Free Online PNG to PDF Converter
PNG screenshots, diagrams, and graphics are easy to combine into a single document with LovePDFImg's PNG to PDF tool. Add your images, choose a page size option, drag to reorder if needed, and convert everything to a PDF in seconds - all in your browser.
Because PNG is a lossless format often used for screenshots and diagrams with sharp text or lines, converting to PDF preserves that clarity exactly - there's no re-compression that could blur small text or fine details. Any transparent areas in your PNGs are placed on a white background by default in the resulting PDF page.
Combining screenshots into a single PDF is a common step when documenting a process, compiling a step-by-step guide, or archiving a series of diagrams for a report - much easier to share as one file than as several separate images.
How the PNG to PDF Tool Works
Using pdf-lib, the tool creates a new PDF and embeds each PNG image as a full page, in the order you set. Because PDF's native image object types support PNG directly, embedding is a straightforward copy operation with no re-encoding - your image data remains exactly as it was in the original file. Depending on your chosen page setting, the image is scaled to fit within the page margins, stretched to fill the page, or placed at its original pixel dimensions.
Who Uses PNG to PDF?
Businesses: Combine a series of screenshots into a single PDF for documentation or process guides.
Designers: Bundle exported PNG mockups or diagrams into one shareable document for client review.
Students: Combine screenshots of assignments or diagrams into a single submission-ready file.
Developers: Assemble error screenshots or interface diagrams into a bug report or documentation PDF.
Why Choose LovePDFImg for PNG to PDF Conversion?
iLovePDF, Smallpdf, and PDF24 all offer image-to-PDF conversion, typically via a server upload. LovePDFImg builds the PDF entirely in your browser using pdf-lib, so your PNG files stay on your device throughout. There's no account requirement, no daily cap on conversions, and the output has no added watermark.
Technical Details
PNG images are embedded into the PDF using their native compressed data directly, since PDF's image object format supports PNG's lossless compression scheme natively. This is why the conversion is nearly instant and doesn't introduce any quality loss - the pixel data in the resulting PDF page is identical to the original PNG. This differs from JPG embedding, which uses JPG's own lossy compressed data, and from WebP, which typically needs to be decoded and re-encoded before embedding.
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