Keep PNG when transparency matters
PNG is best for transparency, sharp graphics and screenshots. If transparency is not needed, WebP or JPG may produce a smaller file.
PNG file compression
PNG Compressor Online
PNG files are useful for screenshots, graphics and transparency, but they can be large. LessMB compresses PNG files locally and lets you choose a practical output format.
png compressorpng compresscompress PNGreduce PNG sizePNG file compressor
Select a PNG file and choose your output format below.
TypeAdd fileAdjustDownload
Drag your image here or click to compress
Compress JPG, PNG, GIF, WebP, AVIF, and JXL images in your browser.
What to know before you start
Try WebP or AVIF for smaller output
Modern formats can often reduce file size more than PNG while keeping strong visual quality for web publishing.
Compress without uploading
LessMB processes supported PNG files locally in the browser, which is useful for private screenshots and design assets.
FAQ
PNG Compressor Online FAQ
Short answers for the most common questions about this workflow and LessMB's local browser compression.
No uploadFree toolBrowser-based
Can I compress PNG files for free?
Yes. LessMB can compress supported PNG files locally in your browser.
Should I convert PNG to JPG?
Convert PNG to JPG only when transparency is not needed. For modern websites, WebP can also be a good option.
Will PNG compression always make files smaller?
No. Some PNG files are already optimized, but resizing or switching format can often help.