PNG to PDF

How it works

This tool builds a PDF directly inside your browser tab — no server, no upload, no waiting in a queue. Each PNG you drop shows up as a thumbnail you can drag into any order before clicking Create PDF; the actual PDF is assembled in a background Web Worker so the page stays responsive even with a large batch of images.

Pick A4 or Letter to place every image on a standard page — centered and scaled down only as much as needed to fit within your chosen margin — or pick "Fit to image" to make each page exactly the size of its source PNG, which is the better choice for screenshots and graphics where you don't want any extra white space.

Turning PNGs into a PDF is useful for combining a set of screenshots into one document, archiving diagrams or exported charts under a single filename, submitting scanned pages that were saved as PNG, or assembling design mockups into one file for review. Because the source PNG bytes are embedded into the PDF rather than re-rendered, the result stays exactly as sharp as your originals.

Limitations

There's no limit on the number of images you can combine; the only real ceiling is your browser's available memory, which comfortably handles well over a hundred images. PDF pages don't support transparency, so any transparent regions in your source PNGs become opaque white in the output — this is a property of the PDF format itself, not something this tool chooses to do.

FAQ

Is this PNG to PDF converter really free?

Yes — completely free, with no file count or size limits, and no account required. Everything runs in your browser, so there's no server cost to recoup.

Can I combine multiple PNGs into one PDF?

Yes — drop as many PNG files as you like and every one becomes a page in a single PDF, in whatever order you drag them into before clicking Create PDF.

What page size options are available?

Choose A4 or Letter to fit each image onto a standard page (centered, scaled to fit within your chosen margin), or "Fit to image" to make each page exactly the size of its source PNG with no white space.

What happens to transparency in my PNGs?

PDF pages don't support transparency the way PNG does, so any transparent areas in your source image are rendered as opaque white in the resulting PDF page.