Skip to main content
FormatDrop
Home›Document›PNG to PDF
PNG
→
PDF

PNG to PDF Converter — Free, Online, No Upload

Turn screenshots, diagrams, or transparent PNGs into a clean single-page or multi-page PDF ready to email or print — no background fill imposed.

Free · no signup2 free files a day100% in-browser · no uploadPopular converter

Tap to select PNG files

or click to browse

2 free files per day (2 left today) · Up to 10 MB each · Upgrade for more

✓ Files never uploaded✓ 100% browser-based✓ No account required
Need the reverse?PDF → PNG

How to convert PNG to PDF online

  1. 1

    Drop your PNG file

    Drag your Portable Network Graphics file onto the box above, or click it to pick a file.

  2. 2

    Wait a few seconds

    Conversion starts on its own and runs on your device, not on a server.

  3. 3

    Download your PDF

    Click Download to save the Portable Document Format file.

Watch it done (20 seconds)

The exact steps above, on a real file — from drop to download, with nothing uploaded.

PNG vs PDF: format overview

PNG

Portable Network Graphics

PNG Development Group (Thomas Boutell) · 1996

Compression
lossless
Color depth
16-bit
Transparency
Yes
  • ✓ Lossless compression — pixel-perfect quality
  • ✓ Full alpha transparency (8-bit alpha channel)
  • ✗ Large file sizes for photos
PDF

Portable Document Format

Adobe Systems (John Warnock) · 1993

Compression
lossless
Transparency
No
  • ✓ Fixed layout — looks identical on every device
  • ✓ Embeds fonts, images, and vector graphics

PNG magic bytes: 89 50 4E 47 0D 0A 1A 0A

PDF magic bytes: 25 50 44 46

Why convert PNG to PDF?

A PNG is one picture. A PDF is a document — it can hold many pages, and every portal, printer and email app knows what to do with it. That's why people turn screenshots, scanned forms and diagrams into PDFs: to hand in one tidy file instead of a folder of images.

One PNG becomes a one-page PDF. Several PNGs become one PDF with a page for each image, in the order you add them. The PDF output has no watermark on the free tier.

What this doesn't do: it doesn't make text in the image searchable or selectable. A screenshot of text is still a picture inside the PDF.

Common reasons to convert PNG to PDF:

  • ›A job, visa or school portal that only accepts PDF uploads
  • ›Combining screenshots into one file for a report or support ticket
  • ›Turning a scanned ID or signed form into a document you can email
  • ›Sending design mockups as one PDF instead of loose image files

Quality & file size: PNG to PDF

No quality is lost. The PNG's pixels go into the PDF unchanged, at their full resolution.

The PDF is usually about the same size as the PNG, and sometimes smaller. In our tests a 246 KB screenshot became a 132 KB PDF, and a 2.09 MB photo-style PNG became a 2.04 MB PDF.

Each page is exactly the size of its image: one pixel becomes one point, so a 1000 × 820 px screenshot makes a page about 13.9 × 11.4 inches. To print on Letter or A4, use your print dialog's fit-to-page option.

Transparency is kept. Most PDF viewers show a white page behind the image, so transparent areas look white.

Frequently asked questions

Does converting PNG to PDF reduce quality?
No. The image goes into the PDF pixel for pixel, at full resolution, with no lossy compression.
Is a PNG file the same as a PDF?
No. A PNG is a single image. A PDF is a document format that can hold images, text and many pages. Converting puts your PNG inside a PDF page; the image itself doesn't change.
Can I combine multiple PNG files into one PDF?
Yes. Select several PNGs at once and you get one PDF with a page for each image, in the order you added them. The free tier converts 2 files per day, so a free PDF can have up to 2 pages; Pro has no limit.
How do I convert PNG to PDF on a Mac?
Drop the PNG on this page and download the PDF. Or use Apple's built-in way: open the PNG in Preview, choose File > Export, and pick PDF from the Format menu.
How do I convert PNG to PDF on Windows?
Drop the PNG on this page and download the PDF. Windows can also do it: open the PNG, choose Print, and select Microsoft Print to PDF as the printer.
How do I convert PNG to PDF on my iPhone?
Open this page in Safari, tap the box, choose the PNG (screenshots are PNGs), and save the PDF to Files or share it. Nothing is uploaded — the conversion runs on your phone.
Why is my PDF page so big when I print it?
Each page is the size of the image — one pixel becomes one point, so a 2000-pixel-wide PNG makes a page about 28 inches wide. Choose fit to page in the print dialog and it prints normally on Letter or A4.
What happens to transparent areas of my PNG?
The transparency is kept inside the PDF. Most PDF viewers show a white page behind the image, so those areas look white. If you want a coloured background, add it to the PNG before converting.
Is there a watermark on the PDF?
No. The free-tier watermark is only added to image files such as JPG and PNG output. PDFs come out clean.

Your PNG file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works