How to use PNG to PDF online, free

PNG is the format screenshots default to, and it is what people use for scans they do not want compressed. Both end up needing to become a PDF, because that is what forms, portals and colleagues expect - one file, pages in order, printable. This tool wraps each PNG as a page. The one behaviour worth knowing in advance concerns transparency: PNG supports transparent backgrounds and PDF pages do not, so any transparent area is filled with white. That is almost always what you want for a document, but it surprises people converting a logo with a cut-out background. Images are embedded at their original resolution rather than re-compressed, so a screenshot stays exactly as sharp as it was. Note that PNG screenshots of text are pictures, not text - the resulting PDF is not searchable. Everything runs in your browser using pdf-lib, so nothing is uploaded.

PDF tools that upload to a server are a poor fit for contracts, IDs and anything you would not paste into a random website. This one is meant for that exact case.

PNG to PDF is a good fit when combining screenshots into one document for a bug report or process guide.

Why this exists

PNG to PDF is built around a few practical wins, not a long feature list:

• Turns a folder of screenshots or scans into the single PDF that forms and portals require.
• Images embedded at original resolution rather than re-compressed, so text in screenshots stays legible.
• Runs in your browser, so documents and screenshots never leave your device.
• Page order under your control before anything is generated.
• No account, no page limit and no watermark.

Walkthrough

1. Add your PNG files. Drop in one or several. They are read locally, with nothing uploaded at any point.
2. Arrange the page order. The PDF follows the order shown on screen, so set it before generating.
3. Choose the page setup. A4 or Letter, with images fitted proportionally so nothing is stretched or cropped.
4. Create and download. One PDF containing every image as a page, ready to submit or send.

Jobs it is built for

• Combining screenshots into one document for a bug report or process guide.
• Submitting scanned pages saved as PNG to a form that requires PDF.
• Packaging design mockups into a single file for a client.
• Turning a set of chart or dashboard exports into one report.
• Preparing evidence or documentation where a single ordered file is expected.

Worth knowing before you start

• Check the order before generating. Reordering afterwards means splitting the PDF or starting again.
• PNG screenshots produce large PDFs. If the file exceeds an upload limit, run it through the PDF Compressor.
• Transparent areas become white. If that matters, set the background you want in the image first.
• For photographs rather than screenshots, JPG to PDF gives a much smaller file with no visible difference.
• The result is images of text, not text. Use OCR Image to Text first if you need it searchable.

What not to expect

• Expecting transparency to survive. PDF pages have no transparent background - the area becomes white.
• Adding images in the wrong order and noticing only after generating.
• Using PNG for photographs, producing a PDF several times larger than necessary.
• Expecting the text in screenshots to be searchable in the PDF. It is a picture of text.
• Uploading sensitive scans to a server-based converter. This one processes locally.

Privacy, in one paragraph

PNG to PDF runs in your browser. The file or text you paste stays on your device. There is no account, and nothing is stored on a ToolBox server for this job.

Related tools worth opening next

If this is one step in a longer job, these usually come after it:

• JPG to PDF - Convert JPG images to a PDF document
• PDF to Images - Convert PDF pages to images
• Merge PDF - Combine multiple PDF files into one

Short answers

Does PNG transparency cause any issues in the PDF?

Transparent areas are filled with a white background in the PDF, since PDF pages don't support transparent backgrounds the way PNG files do.

Can I mix PNG and JPG images in one PDF?

Use this tool for an all-PNG set; if you need to combine formats, convert everything to PDF pages separately and then merge the resulting PDFs with the Merge PDF tool.

Is there a limit to how many PNGs I can add?

No server-imposed limit, since processing is local. Very large batches of high-resolution PNGs use browser memory, so close other heavy tabs if you are adding hundreds.

Are my images uploaded to a server?

No. The PDF is assembled in your browser with pdf-lib, so screenshots and scanned documents never leave your device.

Why is my PDF so large?

Because PNG is lossless and stores every pixel exactly, which is expensive for anything photographic. For photos, JPG to PDF produces a far smaller file. For screenshots, PNG is the right choice - run the result through the PDF Compressor if it needs to be smaller.

Will the text in my screenshots be searchable?

No. The PDF contains images of text, not text itself. Run the images through OCR Image to Text first if you need searchable content.

Open the PNG to PDF when you are ready. It is free, and you do not need an account.