LightPIX is a free online PNG compressor that reduces PNG file size by up to 80% without visible quality loss. PNG is a lossless format prized for crisp edges and full transparency, which makes it ideal for logos, icons, screenshots and UI graphics — but those same qualities make PNG files large. LightPIX squeezes them down while preserving the transparent background.
Drop up to 20 PNGs at once (16 MB each), fine-tune the quality if you like, and download them individually or as a single ZIP. Every PNG comes back as a PNG with its transparency intact — LightPIX never changes your file format. Your images are processed securely over HTTPS and deleted right after compression — nothing is ever stored.
Want it automatic? Install the free LightPIX WordPress plugin to compress every PNG the moment it is uploaded to your Media Library.
Drag & drop, click to browse, or paste a screenshot. PNG, JPEG and WebP are supported — up to 16 MB each and up to 20 at once.
Move the quality slider if you want a smaller file or higher quality. The default already balances size and clarity.
Click Compress all, then download each image or the whole batch as a single ZIP.
Yes — LightPIX preserves the alpha (transparent) channel, so logos and icons stay clean on any background.
Yes — LightPIX keeps your image in its original format, so a PNG stays a PNG (with transparency intact). You always get back the format you uploaded.
Yes — LightPIX is completely free, with no signup, no watermark and no monthly limits.
Yes. Images are sent over HTTPS, compressed, and deleted immediately after — nothing is stored on our servers.
Typically up to 80% smaller, depending on the image, with no visible loss in quality.
Yes — compress up to 20 images in one batch and download them individually or as a single ZIP.
No — it runs in your browser. For automatic compression on your website, there is also a free LightPIX WordPress plugin.
Yes — LightPIX works in any modern browser on both desktop and mobile.