PNG to PDF

What is PNG?

PNG (Portable Network Graphics) is the standard lossless image format on the web. It stores every pixel exactly as it was drawn — no compression artefacts, no quality slider — and it supports alpha transparency, which is why icons, logos, screenshots, charts, UI mock-ups and exported design work almost always ship as PNGs. The trade-off is filesize: a PNG of a busy photographic image is bigger than the same image saved as JPG. For artwork, line drawings, diagrams and anything with text, the lossless quality is worth it.

What is a PDF?

A PDF (Portable Document Format) is a self-contained document format that bundles text, fonts, images, vector graphics and page layout into a single file that looks identical everywhere it opens. It is the universal format for sharing documents that need to print or display the same on any device, and it is the format most forms, portals and submission systems require for uploaded paperwork. A PDF is also the cleanest way to hand someone a tidy, ordered collection of images in one file.

Why convert PNG to PDF?

The most common reason is bundling. A folder of PNG screenshots, a series of exported design comps, or a batch of scanned receipts is fiddly to share as individual files but easy to share as a single PDF. One attachment, one filename, in the order you choose.

The second is uploads. Job-application portals, expense systems, visa applications and university submission pages routinely demand PDF and reject image files. Wrapping your PNGs into a PDF is faster than printing them through Word or Preview and avoids the silent re-encoding those apps do on the way through.

The third is transparency preservation. If your PNGs include transparent backgrounds — common for logos, mock-ups, or anything exported from Figma, Sketch or Illustrator — most “print to PDF” workflows quietly flatten that transparency to white. The pdf-lib embedPng path used here keeps the alpha channel intact, so the result composites cleanly if you ever overlay it on something else.

If you arrived searching for a PNG to PDF converter, a way to convert PNG to PDF without installing anything, or a convert PNG to PDF free option that does not require an account, this is that tool. The flow is the same whether you have one PNG or fifty — drop them, reorder if needed, pick a page size, click Convert. Everything runs in your browser, which means no upload, no sign-in, and no per-day conversion limit.

How to convert PNG to PDF on ToolJutsu

1. Drop your PNGs onto the dropzone, or click to browse. Multiple files at once is fine. Everything is read locally; nothing leaves your device.
2. Reorder the thumbnails by dragging if you want a specific page sequence. The order shown is the order the PDF will use.
3. Pick a page size — fit-to-image keeps each page exactly the shape of its PNG, while A4 or US Letter centres each image on a standard page with margins.
4. Click Convert to PDF. The pdf-lib library embeds each PNG’s bytes directly into the PDF, preserving the alpha channel where present. The result downloads automatically.

Quality tips for PNG to PDF

For transparent logos and graphics, leave the page size on fit-to-image; that way nothing is scaled and the alpha sits cleanly on whatever you later place the PDF over. If you pick A4 or Letter, the surrounding page is white by default, so the transparency is preserved but visually rests on white.

For screenshots, fit-to-image gives the most natural result because each screenshot keeps its native pixel dimensions. If you need uniform pages — for printing or for an upload portal — pick A4 or Letter and the scaler will keep every image’s aspect ratio intact.

For scanned PNGs, page size A4 (or Letter, if you are in North America) usually matches the physical paper they were scanned from and will print at the correct physical size. Drag to reorder so the pages come out in document order, not the order your scanner happened to emit them.

For mixed sizes, fit-to-image avoids any awkward whitespace around small images on a big page. If consistency matters more than exact dimensions, use a fixed paper size.

Privacy

Your PNGs and the assembled PDF stay on your device. The page loads the pdf-lib library once, caches it, and does all PDF assembly in JavaScript on your CPU. There is no upload, no server-side processing, no analytics on your image contents. You can confirm this in your browser’s Network tab — or simply switch off Wi-Fi after the page loads and the converter will still work.

Compatibility notes

The output is a standard PDF 1.7 file with embedded PNG image streams, which every modern PDF reader supports — Adobe Acrobat, Apple Preview, the built-in viewers in Chrome, Edge, Firefox and Safari, and mobile readers on iOS and Android. If you also want to combine the result with other PDFs afterwards, use the PDF Merger tool. For mixed-format batches (JPG + PNG together), use JPG to PDF; for any other formats (WebP, AVIF, HEIC, TIFF and more), start from Image to PDF.