Convert PNG screenshots, scans and graphics into one PDF. Choose Fit to image, A4 or US Letter pages, control margins and download a multi-page document in the selected order.
PNG supports transparency, while a PDF page is normally viewed against a page background. Check transparent logos, diagrams and screenshots in the downloaded PDF because appearance can vary with the source PNG and PDF viewer.
Drag & drop files here
or use the button below · processed locally on your device
Output settings
Free file tool
Free PNG to PDF online
Combine one or more PNG images into a multi-page PDF using the existing browser converter, with Fit to image, A4 or US Letter page sizes and adjustable margins. Use the tool directly in your browser with no sign-up. It supports multiple source files in the same session, so it also works as a free batch tool when you have more than one file.
Free to use
No payment required for this tool.
Batch conversion
Queue multiple source files in one session.
Browser-based
The conversion workflow runs from the web page on your device.
No sign-up
Start the file workflow without creating an account.
What PNG to PDF is useful for
✓Combining photos or scans into one document
✓Creating a printable PDF from multiple images
✓Keeping files in a single shareable document
Input and output checks
Accepted input: png.
✓Open the downloaded output before deleting or replacing the source file.
✓Check the details that matter for your use: page count, dimensions, orientation, text, duration or metadata.
✓For batch jobs, confirm every queued file produced the expected output.
✓If quality or size matters, compare more than one settings combination before choosing the final copy.
How to use this calculator: PNG to PDF
1Choose one or more PNG images. Keep them in the order required for the final document.
2Select Fit to image, A4 portrait or US Letter according to how the PDF will be viewed, printed or submitted.
3Set a margin when the image needs white space around it.
4Review the filenames and settings, then choose Create PDF.
5Download the result and check sharp text, page order, margins and transparent areas in your usual PDF viewer.
Worked conversion example
Example: add four phone photos in the required order, choose A4 and the desired margin, then create the PDF. The engine places one image on each page and returns one four-page PDF.
Accepted input
png
Batch behaviour
Multiple files supported
Output settings
Setting
Example/default
Effect
Page size
Fit to image
Changes how the output is encoded or arranged; preview the result before relying on it.
Margin (pt)
0
Changes how the output is encoded or arranged; preview the result before relying on it.
Paper orientation
Portrait
A4 and Letter only. Fit to image follows the image shape. JPEG EXIF orientation is respected.
Image print DPI
72
Fit to image: page inches = pixels ÷ DPI, plus margins. A 1200 × 1800 image at 300 DPI is 4 × 6 inches. This sets physical size; it does not add detail.
Keep small images at their print size
false
A4/Letter: prevents enlargement beyond the chosen print DPI. Images are always fitted without cropping or stretching.
How the browser process works
Combine one or more PNG images into a multi-page PDF using the existing browser converter, with Fit to image, A4 or US Letter page sizes and adjustable margins. The page sends the selected file and settings to its images-to-pdf browser engine, creates a new output and downloads it without overwriting the source.
One image per PDF page, with original JPG/PNG data embedded without lossy re-encoding. Set page order, paper orientation and print DPI; photographed text stays an image unless you use OCR. Limits: 50 files, 200 MiB per batch, 40 megapixels per source image.
Privacy, quality checks and limitations
Keep the original file until the downloaded output has been opened and checked.
Verify page count, orientation, dimensions, text legibility, audio/video duration and metadata relevant to your use.
Browser-local processing reduces routine upload exposure, but your device, browser extensions and download location still matter.
A converted preview is not proof of legal authenticity, archival compliance, accessibility or digital-signature validity.
Choose settings for your actual task
Combine screenshots or scanned certificates without re-encoding PNG pixels as JPEG. Source alpha transparency is embedded; most PDF viewers display the underlying page as white.
For a print submission, use A4, Auto orientation and 18 pt margins (6.35 mm). For an exact 4 × 6 inch page from a 1200 × 1800 image, use Fit to image, 300 DPI and zero margin. The print DPI controls physical size; it does not resample the original image.
Paper images are fitted proportionally without cropping. A small screenshot can look blurred when enlarged to A4; enable Keep small images at their print size. Text in photos remains non-searchable, and this tool does not validate a certificate or add a cryptographic signature.
Files stay in this browser tab. Libraries may load on first use; no file upload or account is needed. Keep originals and inspect the downloaded result. Practical limits: 50 files / 200 MiB input, 200 exported pages, 16 megapixels per rendered PDF page, 40 megapixels per input image.
Use PNG to PDF when screenshots, scanned pages, diagrams or lossless graphics need to be shared as one document. Each PNG becomes a PDF page, and the page-size control lets you keep source dimensions or place the image on A4 or US Letter.
How to convert PNG to PDF
Choose the PNG screenshots, scans or graphics.
Confirm the order in which they should appear.
Choose Fit to image, A4 portrait or US Letter.
Set a margin if the content needs space around the page edge.
Create and download the PDF, then inspect the result.
PNG to PDF worked example
For a four-step software guide, select step-1.png through step-4.png in sequence and choose A4. The converter creates a four-page PDF with one screenshot on each page, scaled proportionally inside the chosen margin.
If labels look too small, the source screenshots may have too little resolution for the chosen page size. Use Fit to image or provide higher-resolution PNG files rather than assuming that PDF conversion can recreate missing detail.
Choose the right PNG page setting
Fit to image
Keeps a page close to the PNG's own pixel dimensions.
A4 portrait
Useful for document-style sharing, printing and many submission workflows.
US Letter
Useful when a US Letter page is specifically expected.
Transparency
May reveal the PDF page or viewer background; inspect the downloaded file.
PNG quality and output checks
Small labels and line art are readable at normal zoom.
Transparent areas display as expected.
Each screenshot or scan appears on the correct page.
No page contains unintended blank space from an unsuitable margin.
The receiving service accepts image-based PDF pages.
Related PDF Tools
Continue with a related PDF task using another OneCalcApp tool.
Choose your PNG files, select Fit to image, A4 or US Letter, set the margin and create the PDF. Each selected PNG becomes one page in the output document.
Can I combine several PNG screenshots into one PDF?
Yes. Select multiple screenshots in the required order. The converter places them into one multi-page PDF.
Does PNG to PDF keep sharp text and diagrams?
The source PNG is embedded as image content rather than converted to JPG. Readability still depends on the original PNG resolution and the amount of scaling needed for the selected PDF page.
What happens to PNG transparency in a PDF?
The PNG is placed on a PDF page, and transparent areas may show the page or viewer background. Check the downloaded PDF when transparency is important.
Can I make an A4 PDF from PNG images?
Yes. Choose A4 portrait and the tool proportionally centres each PNG inside the page margins.
Will my original PNG files be changed?
No. The converter creates a new PDF for download. Keep the source PNG files until you have verified the result.
Related Guides & Articles
Step-by-step guides for this conversion and related file formats.
