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1. stackoverflow.com › questions › 10656184Is there a field in which PDF files specify their encoding?

   stackoverflow.com › questions › 10656184

   A PDF file may define new encodings by taking a "base" encoding (say, WinAnsiEncoding) and redefining a few bytes, so a PDF author may, for example, define a new encoding named "MySuperbEncoding" as WinAnsiEncoding but with byte value 65 changed to mean character "ntilde" (this definition goes inside the PDF file), and then specifying that some strings in the file use encoding "MySuperbEncoding".

2. en.wikipedia.org › wiki › PDFPDF - Wikipedia

   en.wikipedia.org › wiki › PDF

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   PDF can specify a predefined encoding to use, the font's built-in encoding or provide a lookup table of differences to a predefined or built-in encoding (not recommended with TrueType fonts). [2] The encoding mechanisms in PDF were designed for Type 1 fonts, and the rules for applying them to TrueType fonts are complex.

3. www.prepressure.com › pdf › basicsThe PDF file format - Prepressure

   www.prepressure.com › pdf › basics

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   General conventions. Here is some useful information in case you intend to open PDF-files to edit them straight away: PDF files are either 8-bit binary files or 7-bit ASCII text files (using ASCII-85 encoding). Every line in a PDF can contain up to 255 characters. Every line ends with a carriage return, a line feed or a carriage return followed ...

4. blog.idrsolutions.com › understanding-the-pdf-fileUnderstanding the PDF File Format - Java PDF Blog

   blog.idrsolutions.com › understanding-the-pdf-file

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   Mar 17, 2022 · One of our developers bravely set out to write the ‘Hello World’ tutorial of PDF files, creating a PDF file from scratch manually, in a text editor. Follow the series: Part 1: PDF Objects and Data Types. Part 2: Structure of a PDF file. Part 2.5: Create a non working PDF.

5. pdfa.org › understanding-utf-8-in-pdf-2-0Understanding UTF-8 in PDF 2.0 – PDF ... - PDF Association

   pdfa.org › understanding-utf-8-in-pdf-2-0

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   In 2017, PDF 2.0 introduced UTF-8 encoded strings as an additional format for PDF text strings, while maintaining full backward-compatible support for the existing UTF-16BE and PDFDocEncoded text string definitions. Since PDF 1.7 was originally published back in 2006, UTF-8 had become the lingua franca of the web, operating systems, and many ...

6. www.prepressure.com › pdf › basicsFonts in PDF files | How to embed or subset a font in a PDF

   www.prepressure.com › pdf › basics

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   Aug 21, 2020 · Another important aspect of font handling is encoding. This refers to the mapping of a character code to a particular glyph (character shape) description. Each font in a PDF uses a specific type of encoding, either a standard or a custom one. The following types of encoding are supported by the PDF file format: StandardEncoding; WinAnsiEncoding

7. People also ask

   What is PDF encoding?

   • PDF 1.0 originally defined only PDFDocEncoding as the default text encoding used throughout PDF for “ outline entries, text annotations, and strings in the Info dictionary ” (Adobe PDF 1.0, p.185).

   Understanding UTF-8 in PDF 2.0 - PDF Association

   pdfa.org/understanding-utf-8-in-pdf-2-0/

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   What is pdfdocencoding?

   • PDFDocEncoding is a predefined text encoding unique to PDF. It supports a superset of the ISO Latin 1 character set which happens, as Adobe’s PDF Reference 1.2 puts it, to be “ compatible with Unicode in that all Unicode codes less than 256 match PDFDocEncoding ” (Adobe PDF 1.2, p.47).

   Understanding UTF-8 in PDF 2.0 - PDF Association

   pdfa.org/understanding-utf-8-in-pdf-2-0/

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   Can a PDF file have different encoding?

   • A quick look at the PDF specification seems to suggest that you can have different encoding inside a PDF-file. Have a look at page 86. So a PDF library with some kind of low level access should be able to provide you with encoding used for a string.

   Is there a field in which PDF files specify their encoding?

   stackoverflow.com/questions/10656184/is-there-a-field-in-which-pdf-files-specify-their-encoding

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   Is it possible to encode text in a PDF document?

   • Your answer is actually misleading - it's perfectly possible to encode text in a PDF document in such a way that it cannot be extracted in a meaningful way. If the fonts used, don't use simple encodings and there is no "ToUnicode" information present, you're left with something you can print but not extract / convert to say UTF-16.

   Is there a field in which PDF files specify their encoding?

   stackoverflow.com/questions/10656184/is-there-a-field-in-which-pdf-files-specify-their-encoding

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   Is a PDF A UTF-8 file?

   • Thus, a PDF never is UTF-8 encoded. PDF (before version 2.0) -files can be either a 8-bit binary file or a 7-bit ASCII (-85) text file. (www.Prepressure.com/pdf/basics/fileformat is a good article describing the PDF file format in more detail).

   Is my pdf file encoded in UTF-8? - Stack Overflow

   stackoverflow.com/questions/42115883/is-my-pdf-file-encoded-in-utf-8

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   Can a PDF file be encoded internally in ad-hoc encoding?

   • So, the answer to your question is: characters within a PDF file can well be encoded internally in an ad-hoc encoding made on the spot for that specific PDF file. PDF parsers should make the appropriate substitutions when necessary.

   Is there a field in which PDF files specify their encoding?

   stackoverflow.com/questions/10656184/is-there-a-field-in-which-pdf-files-specify-their-encoding

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8. www.ibm.com › docs › enPDF File Settings - IBM

   www.ibm.com › docs › en

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   PDF character encoding determines the character set that is used to create PDF files. You can choose to use Windows1252 encoding, the standard Microsoft Windows operating system single-byte encoding for Latin text in Western writing systems, or unicode (UTF-16) encoding. By default, PDF character encoding is determined automatically, based on ...