How do I find out what fonts are used in a document/picture?
For PDFs, I know of two ways you can find out the fonts of a file.
If you have Adobe Acrobat/Reader, you can find out the fonts used in the file by looking at the Fonts tab in the document's properties (CTRL+D or File->Properties->Fonts). There you will see a list of all the fonts used in the document. It can take several seconds to compile the entire list if a document uses many fonts. If you're using Evince as your PDF-viewer you can find the same function under the properties menu there as well.
You can use the tool pdffonts. This is included as part of xpdf, which is available in pre-compiled binaries for both Linux and Windows. The program's website says that people have reported being able to compile it on OS X and other systems.
To find out which fonts are used on a specific page, e.g. page 10, pdffonts offers the following command
pdffonts.exe -f 10 -l 10 "c:\file\path\myfile.pdf"
which can be put in loop to show the fonts page by page (here for Windows until page 100):
for /l %i in (1,1,100) do (echo.PAGE %i & "pdffonts.exe" -f %i -l %i "c:\file\path\myfile.pdf")
There is a dedicated »Type ID« sub-forum on typophile.com. About one to two dozen type id questions are asked and answered there every day. Whenever WhatTheFont doesn't help, this is probably the best place to go.
As a third solution, midway between consulting an expert and consulting an automat, Identifont offers a semi-automated method which can be fun to use, and pretty instructive too, as you practice how to look at a typeface.
I want to state first that I'm affiliated with the solution I present as I'm the chief software engineer behind it, but if you check the solution yourself, I think you 'll be convinced I have my reasons to be proud about it.
We have created "Find my Font" a software application that runs on a Windows or Mac PC and identifies the fonts of a given bitmap image. It searches both our online font database (70.000+ fonts) and the fonts on your computer and compares them against the letters you select on your digital image. You are provided with a list of matching (and similar) fonts along with the matching accuracy for each one. You may also type text and see how well the matching went (font preview). The main features of the software are:
Great matching accuracy even on small and low quality images of just 10 or 20 pixels high
Super fast: Online speed: About 10 secs for 70.000+ fonts. Local Speed on average PC: About 5 millions fonts / min
The online database provides previews and buy or download links for both commercial fonts (Myfonts, Fontshop, ...) & free fonts (Dafont, Google Web Fonts)
You can browse your local fonts and find similar ones
You can capture & use any color image as input without special pre-processing: The application provides all required tools (if required) for restoring perspective, size, contrast and isolate any connected or script letters.
Local fonts supported: You can use any True Type (TTF) / Open Type (OTF) or older Type-1 Postsrcipt fonts you may have on your computer.
You can find more information or download a 30 days trial at: http://www.findmyfont.com/index.php/find-my-font/features
Regards
Fivos Vilanakis
Chief Technical Officer Softonium Developments
PS: "Find my Font" is far more accurate than WhatTheFont or WhatFontIs services as it works with smaller images and automatically recognizes artificially bold or slanted fonts.