PNG to PDF Converter: Free Online

To convert a PNG to PDF, drop it into the box above, or drop a whole batch to combine them. Each file shows up as a thumbnail numbered in page order. Drag a thumbnail to move it, or use its arrow buttons if dragging is awkward (on a phone, for instance). Then click Build PDF and download the file. That's the whole job, and it works the same in Chrome, Safari, Firefox or Edge on Windows, Mac, iPhone and Android.

A few JPGs in the pile are fine too; they go into the same PDF. If your batch is mostly photos rather than PNGs, the image to PDF converter is the general version of this tool, with the same controls.

Before you build, pick a page size. "Fit to image" is the default: every page takes its PNG's own dimensions, so nothing is cropped, scaled or padded, and a wide screenshot next to a tall one gives you pages of two shapes. A4 and Letter put every image on the same standard sheet instead, shrunk to fit if it's too big (never enlarged, never stretched) and centered. Margin adds white space around the image on any of the three.

Nothing is uploaded. Your browser reads the files and assembles the PDF in a background worker, so even a batch of large screenshots builds in a few seconds and the page stays responsive while it does.

You don't strictly need a website for this. On a Mac, select the PNGs in Finder, open them in Preview, and use File, Export as PDF (or print and choose Save as PDF). On Windows, open the image in Photos, print it, and pick Microsoft Print to PDF as the printer. Both work fine for one image. Putting several PNGs in a set order with a consistent page size is where those routes get fiddly, and that's the part this tool makes quick.

Say you've got four screenshots from a bug report, saved as PNG, about 800 KB each. Sent as they are, that's four attachments, and the recipient has to work out which one comes first.

Drop all four into the box. They appear in the order you added them; if the third one actually shows the first step, drag it to the front. Leave the page size on "Fit to image" so each screenshot keeps its exact shape, and click Build PDF. A second or two later you have one four-page PDF, roughly the 3.2 MB the four PNGs add up to, ready to attach. Change anything after that (the order, the page size) and the old PDF is cleared, so the one you download always matches what's on screen.

Need it to print neatly? Switch to A4 or Letter and add a small margin before you build. Each screenshot is centered on its own sheet and scaled down to fit, never stretched.

PNG is an image format: one picture, compressed losslessly, optionally with transparency. PDF is a document format: pages that can hold text, vector shapes and images. Converting PNG to PDF here means placing each PNG on its own page. The pixels go in exactly as they were, recompressed with the same lossless method PNG itself uses, so nothing is blurred, resized or turned into JPG along the way. The PDF usually ends up close to the total size of the PNGs you put in.

Transparency survives too: it's stored in the PDF as a mask, and on a plain page the see-through areas simply show the white paper behind them. The one thing that can't come along is animation. An animated PNG (APNG) is refused with a message saying so, since a PDF page holds a still image. Very large images are fine, though a screenshot taller than about 14,400 pixels is drawn slightly smaller on a "Fit to image" page, because that's the biggest page the PDF format allows. Every pixel is still in there; you can zoom in on it.

If you were searching for Adobe's PNG to PDF tool: Acrobat does this well, but its online converter uploads your files to Adobe, and the full Create PDF tool in Acrobat is part of a paid plan. This page does the same conversion for free without your images leaving your device. Other pages here do the same job for other formats: HEIC to PDF for iPhone photos and SVG to PDF for vector graphics.