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Glossary Data & Encoding

PDF (Portable Document Format)

PDF is a file format for documents that look the same on every device, bundling text, fonts, images and layout into one file.

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In more detail

A PDF starts with %PDF- and ends with %%EOF, with a cross-reference table that lets a reader jump to any page. Merging joins the page lists of several files, splitting extracts a range, reordering rearranges pages and numbering stamps a number on each.

Try these tools

PDF Merger

Free PDF merger.

PDF Splitter

Free PDF splitter.

PDF Page Organizer

Free PDF page organizer.

PDF Page Number Adder

Choose the position, style such as Page 3 of 10, start number, size and colour, skip the first page.

PDF to Image Converter

Turn some or all pages of a PDF into PNG or JPG pictures at 72 to 600 DPI.

See also

  • Glossary Magic bytes
    Magic bytes, or a file signature, are the fixed bytes at the start of a file that identify its true format regardless of its name or.
  • Glossary Metadata
    Metadata is data about data: the hidden or secondary information a file carries about itself, such as its author, creation date.
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