Online Image Compressor

An image compressor is a tool that reduces the file size of digital images while while preserving visual quality. PixiLynx is a free browser-based image compressor that runs entirely in your browser.

Upload your JPG, PNG, or WebP images, adjust the compression settings if needed, and click “Compress All Images”. Once the process is complete, you can download the optimized files individually or as a ZIP archive.

Yes. Our image compressor is completely free to use. There are no subscriptions, hidden fees, registration requirements, file limits, or daily usage limits.

PixiLynx supports JPG, JPEG, PNG, and WebP images. PNG images are automatically converted to JPG by default for the best balance of image quality and file size. Enable Web Optimization to convert images to WebP instead, achieving even smaller files while preserving PNG transparency.

PixiLynx automatically converts PNG images to JPG by default because JPG usually provides a much better balance between image quality and file size for most images. If you need to preserve transparency, simply enable Web Optimization to convert PNG images to WebP instead.

Small file size reductions are often possible without noticeable quality loss. Larger reductions usually require some level of compression. Our image compressor is optimized to achieve the best possible balance between image quality and file size.

The quality setting affects image quality, but file size also depends on the image format and image content.

For example, a detailed photograph may become much smaller after compression, while a simple logo or graphic may not shrink significantly.

There is no single answer for every image, but WebP often provides the best balance between image quality and file size. By default, PixiLynx keeps JPG and WebP images in their original formats, while PNG images are automatically converted to JPG for more efficient compression. If Web Optimization is enabled, supported images are converted to WebP instead for even smaller file sizes while preserving PNG transparency.

JPG is best for photographs and offers excellent compression with small file sizes. PNG is ideal for graphics and transparent backgrounds but often results in larger files. WebP is a modern format that typically provides better compression than both JPG and PNG while maintaining high image quality.

For most website photos, JPG or WebP are excellent choices. If your image requires transparency, WebP is usually the most efficient option. Our image compressor automatically converts PNG images to JPG by default for better compression, or to WebP when Web Optimization is enabled, preserving transparency while achieving even smaller file sizes.