Convert PNG to PDF in your browser
Every pixel kept exactly, with no quality setting to get wrong and nothing thrown away. No upload, no account, no watermark.
or browse your device. Everything is processed on this device
No PNG to hand?
The document is mostly the image inside it. Cutting the PNG palette first is lossless on a screenshot and often halves it, and the PDF then follows it down.
Compress the PNG firstHow to convert PNG to PDF
It is read straight off your disk into this tab. There is no upload endpoint in this site for it to go to.
A4 or US Letter if it is going to be printed or attached to something official. Match the image if it is only ever going to be looked at on a screen.
One PNG becomes one single page PDF. Drop several and you get one PDF each, not one document with several pages.
Lossless, but not the same bytes
A PDF has no way to hold a PNG as a PNG. There is a native stream type for JPEG, which is why the JPG page can promise your exact file back inside the document, and there is nothing equivalent for PNG. So the image is decompressed to raw pixels and packed again losslessly on the way in.
What that means in practice: every pixel survives exactly, so a screenshot is as sharp in the PDF as it was on your screen and no quality is lost anywhere. What does not survive is the byte count. The file will be a little larger or a little smaller than the PNG depending on how well each format packed that particular image, and neither direction means anything went wrong. Any tool that tells you a PDF of your PNG is exactly the same size has not looked.
The other thing left behind is anything the PNG carried that was not a pixel. Text chunks, an embedded colour profile note, EXIF written by an export tool: none of it crosses, because only the pixels are read. For a screenshot that is nothing at all. For a photo exported as a PNG it means the location and camera details do not travel into a document you might email, which is the safer default and is not something you can switch off here.
The one setting that does discard pixels is the width cap. Capping the width redraws the image smaller, and those pixels are gone. That is a fair trade when a form has a size limit, and it is worth knowing it is the only control on this page that costs you anything.
PNG to PDF FAQ
Does converting to PDF reduce the quality?
No. Every pixel is preserved exactly. A PDF cannot store a PNG as a PNG, so the image is decompressed and packed again losslessly on the way in, which changes the file size but not a single pixel. The only control here that actually discards anything is the width cap, which redraws the image smaller.
Can I put several PNGs into one PDF?
Not yet. Each image you drop becomes its own single page PDF, so ten screenshots give you ten documents rather than one ten page one. Combining them is the obvious next thing this tool should do and it is not built. If you need it today, convert each one and merge them in a PDF reader.
Is the metadata in my PNG carried into the PDF?
No. Only the pixels are read, so text chunks, EXIF written by an export tool, GPS coordinates and Content Credentials are all left behind, every time and with no switch to keep them. Worth knowing in both directions: a photo exported as a PNG will not carry its location into a document you email, and if you needed that information preserved you will need it from the original file rather than from the PDF.
What happens to a transparent background?
It is kept. PDF understands transparency, so a PNG with an alpha channel is embedded with it intact and the page shows through behind it. Printed, that means the paper shows through. If you would rather have a solid white background, flatten the PNG before converting it.
Which page size should I pick?
A4 outside North America and US Letter inside it, if the document is going to be printed, signed, or attached to a form that expects a page. Match the image for anything that only gets looked at on a screen, because a fitted page puts a margin around your picture that nobody asked for.
Are my PNG files uploaded to convert them?
No. The PNG is decoded and the PDF is written by your own browser, in this tab. There is no upload endpoint in the site for a file to go to, which you can check in your network tools: convert something and watch that no request carries it. Disconnect from the network after the page loads and it still works.
Does this remove EXIF, GPS and AI metadata?
Yes, every time, and there is no way to turn it off. A PDF has no way to hold a PNG as a PNG, so only the pixels are read and the image is packed again from those alone, so EXIF and GPS, the XMP packet, embedded colour profiles, and any Content Credentials or AI-generation tags the file arrived with do not survive. There is no switch for this, because there is no way to keep them. What no compressor can remove is a watermark written into the pixels themselves, such as the invisible marks some image generators add: those survive re-encoding here and everywhere else.
Related
Same format joins the queue. Anything else re-routes to its own tool.