Image to PDF Converter

Select one or more images of any common format and this assembles them into a single PDF, one image per page, in the order you selected them — the everyday job of turning a folder of scanned pages or photographed documents into one file that can be emailed or archived as a whole rather than as loose images.

Choosing a page size

A4 and Letter both centre each image on a fixed, standard page, adding white margins where the image's proportions do not exactly match the page — the right choice when the PDF is meant to print consistently, such as a stack of scanned documents. Fit instead sizes each page to match its image exactly, with no margin, which suits photos or screenshots where preserving the exact aspect ratio matters more than matching a printable page format.

Why the output uses JPEG internally

Every image is re-encoded as JPEG before being embedded in the PDF, regardless of its original format, because the PDF format can embed JPEG data directly without needing an external compression library — that keeps this entirely client-side and keeps file sizes reasonable. The trade-off is that any transparency in the source image is flattened onto a white background first, since JPEG has no concept of a transparent pixel.

The quality slider controls that JPEG compression level directly — lower it when the resulting PDF is larger than needed and some loss of sharpness is an acceptable trade, raise it when the images contain fine detail or small text that needs to stay crisp.