Title: Some funny stuffs about pdf
Date: 2012-02-22 09:06

- The [specification]( https://www.adobe.com/devnet/pdf/pdf_reference.html ) is more than 1300 pages long.
- The first version is 10 years old.
- Adobe has his own specification to “extend” the existent one.
- Adobe is not the only one that “extends” pdf specification.
- PDF can embed [javascript](https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdf_reference_1-7.pdf#page=709),
  with a [custom standard library]( https://wwwimages2.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/js_api_reference.pdf)
	[full of](https://wwwimages2.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/js_api_reference.pdf#page=36)
	[crazy](https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/js_3d_api_reference.pdf)
	[features]( https://wwwimages2.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/js_api_reference.pdf#page=537).
- PDF can be scripted via a [subset of PostScript]( https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdf_reference_1-7.pdf#page=176)
- PDF can [embed Flash](https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdf_reference_1-7.pdf#page=1123)
- PDF can [embed 3D objects](https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdf_reference_1-7.pdf#page=789) (because why not?).
- PDF can embed virtually any data that you want, even [video](https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdf_reference_1-7.pdf#page=784)!
- PDF can/may be compressed, or not.
- PDF can do some kind of ghetto-versionning
- The PDF format is a piece of shit.