How to convert PNG to PDF
- Choose or drop your PNG files. One screenshot or a whole folder of them — each image becomes one page, in the order of the file names. You can also paste a screenshot straight from the clipboard with Ctrl+V (⌘V on a Mac).
- Pick the page. The default, Same shape as image, makes each page exactly the proportions of its PNG with no white border, so the PDF looks like the picture. Choose A4 or US Letter when the PDF is going to be printed or submitted as a document.
- Keep the quality on Lossless for screenshots, text, charts and graphics. Switch to Smaller file (JPG) only for photos saved as PNG, when the file size matters more.
- Create the PDF and download it. The result shows the number of pages and the size of the PDF.
Lossless: why PNG needs a different converter
PNG is a lossless format: it stores every pixel exactly, which is why screenshots, diagrams, logos and scanned forms are saved as PNG. Many image-to-PDF converters still turn each picture into a JPG inside the PDF. JPG compression is made for photos; on sharp edges it leaves faint smudges and colored fringes around letters, thin lines and flat areas — exactly what a screenshot is made of.
In lossless mode this converter puts the PNG’s pixels into the PDF unchanged, compressed with the same Deflate method PNG itself uses. Zoom into the PDF and the text of a screenshot is as crisp as in the original image, pixel for pixel. Only very large images are scaled down: those above 16 million pixels (larger than about 4,000 × 4,000), which is about the most Safari on an iPhone can draw at once.
For screenshots, lossless is also the smaller choice. In our test in Microsoft Edge (October 2026), three 1280 × 900 screenshots of web pages, 71–91 KB each as PNG, became PDFs of 56–70 KB in lossless mode but 105–138 KB with the JPG setting: flat colors and text compress far better without loss than as JPG. Photos are the opposite. A 3840 × 2400 landscape photo saved as PNG (7.8 MB) gave a 6.1 MB lossless PDF and a 0.48 MB PDF with the JPG setting (90% quality), which still looks good at normal size. So keep Lossless for screenshots, documents and graphics, choose JPG for photos, and use the PDF compressor if the file must be smaller still.
Transparent PNGs
A PNG can have transparent areas — a logo without a background, a signature, a sticker. PDF pages are white, so transparent parts of the image become white in the PDF, just as they would look printed on paper. The edges stay smooth because semi-transparent pixels are blended with white rather than cut off. If you need a colored background instead, convert the image with PNG to JPG, which lets you choose the color, and turn that into a PDF.
Page size: image-shaped, A4 or Letter
| Page setting | Best for | A 1,920 × 1,080 screenshot becomes |
|---|---|---|
| Same shape as image | Screenshots, slides, designs, reading on screen | a 297 × 167 mm page filled edge to edge |
| A4, small margin | Printing, school and office documents in most countries | a landscape A4 page (297 × 210 mm) with the image 283 × 159 mm |
| US Letter | Printing in the USA and Canada | a landscape 279 × 216 mm page |
With A4 or Letter, automatic orientation turns each page to match its image: wide screenshots get landscape pages and tall phone screenshots portrait ones. The image is centred and scaled to fit without distortion.
Combining several PNGs into one PDF
Select all the images at once and they become one PDF, one image per page. The pages follow the file names, so screenshots named with the date and time come out in the order they were taken. To use a different order, rename the files 01, 02, 03… before adding them, or combine them with merge PDF, which also accepts images and lets you set a custom order. Mixing PNG with JPG or WebP images in one PDF works too.
Private by design
Screenshots often show things that should stay private: bank balances, chats, passwords, medical results, ID cards. This converter never uploads them. Your browser opens the images, builds the PDF on your device and offers it for download; once the page has loaded it even works offline. Text in the images remains a picture, so the PDF is not searchable — copy text out of a screenshot first with image to text if you need it as text.
Frequently asked questions
Does converting PNG to PDF lose quality?
Not in lossless mode (the default): the PNG’s pixels are stored in the PDF unchanged, so screenshots and text stay sharp. Only the optional “Smaller file (JPG)” setting compresses the images.
How do I combine several PNG files into one PDF?
Select or drop all the PNG files together. Each one becomes a page of a single PDF, in the order of the file names.
What happens to a transparent background?
PDF pages are white, so transparent areas become white, with smooth edges. For another background color, convert the PNG to JPG with a chosen color first.
Why is my PDF bigger than expected?
Photos saved as PNG stay large in any lossless format, and PNGs optimized to a small color palette are stored in the PDF with full color. Choose “Smaller file (JPG)” for photos, or compress the finished PDF.
Are my PNG files uploaded?
No. The PDF is created by your own browser on your device; the images are never sent to a server.
Last updated: October 19, 2026