Yes, our image compression tool is 100% free to use with no hidden costs, no watermarks, and no file limits. Compress as many images as you need, whenever you need.

Are my photos uploaded to a server?

No. For your privacy and security, all image compression is performed locally in your browser using WebAssembly technology. Your images never leave your device and are never uploaded to our servers or any third party.

How much can I reduce the file size?

It depends on the image format and content, but you can typically reduce file sizes by 50-80% for JPEG images and 20-60% for PNG images with minimal visual quality loss. Some images can be compressed even more aggressively depending on your quality requirements.

What's the difference between lossy and lossless compression?

Lossy compression (used in JPEG) removes data that's less visible to human eyes, achieving dramatic file size reduction but with some quality loss. Lossless compression (PNG) preserves every pixel perfectly but achieves smaller size reductions. Choose based on whether you need perfect quality (lossless) or smaller files (lossy).

Will compression affect image quality?

Yes, but you control how much. Our tool lets you adjust the quality slider to balance file size versus visual quality. Higher quality settings (80-90%) produce larger files with minimal visual loss. Lower settings (50-70%) create smaller files but may introduce visible compression artifacts. Preview before downloading to ensure the result meets your needs.

What quality setting should I use?

For most web use, 75-85% quality provides excellent results. For print materials, use 90-95%. For thumbnails or backgrounds where slight quality loss is acceptable, 60-75% works well. Start with 80% and adjust based on the preview comparison between original and compressed versions.

Image Compressor

Reduce image file size by up to 90% while maintaining visual quality.

Upload Image

Drag & drop images

or click to browse (max 5MB each)

Professional Image Compression Features

Built for developers, designers, and content creators who need speed and quality.

Dramatic File Size Reduction

Reduce image file sizes by 50-90% while maintaining visual quality. Perfect for faster website loading and reduced storage costs.

Lightning Fast Compression

Compress images instantly using WebAssembly technology. No upload delays, no server queues - everything happens in milliseconds.

100% Client-Side Secure

Your images never leave your device. All compression happens locally in your browser's secure environment, guaranteeing complete privacy.

Smart Quality Balance

Intelligent compression algorithms analyze your image to find the optimal balance between file size reduction and visual quality preservation.

Multiple Format Support

Compress JPG, PNG, WebP, BMP, and other popular image formats. Each format is optimized with format-specific compression techniques.

Web Performance Optimized

Create perfectly optimized images for websites, blogs, and web apps. Improve page speed scores and user experience with smaller file sizes.

Image Compression Best Practices

Expert tips to ensure your compressed images look sharp and perform well everywhere.

Lossy vs. Lossless Compression

Lossy compression (JPEG) removes imperceptible data for dramatic size reduction. Lossless (PNG) preserves every pixel perfectly. For photos, lossy is usually best. For logos, graphics, and screenshots, use lossless to maintain crisp edges and text.

Quality Sweet Spot

For JPEG compression, quality between 75-85% offers the best balance of file size and visual quality. Below 70% introduces noticeable artifacts. Above 90% increases file size with minimal visual improvement. Start at 80% and adjust based on your needs.

When to Compress Before Upload

Always compress images before uploading to websites, social media, or cloud storage. Pre-compression gives you control over quality and prevents platforms from applying harsh automatic compression that degrades your images unpredictably.

Format-Specific Optimization

JPEG is best for photographs with gradients and natural scenes. PNG excels at graphics, logos, and images requiring transparency. WebP offers superior compression for both, making it ideal for modern web projects when browser support isn't a concern.

How to Compress Images Online

Simple steps to optimize your images in seconds.

Upload Image

Drag and drop your image or click to browse from your device. Supports JPG, PNG, WebP, and most common image formats.

Adjust Quality Settings

Use the quality slider to set your desired compression level. Lower percentages create smaller files with more quality loss. Preview in real-time to find the perfect balance.

Compress & Preview

Click 'Compress Image' to process your file. Compare the original and compressed versions side-by-side to verify the quality meets your requirements.

Download Optimized Image

Once satisfied with the result, click Download to save your optimized image. File size savings are displayed to show your compression results.

Frequently Asked Questions

Common questions about image compression.

Image Compressor

Professional Image Compression Features

Dramatic File Size Reduction

Lightning Fast Compression

100% Client-Side Secure

Smart Quality Balance

Multiple Format Support

Web Performance Optimized

Image Compression Best Practices

Lossy vs. Lossless Compression

Quality Sweet Spot

When to Compress Before Upload

Format-Specific Optimization

How to Compress Images Online

Upload Image

Adjust Quality Settings

Compress & Preview

Download Optimized Image

Frequently Asked Questions

Is it free to use?

Are my photos uploaded to a server?

How much can I reduce the file size?

What's the difference between lossy and lossless compression?

Will compression affect image quality?

What quality setting should I use?