Assembly
JPG to PDF
Photographs of documents, scanned receipts, a set of certificates. Drop them in, put them in order, and get one PDF with a page per image.
Result
Fit or fill, and why the margin matters
Fitting places the whole image inside the page and leaves white space where the proportions do not match. Filling scales the image until it covers the page and crops whatever hangs over the edge. For photographed documents, always fit: filling will cut off the edges of the paper, which is usually where the signature is.
The margin exists because most printers cannot print to the edge of a sheet, and a PDF with content running into the last few millimetres gets clipped or scaled down at print time. Ten millimetres is a safe default. Set it to zero if the file is only ever going to be read on screen.
Keeping the file small
Photographs are embedded as JPEG at the quality you feed in, so a set of twelve megapixel phone photos makes a very large PDF. If size matters, compress the images first with the 200 KB compressor, or run the finished document through compress PDF.
Common questions
Can I put several photos on one page?
Not from this page; each image gets its own page. For a contact sheet, place the images in a document editor and export from there.
Does it handle PNG as well as JPG?
Yes. PNGs with transparency are placed on white, since a PDF page has no transparency of its own.
Why is my PDF enormous?
Because the images are. A PDF is a container; it stores what you give it. Reduce the photos before building, and the document shrinks in proportion.
Other PDF tools