Convert PNG to PDF

SwiftPDFEdit's PNG to PDF converter turns one or more PNG images into a single PDF document, one image per page, without re-encoding the pixels. Transparent regions are composited onto the white page rather than turning black, so screenshots, logos and diagrams look exactly as they did in your image viewer.

PNG is the native format of anything captured or exported from a screen — UI screenshots, chart exports, wireframes, diagrams, product mockups, QR codes. Those artefacts travel far better as a PDF: one file instead of twelve, a fixed page order, reliable printing, and a format that reviewers can annotate rather than accidentally edit.

Transparency is where naive converters fail. A PNG with an alpha channel dropped into a PDF without compositing often renders as a black rectangle, which is why exported logos so often arrive ruined. SwiftPDFEdit flattens the alpha channel against the page background before embedding, which is the behaviour you want for both print and sharing.

You control page geometry. “Fit to A4” centres each image on a standard page with margins, which suits documentation packs and anything that will be printed. “Match image size” makes each page exactly the pixel dimensions of its image, which keeps a screen capture pixel-perfect with no surrounding white space — the better option for design review and for wide screenshots that would otherwise be shrunk to fit a portrait page.

Conversion runs entirely in your browser and is lossless, so a screenshot of small type stays sharp rather than picking up JPEG artefacts. Very high-resolution captures make correspondingly large PDFs; if the result needs to be lighter, Compress PDF handles that in a second pass.