How do I combine several PNG files into one PDF?
Add the PNG files, drag them into the desired order, and create the PDF when the sequence looks right. You can rotate an individual page by 90 degrees before output.
For diagrams, UI captures, and PNG graphics
PNG to PDF Converter
Combine ordered PNG pages into a browser-made PDF with layout controls. No sign-up required.
Choose images & startConverter
Your pictures are placed into the document as images; writing inside a photo remains part of that image.
Enable JavaScript to select, arrange, and convert your images directly in this browser.
Build a visual sequence that reads in order
Turn a set of interface screens, wireframes, flowcharts, or chart exports into one PDF without leaving the browser. Add PNG files, place them in the intended reading order, and rotate individual pages by 90 degrees when an asset arrives sideways. Conversion is performed in the browser; your images do not upload for conversion. This is useful for packaging visual review material when sequence matters.
Set the page around the graphic
Pick A4, A5, Letter, Legal, or a custom page size to suit a handoff, review board, or print workflow. Add margins to create breathing room around a dense dashboard capture, or use a compact layout for a multi-screen packet. An optional cover can identify the set at the front, while page-by-page rotation lets portrait and landscape PNGs sit in the same document.
Choose quality with small UI details in mind
Choose JPEG quality based on the output you need. A higher setting may suit detailed interface elements, while a lower setting may be useful when a lighter PDF is preferable. The quality setting may use lossy PDF encoding, so evaluate small labels, thin lines, and gradients in the finished file. If a PNG includes transparency, the result can be flattened against a light background; img2doc does not guarantee a transparent PDF.
Review inputs before making the PDF
Prepare PNG graphics in the order you want readers to see them, then use the page preview to check the set before creating the PDF. This workflow is for image pages rather than automatic cleanup: there is no photo auto-straightening and no promise to change image dimensions. GIF files use only the static first frame, and HEIC files are unsupported. img2doc also offers DOCX and PPTX creation for other image-document tasks.
FAQ
Can I crop or adjust a PNG before putting it in the PDF?
Yes. Use crop ratio presets, then adjust brightness or contrast and apply available filters or sharpening as needed for the graphic.
Which PDF page sizes can I choose?
Choose A4, A5, Letter, Legal, or a custom page size. You can also set margins and add an optional cover page.
What does the JPEG quality setting change?
It controls the image encoding used in the PDF and may use lossy compression. Review fine interface labels, lines, and gradients after creating the file, especially at lower settings.
Will transparent PNG areas stay transparent in the PDF?
Not necessarily. Transparent areas may be flattened against a light background, so there is no transparent-PDF guarantee.