IMAGES.
Your file never leaves this tab.
Everything runs in JavaScript (and WebAssembly) on your device. We can't see your PDF, and neither can our servers — because your file never touches them.
HOW PNG TO PDF WORKS.
01. Drop
Drag your file onto the box, or click to pick one from your device.
02. Tweak
Set the options in the sidebar. Defaults work for most.
03. Download
Hit the big button. Your file is ready in seconds — never leaves your browser.
ABOUT PNG TO PDF.
PNG to PDF mirrors JPG to PDF but is tuned for the lossless image format — combining any number of PNG images into a single PDF document, one image per page, using pdf-lib to embed each PNG's pixel data directly without re-compression. This preserves transparency, sharp edges, and exact colors from the source PNGs, which matters for content like screenshots, diagrams, logos, or exported vector graphics where JPEG's lossy compression would introduce visible artifacts.
A common scenario is compiling a set of UI screenshots into a single reviewable PDF — screenshots are almost always saved as PNG by default on most operating systems, and stacking a dozen of them into one document makes for much easier review and annotation than a folder of loose image files. Because PNG supports transparency, screenshots or diagrams with transparent backgrounds keep that transparency faithfully in the resulting PDF page (rendered against whatever background the eventual PDF viewer uses).
Just like JPG to PDF, page size follows each image's own dimensions and aspect ratio, order follows your drop/sort choice, and no re-encoding of the underlying image data happens — the PDF simply wraps your existing PNG bytes in a page object sized to match. This keeps processing fast even for a large batch of images, since there's no lossy re-compression step to run through.
If your source images are photographs rather than screenshots or diagrams, JPG to PDF will typically produce a smaller resulting file for visually similar quality, since JPEG's lossy compression is specifically tuned for photographic content in a way lossless PNG isn't. Use PNG to PDF when exactness matters; use JPG to PDF when file size matters more than pixel-perfect fidelity.
If your batch mixes PNGs with some JPGs or other formats, note that this specific tool only accepts PNG input — for a genuinely mixed batch, either convert everything to one format first or process the different formats through their respective tools separately and merge the resulting PDFs together afterward with the Merge tool.
People compiling UI screenshots for a bug report, a design review, or a how-to guide are frequent users of PNG to PDF, since screenshots are almost universally saved as PNG by default and stacking a set of them into one document makes for far easier review than a folder of separate image files.
Because PNG's lossless nature makes it the default screenshot format on most systems, this tool effectively turns your OS's native screenshot habit into a document-compilation habit — no separate export or conversion step needed before the images are ready to become one shareable PDF.
- Screenshots and diagrams are the classic PNG to PDF use case — sharp edges stay sharp with no compression fuzz.
- For photographic images, JPG to PDF will usually produce a noticeably smaller file at similar visual quality.
- Transparent PNG regions render against a background determined by whatever PDF viewer eventually opens the file.
FAQ.
Common questions about png to pdf. Something else on your mind? Ask us.
Yes. Free forever. No sign-up. No credit card. No trial.
Never. Everything runs locally in your browser using JavaScript and WebAssembly.
Only limited by your browser’s memory. Most laptops handle 100MB+ with ease; very large files may be slower.
Once the page and its tool script have loaded, yes — processing runs entirely client-side.