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How to convert PNG to PDF (and combine several images)

Published October 31, 2026 by Jason Nel

Screenshots, exported diagrams and scanned pages often arrive as PNG files, but forms, job applications and email attachments usually want a PDF. Converting is quick, and you can put dozens of PNGs into one document at the same time.

How to convert PNG to PDF step by step

  1. Open PNG to PDF and choose your PNG files, or drop them onto the page. They’re processed in your browser and never uploaded.
  2. If you added several, put them in the order you want. Each PNG becomes one page.
  3. Choose the page size, orientation and margin (see below).
  4. Click Convert to PDF and download the result.

Combine several PNGs into one PDF

Leave Merge all images in one PDF file ticked and you get a single PDF with one page per image, in the order shown. Untick it and you get a separate PDF for every PNG, downloaded together as a ZIP. To add the PNG pages to a PDF you already have, convert them first and then join the two files with Merge PDF.

Which page size should I choose?

  • Fit makes each page exactly the size of its image, so nothing is scaled or cropped. This is the best choice for screenshots you’ll only read on a screen.
  • A4 or US Letter puts the image on a standard sheet, centered and scaled to fit without stretching. Choose one of these if you’ll print the PDF or the recipient expects a normal page.
  • Portrait or landscape applies to A4 and Letter. Pick landscape for wide screenshots and charts so they print larger.
  • Margin: none, small or big. A small margin keeps the image inside the area most printers can print.

What happens to transparent PNGs?

A PDF page is printed on white paper, so transparent areas are filled with white. If your PNG has a transparent logo on a transparent background, expect a white background behind it in the PDF.

Quality and file size

Images are stored in the PDF as compressed JPEG at up to 150 dpi of the size they take up on the page. That keeps the file small enough to email while screenshots, photos and diagrams stay clear. If the PDF is still too large, run it through Compress PDF.

Other image types

JPG, WebP, GIF and BMP images work the same way, and you can mix them with PNGs in one PDF. See Image to PDF and JPG to PDF.

Tips for better results

  • Crop screenshots to the part you need before converting, so the text is larger on the page.
  • Name files with numbers (01, 02, 03) before adding them if you want them to arrive in order, or rearrange the pages afterwards with Organize PDF.
  • To turn the pages back into images, use PDF to PNG.