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PNG to PDF
Screenshots and transparent images into one PDF. Free, no sign-up.
Converting PNG to PDF places each image on its own page, sized to that image, in the order you arrange them. The alpha channel is kept, though a PDF page has no background of its own, so transparent areas read as white. It is free, needs no account, and runs entirely in your browser.
or drop them here
PNG to PDF runs inside your browser — your file never reaches our servers.
How to convert PNG to PDF
Each PNG becomes one page, sized to that image, in the order you arrange them. Nothing is scaled or cropped to fit a fixed page size.
- Select your PNGs. Click the button or drag the files onto the page. They stay on your computer.
- Put them in order. Each image shows a thumbnail. Drag a card where you want it, or use the arrows on it. The first card becomes page 1.
- Convert and download. One PDF, built in your browser, with one page per image.
What happens to transparency
A PNG can carry an alpha channel: a per-pixel record of how see-through each pixel is. It is why a logo exported as PNG drops cleanly onto any background, and why a UI capture with rounded corners has nothing in the corners at all. That information is not thrown away here. PDF has its own mechanism for it — a soft mask, an image stored alongside the picture saying how opaque each pixel is — and the alpha channel is written into one, so the embedded image is still genuinely transparent inside the file.
What you will not see is the effect. A PDF page has no background of its own: it is an empty sheet, and every reader paints that sheet white before drawing anything on it. So a transparent PNG converted here looks exactly like an opaque one on a white rectangle, and prints as nothing on the paper. The transparency is there and does nothing, which is a different problem from losing it, and matters in one case: if the page is later placed over other content — stamped as a watermark, composited into another document — the see-through parts behave correctly.
If you want the image to sit on a colour rather than on white, composite it onto that colour in an image editor before converting. There is no background option here, because a colour nobody chose is worse than the white the format already implies.
Screenshots, file size, and the trade worth making
PNG compresses losslessly, so a screenshot of a page of text keeps every letter edge exactly as the screen drew it. Nothing here re-encodes it: the bytes go into the PDF as they arrived. That is the right choice for the thing most people convert here — captures of documents, dashboards, chat threads and error messages, where JPEG would put a visible smear around every glyph — and it is also why the output is heavier than people expect. Twenty full-resolution screenshots make a PDF of a size that surprises anyone used to photographs.
If that matters more than the crispness, Compress PDF re-encodes those page images as JPEGs and keeps whichever version comes out smaller. Do it afterwards rather than instead: converting first and compressing second gives you a choice, while converting an already-lossy image gives you nothing to go back to. For photographs, skip the round trip and use JPG to PDF, which takes PNG as well and is the better page for a mixed folder.
Page size follows the image, which is not always what you want
Each page is made to fit its own image, so the PDF ends up with as many page shapes as you had image shapes. A tall phone screenshot and a wide desktop one produce a tall page and a wide page in the same document. On screen that is fine — readers scale each page independently. It is printing where it shows, because most printers scale or shift an odd-sized page to fit the tray, and a set of mismatched pages prints as a set of mismatched sizes.
There is no fixed-page mode here, deliberately: padding every image onto A4 would add white bars whose size nobody chose. If you need uniform pages, size the images to a common aspect ratio first. And if the order matters — it usually does, for a sequence of screenshots — arrange the cards before converting rather than fixing it afterwards, though Reorder pages and Merge PDF are both there if you do.
PNG to PDF: common questions
Does transparency survive?
In the file, yes — the alpha channel is written into the PDF as a soft mask, so the image itself is still see-through. What you will not see is the effect of it, because a PDF page carries no background of its own and every viewer draws the sheet white. So a logo exported with a clear background looks like a logo on white. It is only if you place the page over something else, or pull the image back out, that the transparency shows.
Why is my PDF so much bigger than the screenshots were?
PNG is lossless, and nothing here re-encodes it, so the pixels go into the PDF at full weight. That is the right trade for a screenshot of text — a JPEG of the same capture smears the letter edges — but it does add up across twenty pages. Compress PDF will bring it down afterwards, by re-encoding those page images as JPEGs.
Should I use this or JPG to PDF?
Use this one for screenshots, diagrams, charts and anything with text or flat colour in it, where PNG keeps the edges crisp. Use JPG to PDF for photographs, where JPEG is both smaller and visually identical. That page also accepts PNG, so if you have a mix, it takes both.
What page size do I get?
Each page is the size of its own image, so a tall mobile screenshot and a wide desktop one end up as differently shaped pages in the same file. That opens fine everywhere; it is printing that notices, because the printer scales each page to the tray.
Are my files uploaded to a server?
No. Every tool on this site runs inside your browser, using the same engine as the Folia desktop app. Your file is read from your disk into your browser’s memory, processed there, and handed back as a download. It never crosses the internet, so there is nothing for us to store, leak or hand over.
Is there a file size limit?
We impose none. The only ceiling is your own device’s memory, which differs from one computer to another — so we read what your browser reports about this machine and show the resulting limit on the page. Light tools like merge and rotate handle far more than heavy ones like OCR, which must render every page. For anything larger, Folia for Desktop has no limit at all.
Is it really free? Do I need an account?
Yes, and no. Every tool is free and unlimited, with no watermark and no sign-up. Ads pay for the site, and your own computer does the work, which costs us nothing. Signing in with a paid Folia plan simply removes the ads.