How much can I compress my images?

Compression depends on image content and quality setting. Photos with lots of detail: 30-50% reduction. Simple graphics or screenshots: 50-70% reduction. Very high-quality photos may only compress 10-30%. The tool shows estimated compression before processing.

Will compression reduce image quality visibly?

At quality settings above 70%, most users won't notice quality loss. At 50-70%, there may be slight quality reduction but images remain usable. Below 50%, quality loss becomes more noticeable. We recommend starting at 80% quality and adjusting based on file size needs.

What's the maximum file size I can compress?

The practical limit is about 50MB per image, limited by browser memory. For best performance, keep images under 20MB. Very large images (over 30MB) may cause browser slowdowns. For larger files, use desktop software like Photoshop or ImageOptim.

Can I compress multiple images at once?

Yes, you can upload and compress multiple images in one session. However, processing happens one at a time. For batch processing of 20+ images, consider desktop tools or command-line tools for better efficiency.

Which image formats are supported?

We support JPG (JPEG), PNG, and WebP formats. GIF images are converted to PNG during compression. For best compression, use JPG for photos and PNG for graphics with transparency. WebP offers the best compression but has limited browser support.

What is the best image format for web compression?

WebP offers the best compression for web use, providing 25-35% smaller files than JPEG at equivalent quality. If WebP is not an option, JPEG is ideal for photos and complex images, while PNG is better for graphics with sharp edges, text, or transparency. Use our Image Convert tool to switch between formats.

Will compressing images affect their dimensions?

No. Image compression only reduces file size by optimizing how the image data is stored. The pixel dimensions (width and height) remain unchanged. If you need to change image dimensions, use our Image Resize tool instead.

How much can I reduce image file sizes?

Typical reductions are 40-80% depending on the original image and quality setting. A 5 MB JPEG photo can often be reduced to 1-2 MB with no visible quality loss. PNG files with large areas of solid color may compress even more. The tool shows a real-time before/after comparison so you can find the ideal balance.

Image Compressor - Reduce Size by 70% Free

When to Use This Tool

Use this when:

You need to compress images for email attachments (reduce 8MB photo to under 5MB)
You're uploading product photos to e-commerce sites with size limits (10MB max)
You want to optimize website images for faster loading (reduce 2MB to 500KB)
You're preparing social media images and need to meet platform size limits
You need to compress screenshots or photos before sharing via messaging apps
You're optimizing images for cloud storage to save space
You want to reduce image file sizes for faster website performance

Don't use this if:

You need professional photo editing or advanced compression algorithms (use desktop software like Photoshop)
You require batch processing of 50+ images (use desktop tools or command-line tools)
You need to compress images larger than 50MB (use desktop software for better performance)
You require lossless compression with zero quality loss (use specialized lossless tools)
You need to compress RAW camera files (convert to JPG/PNG first)

What is an Image Compressor?

An image compressor reduces the file size of images (JPEG, PNG, WebP) while maintaining visual quality. Our browser-based compressor processes images entirely on your device — no files are uploaded to any server, ensuring complete privacy.

Image compression is critical for website performance (Google recommends images under 200 KB for fast page loads), reducing email attachment sizes, saving cloud storage space, and meeting upload limits on social media platforms and content management systems.

This tool is ideal for web developers optimizing site performance, bloggers preparing images for posts, e-commerce sellers compressing product photos for faster loading, social media managers preparing visual content, and photographers sharing proofs with clients. Anyone who works with images regularly can benefit from quick, lossless or lossy compression.

Compared to desktop software like Photoshop (which requires expertise and a subscription) or online compressors like TinyPNG (which upload your images to their servers), PureXio compresses images using the browser's built-in Canvas API and modern compression algorithms — all locally. There are no file count limits per session, no watermarks, and no quality restrictions.

You can adjust the quality slider to find the perfect balance between file size and visual quality, with real-time before/after preview and file size comparison.

Best for: reducing image file sizes by 40–80% for web, email, and storage. Supports JPEG, PNG, WebP. Real-time quality preview. Zero uploads.

How to Compress Images

Upload your image (JPG, PNG, or WebP) by dragging and dropping or clicking to browse

Adjust quality slider (higher = better quality, larger file; lower = smaller file, reduced quality)

Download your compressed image with reduced file size

Common Use Cases

Compress a 8MB product photo to 2MB (75% reduction) for e-commerce listing upload

Reduce a 5MB screenshot to 800KB (84% reduction) for email attachment

Compress 10 social media images (3MB each) to 500KB each (83% reduction) for faster posting

Optimize a 15MB high-resolution photo to 3MB (80% reduction) for website use

Compress multiple vacation photos (5MB each) to 1MB each (80% reduction) for cloud storage

Reduce a 12MB banner image to 2MB (83% reduction) for faster website loading

Compress a 6MB document scan to 1MB (83% reduction) for email sharing

Features

Compress JPG, PNG, and WebP images with quality control

Adjustable quality slider for fine-tuning compression vs. quality

Real-time preview of file size reduction

Maintains image dimensions while reducing file size

Process images up to 50MB (limited by browser memory)

100% private—all compression happens in your browser

No registration or file uploads to servers

Limitations & Constraints

Maximum file size: 50MB per image (browser memory limit). For larger files, use desktop software.

Batch processing: Images processed one at a time. For 20+ images, use desktop tools for efficiency.

RAW camera files not supported. Convert to JPG/PNG first using photo editing software.

Animated GIFs: Only first frame is compressed. Use specialized GIF tools for full animation compression.

Lossless compression not available. Some quality reduction is expected for significant file size reduction.

Troubleshooting

Image compression fails or browser becomes slow

Solution: Large images (over 20MB) can cause browser performance issues. Try compressing smaller images first, or use desktop software for large files. Close other browser tabs to free up memory. If crashes persist, reduce image size using an image editor first. Prevention: Keep images under 20MB for reliable browser-based compression.

Compressed image quality is too low

Solution: Increase the quality slider (try 80-90% for photos). Very low quality settings (below 50%) cause noticeable quality loss. For photos, never go below 70% quality. For graphics/screenshots, 60-70% may be acceptable. Prevention: Start with 80% quality and adjust based on file size needs.

File size reduction is minimal (less than 20%)

Solution: Some images are already well-compressed or have little redundancy. Try lower quality settings (60-70%). Very high-quality photos may not compress much. Consider resizing the image first if dimensions are larger than needed. Prevention: Check if image is already optimized. Very detailed photos compress less than simple graphics.

Compressed image won't upload to website or form

Solution: Verify the file format is supported (JPG, PNG, WebP). Some sites don't accept WebP—convert to JPG or PNG. Check file size is still under the limit. Ensure image dimensions meet requirements (some sites have dimension limits). Prevention: Check website requirements before compression. Use JPG for maximum compatibility.

Animated GIF stops animating after compression

Solution: Our tool compresses only the first frame of GIFs. For animated GIF compression, use specialized GIF optimization tools. Alternatively, extract frames and compress individually, then reassemble. Prevention: Use GIF-specific compression tools for animated GIFs.