Image Compressor
Compress JPEG and PNG images in your browser. No upload to any server — 100% private.
Free Online Image Compressor
The Toolts Image Compressor reduces the file size of your images directly in your browser using the HTML5 Canvas API. No images are uploaded to any server, making this a completely private tool. Adjust the quality slider to balance between file size reduction and image quality.
How It Works
The compressor loads your image into an HTML5 Canvas element, then exports it at the specified quality level. JPEG compression works by discarding visual information that is less noticeable to the human eye. Lower quality settings produce smaller files but may introduce visible artifacts. A quality of 70-80% typically provides a good balance between size reduction and visual quality.
Why Compress Images?
Image compression is essential for web performance. Smaller images load faster, reduce bandwidth usage, and improve search engine rankings (Google considers page speed in its ranking algorithm). Compressed images are also important for email attachments, social media uploads, and storage optimization on mobile devices.