.

What does the max dimension setting do?

It sets the maximum width and height. If your image exceeds this, it's proportionally resized. A 4000x3000 image with max 1920 becomes 1920x1440. This significantly reduces file size for large camera photos.