PNG to PDF: turn PNG images into a PDF

Put PNG screenshots, logos and charts into one PDF, losslessly.

On your device. No watermark. No sign-up.

How to use PNG to PDF

  1. Open your file. PNG to PDF starts as soon as you drop a file or click the box above — the file opens in your browser and stays there.
  2. Choose your options. Add your PNG files, set the order with the arrows, choose Fit to each image or A4, then press Convert.
  3. Download the result. The finished file is generated on your device and saved straight from your browser — free, with no watermark added.

This tool is processed locally with JavaScript inside your browser tab. The document is not uploaded, stored or seen by a server, which makes it suitable for contracts, invoices, CVs and medical or financial records.

A PNG goes into the PDF unchanged

PNG files are embedded exactly as they are. The picture is not re-compressed and no JPEG step is involved, so a screenshot of text is as sharp inside the PDF as it was on screen.

That is the reason to use this page instead of a JPG converter. JPG throws away detail around sharp edges, and sharp edges are exactly what text, charts, logos and thin lines are made of. A PNG keeps them, and the PDF keeps the PNG.

The PDF ends up roughly as heavy as the PNG files added together. Ten screenshots of 2 MB make a PDF of about 20 MB, so a photo-heavy or screenshot-heavy PDF often needs Compress PDF afterwards.

Transparency becomes a white page

A PNG can carry an alpha channel, which means parts of the picture can be see-through. A PDF page cannot be see-through. When the image is placed, the transparent parts show the white page underneath, so a logo that looked transparent on a website arrives as a logo on a white rectangle.

For forms, receipts and signatures this changes nothing, because the page is white anyway. If the PDF will be dropped onto a coloured slide or a coloured cover, put the colour you want into the image before converting, so you see the result before it is placed.

Screenshots, charts and line art

This is what PNG is for. A screenshot of a dashboard, a chart exported from a spreadsheet, a logo, a signature on plain paper: all of these have flat areas and hard edges, and PNG keeps both clean.

Screenshots carry large pixel dimensions. A 2560 × 1440 capture becomes a page of about 35 × 20 inches when the page is fitted to the image. That reads well on a screen and prints scaled down.

If the PDF is going to be printed or uploaded to a portal, choose A4 or Letter instead, so every page is the same size and the image is scaled to fit and centred.

Page size, order and margins

Fit to each image makes every page exactly as large as its image, counting one pixel as one point. A 1200 × 800 screenshot becomes a page of about 16.7 × 11.1 inches.

A4 and Letter give every page the same size. Each image is scaled down to fit, never stretched, and centred. A small image is enlarged to fill the page, so a low-resolution PNG looks soft on A4.

The margin slider goes from 0 to 72 points, and 72 points is one inch. Use it when the PDF will be printed or hole-punched. Images are placed in the order shown, one per page, and each run makes one PDF.

Several PNGs, or a mix of formats

This page accepts PNG only, which keeps the result predictable: everything that goes in is lossless. If your folder has a mix of PNG and JPG, use Images to PDF instead — it takes both and builds the same kind of PDF.

To join this PDF with other documents, use Merge PDF. To get the pages back out as images later, use PDF to PNG.

Your images stay on your device

The PDF is built inside this browser tab with pdf-lib. Your PNG files are read from your disk and never sent to a server, so it is safe for ID copies, certificates, invoices and screenshots of anything private. After your first visit the tool also works offline.

Questions

Is this PNG to PDF converter free?

Yes. There is no account, no daily limit and no watermark on the PDF.

Are my images uploaded?

No. The PDF is built in your browser and the PNG files never leave your device.

Does converting a PNG to PDF reduce quality?

No. The PNG is embedded as it is, without re-compression, so the picture in the PDF is the same picture you added.

What happens to the transparent parts of a PNG?

They show the white page behind the image. A PDF page cannot be transparent, so a logo with a transparent background gets a white rectangle around it.

Can I put several PNG files into one PDF?

Yes. Add them all, put them in order with the arrows, and press Convert. Each PNG becomes one page of a single PDF.

Why is the PDF so large?

PNG files are stored at full size and are not compressed on the way in. Run the finished PDF through Compress PDF if it is too heavy for an email or a form.

Which page size should I choose?

Fit to each image for reading on screen, A4 or Letter for printing, for a portal upload, or when the PDF will be merged with other documents.

Can I convert a PDF back to PNG?

Yes. Use PDF to PNG to export each page as a lossless image.

Can I add JPG files on this page too?

No, this page takes PNG only. Use Images to PDF for a mix of PNG and JPG, or JPG to PDF style conversion through the same tool.

Does it work on a phone?

Yes. Pick the files from your gallery or your Files app. Very large screenshots can be slow on an older phone.

Guides

Last updated 12 November 2026

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