PNG to PDF Converter

PNG is the format of screens. Screenshots on Windows and macOS, exported charts, app mockups, diagrams and scans saved by many scanner apps all arrive as PNG, because it keeps text and hard edges exact. That makes it a poor fit for one job in particular: handing over a set of pages. Ten screenshots are ten attachments, they open in random order, and nobody can print them as one document.

A PDF solves that. The pages stay in the order you set, the file opens the same way in every browser and on every phone, and it can be printed, signed or uploaded to a portal that asks for a single document. Bug reports, how-to guides, receipts from apps and slide exports are the usual cases.

Your computer can do a single image on its own: Preview on a Mac exports a PNG as PDF, and Windows can print one to the built-in Microsoft Print to PDF printer. Both get awkward with many files, though, because they need a manual step per image or produce pages in an order you have to fix afterwards. Here you add the whole set at once, sort it, and get one file back.

Because PNG is lossless, the converter does not have to recompress anything at the default settings. Each image is placed on its page at its original pixel size, which is why the PDF is roughly as large as the PNGs together. That is the right default for screenshots, where a JPEG-style compression would leave halos around letters.

PNG was published as a W3C Recommendation in 1996 and later as ISO/IEC 15948; a third edition in 2025 added HDR and animation features. PDF has its own ISO standard, ISO 32000, so both sides of this conversion are open formats that any software can read. Neither depends on a single company's app, which is one reason archives and offices are comfortable with both.

With Same as image, every page takes the exact proportions of its PNG. That suits screen captures, which come in every shape, from tall phone screenshots to wide monitor captures. Readers scroll through such a PDF on screen just like the original images.

Choose A4 or Letter when the PDF will be printed or submitted somewhere that expects standard sheets. The image is then fitted inside the page with Image on page set to Fit; switch to Fill page to crop it to the edges, or add a Margin so nothing touches the paper's border. Orientation on Auto turns each page to match its image.

Large PNG captures from high-resolution screens can make a heavy PDF. If an email or a portal sets a limit, switch PDF file size to Target size and enter the limit in KB or MB; the images inside are recompressed, and reduced in pixels if needed, until the whole file fits. Expect a small loss of sharpness around text at tight targets.

For more layout options and every other image type, the main Image to PDF tool takes the same batches. Uploaded PNGs are deleted after the PDF is made, and the PDF itself 30 minutes later. If a document is already a PDF and only needs to be smaller, Compress PDF is the faster route.