picture_as_pdf Images to PDF Converter star

How It Works

Each JPG, PNG or WebP you select is embedded into the output PDF as an Image XObject — a self-contained image resource referenced from that page's content stream, positioned to fill the page. This is the same mechanism every PDF creation tool uses, and it means the image's pixel data is packaged into the file rather than redrawn: PNG source images need no lossy re-encoding, and JPEG sources are simply copied in with a light re-compression pass at your chosen quality percentage.

What trips people up is the interaction between pixel dimensions and page size. A PDF page has a physical size in points (72 points per inch), but the embedded image is just a grid of pixels with no inherent physical size of its own — the ratio between the two determines the effective print resolution. A 3000×2000px photo placed on a page sized for 100 DPI prints noticeably larger and softer than the same photo on a page sized for 300 DPI, even though the underlying image data is byte-for-byte identical. This tool sizes each page to match its image's pixel aspect ratio directly, so nothing is cropped, but if you plan to print rather than just view on screen, a low-resolution phone screenshot will look softer at full page size than a high-resolution camera photo.

Example: photographing a signed contract at your phone's native resolution (commonly 3000-4000px on the long edge) and converting it here typically yields a crisp, easily-readable page; a 600px-wide image cropped from a chat screenshot will still convert successfully, but will look visibly blurry if the recipient prints it at full page size.

What to Know

• Order matters: pages appear in the order shown on screen — drag to reorder before downloading, since there is no way to reorder pages inside the finished PDF afterward without another tool.
• Quality vs. size trade-off: raising JPEG quality increases file size roughly linearly; 85% is a reasonable middle ground for scanned documents where text needs to stay legible but file size still matters for email attachments.
• PNG stays lossless: screenshots and graphics with sharp edges or transparency are best kept as PNG source images, since re-encoding them to JPEG can introduce visible compression artifacts around text and hard edges.
• Nothing leaves your device: reading, resizing, embedding and assembling the PDF's byte structure all happen in browser memory — closing the tab discards everything.