Free Converter
PNG to PDF Converter
Convert multiple images into a single PDF document instantly. Secure, fast, and completely free.
Drag & Drop images here
Supported formats: PNG, JPG. Max file size: 50MB.
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Convert multiple images into a single PDF document instantly. Secure, fast, and completely free.
Supported formats: PNG, JPG. Max file size: 50MB.
Converting PNG to PDF is the standard way to package a series of images as a single document — for printing, emailing, archiving, or submitting via systems that expect PDF. The conversion does not transform the image content; it embeds each PNG into a PDF page sized to fit. The output is a portable, paginated container around the original images.
This tool generates the PDF locally in your browser using jsPDF. Each PNG you upload is embedded into the document at its native resolution; page size is set to either the image dimensions or a standard paper size (A4, US Letter) depending on the option you choose. Multiple PNGs become multiple pages in upload order, which you can rearrange before generating.
Because PDF can embed PNG natively, no re-encoding happens — the PNG bytes are wrapped in the PDF object stream as-is. The output retains the lossless quality of the source images. The result is suitable for printing, sharing, or feeding into any tool that consumes PDF.
Email systems, government portals, and academic submission systems often expect PDF rather than image attachments. Converting locally avoids upload errors and lets you control page size, ordering, and orientation before submission. PDF is also the format most printers expect; sending a PDF guarantees consistent rendering across copy machines, home printers, and print-shop equipment.
PDFs are also more durable as documents. Recipients can highlight pages with a single attachment rather than dealing with multiple images. Filename clutter is replaced with a single document. Page numbers and consistent paper size make printing predictable. For multi-image documents — scanned receipts, contract pages, photo evidence, design contact sheets — PDF is the right destination.
Add images, choose page settings, generate. Multi-image documents are bundled in upload order.
PDF (ISO 32000) is a tagged document format consisting of an object table, content streams, and a cross-reference table. Images can be embedded directly using the /Image XObject type with a /Filter setting matching the source encoding — /FlateDecode for PNG-style DEFLATE-compressed bitmaps. jsPDF builds the object graph in JavaScript and serializes it to a PDF byte stream client-side.
Page sizing: when you pick Auto, jsPDF sets the page MediaBox to the image dimensions (in points, 1pt = 1/72 inch). When you pick A4 or US Letter, the image is scaled to fit the page with a small margin. The image bytes themselves are unchanged; only the bounding box is adjusted.
Multi-page documents are constructed by calling addPage() between embeds. Each PNG becomes a Page object with a single Image XObject inside. The output PDF version is 1.4, supported by every PDF reader released in the last 20 years.