How do I extract the text from a image file?

Some optical character recognition methods are designed for omni-font, meaning that they can recognize a variety of fonts as long as they maintain a fairly standard shape. You font sample is very challenging, but an omni-font recognition method should be able to detect o, d, b, i, l, f, and y. It might not be able to detect the letter "s", though. Some optical character recognition packages, such as OCRopus, allow the user to train on samples.

Probably, you are looking for the OCR? If it does not help you, then you might have to use human cloud (cloud labor - combination of Technology and Humans). Heard of http://www.cloudfactory.com/solutions?

Gnginzzring Truth" Books mcommgndzd bg Professors in class = ngvzr found in thz Coll¢gz Isibrarg Pretty bad, eh? That's the results on the above image using the 'Project Naptha' extension in Chrome. It works pretty well except on the more challenging stuff -- like your example with its embellished, almost script like font. Still, dead easy to use. Right click -- copy text. And free. The old 'get what you pay for' law.

OCR(Optical Character Recognition) can help you to resolve recognize text from image, like jpeg, png, tiff, and gif. Online OCR can provide a 99% accurate of text recognition, and it's free and easy to use. you just need upload your image file, this ocr tool can http://www.online-code.net/ocr.html, and save the text to the searchable PDF or plain txt file. the best open source of OCR is tesseract, support more than 100 languages types.