Non unicode to Unicode conversion, for any font!

I have a html file with text encoded in a non-unicode font. I need to convert that file to unicode. I searched for a convertor. But, most of the convertors work for only a list of fonts, not for all fonts.

My font is very sp开发者_如何转开发ecific, text is in Devanagari script. I have the file, I have the font, now, please suggest me a tool or technique. Thanks.

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Unicode is not about fonts, it is about encoding. You need to find a converter that can convert your text to Unicode. What is the encoding of your text?

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Apache Tika has the ability to pull text from PDF files via knowledge of font behavior. So if the file is in fact a PDF you have a chance. If you have a text file full of font indices in no particular encoding, you have a big programming job ahead of you.