How this works in your browser
pdf-lib builds the document in your browser, creating one page per image and embedding the picture at full resolution rather than resampling it. The PNG-specific detail worth knowing is how alpha is handled: PDF pages have no transparent background, so any transparency in the source has to be flattened onto white as the image is placed. Nothing else is altered, which is what keeps screenshot text sharp. The page size setting only determines the box the image is fitted into and never re-encodes the embedded image data.
PNG to PDF vs. traditional online converters
| Feature | PNG to PDF (in-browser) | Traditional online converters |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
How to use PNG to PDF
- 1
Open the PNG to PDF tool
Go to tools.slaytic.com and open the PNG to PDF tool. No sign-up or account required.
- 2
Drop your PNGs and order them
Drop in your images, drag them into the sequence you want, and pick a page size. JPG and WebP files can be mixed in freely.
- 3
Download the PDF
Each image becomes one page, embedded at full resolution, and the finished document is offered for download.
Common ways to use PNG to PDF
Turning screenshots into a document
Combine a run of captured screens into one ordered PDF for a bug report, walkthrough or handover note.
Submitting design exports
Package PNG mockups or diagrams into a single file for a client or reviewer who expects a PDF.
Archiving graphics losslessly
Keep charts and diagrams pixel-exact inside a shareable document, without the softening a JPEG conversion introduces.
Frequently asked questions
What is the difference between this tool and JPG to PDF?
They are the same tool. Both accept PNG, JPG, and WebP images. The separate entries exist for discoverability - people often search by the format they have.
Are transparent PNG backgrounds preserved?
PDF pages do not have transparent backgrounds. Transparent areas in a PNG are rendered as white in the PDF output.
Can I mix portrait and landscape images in the same PDF?
Yes. Each page orientation is set to match the image dimensions, so portrait images become portrait pages and landscape images become landscape pages.
Why does my transparent logo end up on a white box?
Because a PDF page is opaque by design, so transparency has to resolve to something. Transparent pixels are composited onto white. If the logo was drawn in white for a dark background, it will appear to vanish, which is worth checking before sending.
Will the PDF be much larger than my PNGs?
PNG is lossless, so screenshots and graphics carry more data than an equivalent JPEG would. Expect the PDF to be roughly the sum of the source images plus a little structural overhead. Compress the PNGs first if size matters more than pixel-exactness.
Is this good for screenshots specifically?
Yes, and it is the most common reason people reach for it. PNG is the format screenshot tools produce, and because the images are embedded losslessly, small UI text stays crisp instead of picking up the soft edges a JPEG round trip would add.