Compress Image Online Free: JPG, PNG & WebP, Adjustable Quality
Adjust image compression while reviewing the preview and measured output size. This browser-based image compressor handles JPG, PNG, and WebP files: all compressed locally on your device with supported local media processing required. Free, private, instant.
How to Compress Images Online (3 Steps)
- Upload your image: Select any JPG, PNG, or WebP file from your device.
- Compression runs in your browser: Smart compression algorithms reduce file size while maintaining visual quality.
- Download the compressed image: Save your smaller image file with timing that varies by browser and device. No wait, no queue.
Why Compress Images?
Large image files slow down websites, fill up storage, and cause problems when sharing. Compressing images:
- Speeds up websites: Compressed images load faster, improving Google Core Web Vitals and SEO rankings
- Passes upload limits: Many platforms (WordPress, Shopify, email) have file size limits. Compressed images upload without errors
- Saves storage: Compress hundreds of product photos or portfolio images to save gigabytes of space
- Reduces bandwidth costs: Smaller images use less CDN bandwidth for high-traffic websites
JPG, PNG, and WebP Compression Explained
- JPG compression: Lossy. Very effective for photographs. Output size and appearance vary by source image and settings; compare the preview and measured result before download
- PNG compression: Lossless. Great for logos, screenshots, and graphics. No pixel data is lost
- WebP compression: Google's modern format with lossy and lossless modes; compare the preview and measured output size for each source image
Supported media processing runs on your device, and file contents are not uploaded for processing. Site analytics and the assistant are separate. Core access currently requires no signup; tool-specific limits may apply.
Frequently Asked Questions
What is a good compression level for web images?
A moderate setting is a good starting point for web use. Preview and compare output size versus image clarity before finalizing.
Can I keep transparency while compressing?
Yes, formats like PNG and WebP can preserve transparency. JPG does not support transparent backgrounds.
Does compression change image dimensions?
Compression usually changes file size, not width and height. Use Resize Image if you also need to change dimensions.
Is Compress Image free to use?
Yes, Compress Image on Pixlane currently requires no signup for core use; outputs add no Pixlane watermark; tool-specific limits may apply. No account, no signup, and no watermark on downloaded files.
What compression format gives the smallest file size?
WebP typically produces the smallest file size while maintaining good visual quality. For maximum compatibility, use JPG with a quality setting between 70-85.
Will compression change the image dimensions?
No. Compression only reduces file size. To change width or height, use the Resize Image tool.