How to convert PNG to PDF
- Drop your PNG files onto the box above, or press Browse files to select them.
- Reorder the list with the arrows so the pages come out in the sequence you want.
- Pick the paper size and orientation, landscape usually suits screenshots better.
- Choose fit or fill, and set a margin if you are fitting.
- Press Create PDF and download the result.
What this converter handles
- Combines up to forty PNG images into one document, one per page.
- Handles transparency by placing the image on the page's white background.
- Preserves the crispness of screenshots and line art, which PNG stores losslessly.
- Offers four paper sizes in either orientation, with an adjustable margin.
- Keeps proportions intact when fitting, so diagrams are never stretched.
- Processes everything in your browser with no upload and no watermark.
What PNG brings to a PDF
PNG is a lossless format built for flat colour and sharp edges, which makes it the natural companion for screenshots, charts, wireframes, diagrams and anything exported from design software. Those are precisely the things people need to hand over as documents: a bug report with annotated screenshots, a design review, a set of charts for a board pack.
Placing them in a PDF gives you one file that opens identically everywhere, prints predictably, and can be page-numbered, merged and protected like any other document. It also fixes the practical problem that many upload forms accept PDF and refuse a folder of images.
Transparency becomes white
PNG supports an alpha channel and a PDF page does not have anything behind it, so transparent regions are placed against the page itself, which is white. A logo designed to sit on a dark header will therefore appear on white and may become invisible if its artwork is also white.
When that matters, flatten the image onto the colour you want first. The PNG to JPG converter has a fill colour control for exactly this, and converting to JPG before building the PDF also reduces the file size considerably for photographic content.
Orientation is worth a moment's thought
- Landscape for desktop screenshots, spreadsheets and wide charts, a 16:9 capture wastes most of a portrait page.
- Portrait for phone screenshots, documents and anything taller than it is wide.
- A3 when detailed diagrams need to stay legible in print.
Every page in the output uses the same size and orientation, so a mixed set of phone and desktop captures involves a compromise. Fitting scales each image to sit correctly whichever way round it is, which is usually good enough; splitting the batch into two conversions and merging them with the merge tool is the tidier answer when it matters.
Resolution, not paper size, decides sharpness
A common misunderstanding is that choosing A3 makes an image sharper. It does not. Sharpness depends on how many pixels the image contains relative to the physical size it is printed at. A 900-pixel screenshot stretched across an A3 page is blurrier than the same file on A5, because the pixels are spread further apart.
If the output is destined for print, work out what you need with the DPI calculator before converting. For screen use it rarely matters, since readers zoom rather than print.
Size and privacy
PNG is lossless, so screenshots embed at full weight and a forty-page document can become very large. Running the images through the PNG compressor first, or the finished document through the PDF compressor, brings it back under control. Nothing is uploaded at any point, internal dashboards and unreleased designs stay on your machine.