About Image Compression
Image compression is the process of reducing the file size of an image while trying to maintain its visual quality. This is useful for:
- Faster website loading times
- Reducing storage space
- Saving bandwidth when sharing images
- Improving user experience on mobile devices
How Our Image Compressor Works
Our image compressor uses browser-based technologies to compress your images locally:
- Your image is loaded into the browser
- The image is drawn onto an HTML5 Canvas element
- The canvas is exported as a compressed image with your chosen settings
- The compressed image is made available for download
All processing happens in your browser - your images are never uploaded to our servers, ensuring your privacy.
Compression Settings
Quality Level
The quality slider controls how much compression is applied:
- Higher quality (80-100%): Minimal visual difference, less compression
- Medium quality (50-80%): Good balance between quality and file size
- Lower quality (below 50%): Noticeable quality loss, maximum compression
Output Format
Different image formats have different compression characteristics:
- JPEG: Best for photographs and complex images with many colors
- PNG: Best for images with transparency or sharp edges (logos, text, screenshots)
- WebP: Modern format that provides better compression than both JPEG and PNG, but may not be supported by all software
Maximum Width
Resizing large images is one of the most effective ways to reduce file size. Setting a maximum width will resize the image proportionally if it exceeds that width.
Tips for Best Results
- Start with a high-quality original image for best results
- Use JPEG for photos, PNG for graphics with transparency
- Try WebP for the best compression if your target platform supports it
- Resize large images to the maximum dimensions you need
- For web images, a quality setting of 70-80% usually provides a good balance