Combine PNGs into a PDF
Convert and combine multiple PNG images into a single PDF document. Customize your page size and orientation. We run all conversions locally on your device to keep your files secure.
Choose PNG files
Drag and drop multiple files at once
How to use
- 1
Select or drop the PNG files you want to merge. We arrange the PDF pages based on your upload order.
- 2
Add or remove files to adjust the sequence. Double-check your page order before merging.
- 3
Choose your page size and orientation. A4 portrait works best for vertical screenshots.
- 4
Click "Combine into PDF" to merge your files and download the PDF immediately.
FAQ
- How does the PDF handle transparent PNG backgrounds?
- We automatically place transparent PNG areas onto a clean white background in the PDF. We recommend verifying your layout before converting to ensure it looks right for print or email.
- Can I place multiple images onto a single page?
- Currently, we center each image on its own page. To combine images, use an editor to stitch them together before uploading. We are evaluating multi-column layouts for a future release.
- Will the PDF maintain high print quality?
- Yes. We embed your PNGs at their original resolution to keep text and graphics sharp on screens and in print. Start with high-resolution PNGs to prevent blurry print results.
Transparency Doesn't Survive the Move to PDF
This is the first thing to know when bundling PNGs into a PDF. The moment a transparent area lands on a PDF page it is fixed in place over a white background. A logo with a transparent background becomes a logo on white paper.
Most of the time that's not a problem — it's the point. PDF exists for printing and document submission, and paper has no concept of transparency. But if the transparency itself matters to the asset, keep it as PNG, or use the PNG merge tool when you need several images in one file.
This Tool Is Really for Screen Captures
There's a category of material this fits especially well: screenshots, UI captures, tables and diagrams — anything where text has to stay legible. PNG is lossless, so letter edges arrive in the PDF exactly as they were.
Route the same material through JPG first and you get compression artefacts around the text, which wrapping it in a PDF does nothing to remove. And for text-led images PNG costs almost nothing in size: saving the same screenshot gives 94 KB as PNG against 97 KB as JPG quality 80 — PNG actually came out smaller.
Photographs with full backgrounds flip that completely. The same photo is 3,591 KB as PNG and 269 KB as JPG. If you're bundling a set of photographs, converting them to JPG first and then building the PDF gives you a far lighter file.
Material That Belongs in One Document
- Turning a set of screen captures into a single report document
- Producing a PDF of tables and diagrams without degrading the text
- Uploading to a system that accepts documents but not loose images
- Building a step-by-step manual in a fixed order
Why the Resulting PDF Gets Heavy
A PDF holds your images; it doesn't re-compress them. The output size is therefore close to the sum of what you put in. Twenty high-resolution captures make a correspondingly heavy PDF.
The fix is to shrink the images before bundling, not to compress the PDF afterwards. For a document that will be read on screen, resizing captures to around 1,600px wide usually leaves the text perfectly readable. If it needs printing or close inspection, keep the originals — so decide the purpose first.
Page Order and Orientation
Upload several images and pages are generally ordered by filename. Name them `1, 2, … 10` and string sorting puts `10` before `2`. Pad the numbers as `01, 02, … 10` and the problem disappears.
Let the shape of the capture pick the orientation. Tall mobile screenshots belong on portrait pages, wide desktop screens on landscape pages — that keeps margins down and the content large.
Related guides
How to Combine Images into One PDF (and What to Watch For)
Bundling scans, receipts, or pages into a single PDF locks the order and makes sharing easy. Here is how to handle page order, page size, and quality.
Why Your PNG Still Has No Transparent Background
Converting a JPG to PNG will not make its background transparent on its own. Transparency is a container capability, not content. Here is how to actually get a transparent background.