What makes PNG different
PNG is a lossless format: it stores every pixel exactly. That's why it's the right choice for screenshots, logos, icons, charts and diagrams, where text and edges must stay razor sharp, and why it supports transparency. The downside is size. A full-screen screenshot or a large graphic exported from a design tool can weigh several megabytes.
You can't make a PNG lighter by simply “lowering the quality” the way you can with JPEG. Instead, ConvertirDocs reduces the number of colors.
How color palettes save space
ConvertirDocs converts your PNG to a palette of up to 256 colors. Screenshots, interfaces, flat illustrations and charts usually use far fewer distinct colors than that, so they look the same afterwards but take much less space. Text in a screenshot stays crisp because nothing is blurred; the image simply describes its colors more compactly.
Transparency is kept as long as the output remains PNG or WEBP. That makes this the right way to lighten logos and icons for a website, where a transparent background is essential.
Photos saved as PNG
Sometimes photos end up as PNG: exported from an editor, pasted from the clipboard, or saved from a website. A photo has thousands of subtle shades, too many for a small palette, so it stays heavy even after compression. For those, choose JPG or WEBP as the output format. The file usually becomes many times lighter with no visible difference on screen.
Keep in mind that JPG has no transparency: transparent areas are filled with white. If you need both a photo and transparency, WEBP is the option to try.
Typical uses
Lighter screenshots for documentation, tutorials and support tickets. Logos and icons that load faster on a website. Diagrams and charts for a presentation or a report that's getting too heavy. Graphics for an online store or a newsletter.
If the form or site sets a limit, use the target size option and type it in KB. ConvertirDocs looks for the best result that fits, reduces the dimensions if needed, and tells you if the target couldn't be reached. If compression wouldn't make the file smaller, you get your original back.
Your images stay with you
Compression happens in your browser; nothing is uploaded or stored. Metadata is removed from the result. It's free, with no account, no daily cap and no watermark.