PNG to PDF
Turn PNG screenshots and graphics into a PDF with the page size and margins you choose.
Turn PNG screenshots, diagrams, scans and graphics into a PDF you can share or print. Add one PNG or many, set the order, and choose whether every image goes into one PDF or into its own file. It runs in your browser, so your images are never uploaded.
How to convert PNG to PDF
- Choose or drop your PNG files.
- Arrange them and pick page size, orientation and margin.
- Click “Convert to PDF” and download.
Frequently asked questions
How do I convert a PNG to a PDF?
Add the PNG file, choose a page size (A4, Letter or Fit) and click Convert to PDF. The PDF is created in your browser and downloads straight away. There is no sign-up.
Can I merge several PNG files into one PDF?
Yes. Add all your PNGs and leave “Merge all images in one PDF file” ticked. Each PNG becomes one page, in the order shown, and you can drag them to reorder before converting.
What happens to transparent backgrounds?
Transparent areas become white, because a PDF page is printed on white paper. Everything else in the image is kept.
Is the image quality reduced?
Images are saved inside the PDF as compressed JPEG at up to 150 dpi of their size on the page, which keeps the file small enough to email. Screenshots, photos and diagrams stay clear. Choose “Fit” if you want each page to match the image exactly.
Can I convert other image types too?
Yes. JPG, WebP, GIF and BMP files work the same way and can be mixed with PNGs in one PDF.
Is it really free?
Yes. There is no sign-up, no daily limit and no watermark added to your files.
Are my files uploaded to a server?
No. ModifyPDF processes files with JavaScript inside your browser. Your documents never leave your device, and nothing is stored after you close the page.
How PNGs are converted
Each PNG is placed on its own page, centered and scaled to fit without being stretched. Transparent backgrounds are filled with white. Images are stored at 150 dpi of their size on the page, which keeps the PDF small enough to email.
Page layout options
Pick A4, US Letter or “Fit” to make each page exactly the size of its image, portrait or landscape, and no, small or big margins. Several PNGs go into one PDF by default; untick the merge option to get one PDF per image.
Why convert in your browser
Many online converters upload your images to a server, cap the number of files, ask you to sign up or stamp a watermark on the result. ModifyPDF does the conversion on your device, so there is no upload, no sign-up, no daily limit and no watermark. That matters for screenshots of private documents, ID photos and anything you wouldn’t want on someone else’s server.
Screenshots and diagrams
For screenshots of text, choose “Fit” so the page matches the image and nothing is scaled down. For printing, choose A4 or Letter with a small margin so the image sits inside the printable area.
Combining with other files
To add the PNG pages to an existing PDF, convert them here first, then join the files with Merge PDF. Organize PDF lets you move the pages into any order.
PNG to PDF on a phone or computer
You can also print images to PDF with the built-in tools on your computer (Preview on a Mac, or Microsoft Print to PDF on Windows), but that is slow for more than a few images and gives you little control. Here you drop in all the PNGs at once, set the order, and pick the page size in one step. Our guide on converting PNG to PDF walks through each option.