Loona PNG to PDF Online - Free
Screenshots, diagrams and design exports usually live as loose PNG files. Gather them into one professional PDF here - choose the page size, set a margin, and download a document that is easy to email or print.
How to convert PNG to PDF
- Add one or more PNG images with the box above (JPG files work too).
- Choose page size, orientation and margin to suit your document.
- Click "Create PDF" and download the finished file.
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Frequently Asked Questions
Do transparent PNGs stay transparent?
The PNG itself is embedded unchanged. Most PDF viewers display transparency over a white page background, as printed.
Can I mix PNG and JPG images?
Yes. Both formats can be added to the same list and become pages of one PDF.
Are my images uploaded anywhere?
No. The PDF is assembled in your browser; nothing is sent to a server.
What does Fit to image do?
It sizes each PDF page to the image's own proportions, so nothing is cropped or padded.
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How it works
The tool builds a brand-new PDF with pdf-lib, entirely in your browser. Each PNG you add is embedded into the document exactly as it is - the image data itself is not re-compressed or altered - and given its own page. You choose the page size (A4, Letter, or fitted to each image), an orientation, and a margin; every image is then scaled to fit inside its page, keeping its proportions, and centred. JPG files work too - they are embedded the same way. When you click Create PDF, the finished document is saved as images.pdf. Your pictures never leave your device.
Worked example
A student photographs 6 pages of handwritten homework as PNG screenshots on her phone. She adds all six, picks A4 with a Small margin so the pages look uniform for her teacher, and creates the PDF. Out comes one tidy images.pdf - six clean A4 pages in the order she added them - ready to upload to the school portal.
Frequently asked questions
Can I change the order of the images?
The pages follow the order of the list, which is the order you added the files. There is no drag-to-reorder: to move an image, remove it with its Remove button and add it again at the end, or re-add the set in the order you want.
What is the finished file called?
It is always saved as images.pdf. If your browser or downloads folder already has one, it may add a number - you can rename it afterwards like any other file.
Will my PNGs lose quality inside the PDF?
No. PNG and JPG images are embedded unchanged, byte for byte. The page size and margin settings only decide how large the image is drawn on the page, not the quality of the stored image.
Which image formats can I add?
PNG and JPG (JPEG) only - the file picker accepts those two formats. Other formats such as WebP or GIF need converting to PNG or JPG first.
What if my images have different orientations?
Choose Orientation: Auto and each page follows its own image - wide images get landscape pages, tall images portrait pages. On Fit to image, every page matches its image's exact proportions.
How many images can I combine?
There is no fixed limit in the tool. Very large sets are limited only by your device's memory, since the whole PDF is assembled in the browser - dozens of normal photos are fine.