How Do You Convert PNG to PDF?
You convert PNG to PDF by adding your images to QuickCatPDF's PNG to PDF tool and clicking Convert to PDF. The images are stored losslessly, so screenshots, charts and text stay as crisp as the originals, and transparent areas stay transparent unless you choose a white background.
Everything happens in your browser. Your PNG files are never uploaded, which matters for screenshots that show messages, accounts or work documents. In short, it's a private PNG to PDF converter. It's also the quickest way to save PNG as PDF without losing detail.
How to Convert PNG to PDF With QuickCatPDF
Turning PNG images to PDF takes four steps.
- Click Select images, drop your PNG files on the page, or paste a screenshot with Ctrl+V.
- Arrange the thumbnails by dragging them, or with Move earlier and Move later. Rotate or remove any image.
- Under Background for transparent areas, keep Transparent or choose White. Set Page size and Margins if you plan to print.
- Click Convert to PDF, then Download PDF.
To get a separate PDF for every image, set Output to PDF per image (ZIP) before converting.
Why Use QuickCatPDF for PNG to PDF?
QuickCatPDF keeps PNG images lossless: every pixel in the PDF matches the original, with no JPEG-style blur around text or sharp edges. That's the main reason to choose PNG in the first place, so the PDF shouldn't undo it.
The files also stay compact. The tool compresses pixels with the same row filters PNG itself uses, and it stores pure black-and-white images at one bit per pixel. Grey images are detected automatically and saved in grayscale.
The limit to know about: a large, detailed PNG stays large at Original quality, because lossless images can't shrink much. If size matters more than perfect pixels, choose High or Balanced, or use Image to PDF under 200KB to hit a specific limit.
What Happens to Transparent Areas in a PNG?
Transparent areas stay transparent in the PDF by default, so a logo keeps its shape on any background. Most PDF viewers show transparency as white, so on screen you'll usually see white anyway.
Choose White under Background for transparent areas if you'll print the PDF or send it to a program that handles transparency badly. Semi-transparent edges, like the soft shadow around an icon, are blended smoothly onto white instead of turning jagged.
How Do You Combine Several PNG Images Into One PDF?
To combine PNG into PDF pages, add all the images together and leave Output on One PDF. Each PNG becomes a page in the order of the thumbnail grid, and the number on each thumbnail shows its page.
Use Sort to order images by name or date, which helps with numbered screenshots. To fit more on a sheet, set Images per page to 2 or 4; with a fixed page size such as A4, each image is scaled to fit its space without stretching.
You can also mix in other formats. JPG, WebP and most other images can go into the same PDF; the Image to PDF page is designed for mixed batches.
Which Settings Suit Screenshots and Graphics?
For screenshots, keep Page size on Fit to image and Margins on None. Each page then matches the screenshot exactly, which reads best on screens and keeps text at its original size.
For printing, choose A4 or US Letter with Small margins, and keep Image quality on Original (no quality loss) so small text stays sharp on paper. If your PNGs are actually photos, a JPG-based setting like High gives a much smaller file with no visible difference; JPG to PDF explains the trade-off.
Frequently asked questions
Does converting PNG to PDF reduce quality?
No, at the default Original (no quality loss) setting the PDF holds exactly the same pixels as your PNG. Quality only changes if you choose High, Balanced or Small file, which use JPEG compression to make the PDF smaller.
Is there a free PNG to PDF converter without a watermark?
Yes, it's free with no account, no watermark and no daily limit. Your device does the converting, so there's no per-file cost and no queue.
Are my images uploaded anywhere?
No, the images are read and converted by your browser on your own device. Nothing is sent to QuickCatPDF or anyone else, and the page even works with your internet switched off after the first visit.
Can I paste a screenshot directly?
Yes, take a screenshot, open the PNG to PDF page and press Ctrl+V (Cmd+V on a Mac). The screenshot appears as a thumbnail, ready to convert with any other images you add.
What is the maximum PNG size?
Each file can be up to 100 MB and 100 megapixels. Very large batches depend on your device's memory, so the tool warns you above 150 images or 500 MB in total.
Can I convert PNG to PDF on a phone?
Yes, the tool works in mobile browsers on Android and iPhone. Tap Select images to pick PNGs from your files or gallery, then convert and download as usual.
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