![]() Followed by creating a set of glyphs to be used in the lookup subtables.We’ll start with a brief outline of definitions.This tutorial will show you how to create contextual ligature lookup tables in Fontforge. I hope this tutorial has been of assistance and you can put some of the information to good use when extracting fonts from a PDF.įont Tutorials are distributed under an open source MIT License.How to Create Contextual Ligature Lookup Tables in Fontforge That brings us to the end of this tutorial. In this situation Fontforge displays two (2) pop up dialogue boxes outlining the reason why.Ī) The dialogue box advises that the font is encrypted and cannot be read.Īs a result, there’s nothing more that can be done on this PDF to extract it’s font using Fontforge. On this occasion, Fontforge is not able to read the PDF. To be able to view all the extracted glyphs, neatly on screen, I’ll go ahead, and delete all the cells where the glyph is represented as a ‘square’.Īnd to hide these empty glyphs I’ll need to go back and,Ī) click on ‘Encoding>Compact’ which will expand the table, thenī) repeat this action by clicking on ‘Encoding>Compact’.įor the next example, I repeated the same steps above only selecting a different PDF file, ‘FontNaming-ktlf.pdf’. ![]() With only the extracted glyphs visible, you’re now in a position to decide what to do next. To view, only the cells which have glyphs, You’ll be taken to ‘Font View’ where you can see the extracted glyphs.ī) go ahead with the glyphs that have been extracted, or If Fontforge is able to detect glyphs from the PDF, a dialogue box called ‘Pick a font’ will pop up listing the fonts detected within the PDF.Ī) Select your preferred font and click ‘OK’. You must complete step b) before c) for PDF files to be recognized. Start by opening Fontforge, and on the first dialogue box,ī) Select ‘Extract from PDF’ from the list,Ĭ) Then, locate and select your PDF file,īe aware that completing step c) before b) will not show any PDF file to select. With this knowledge, we’ll begin with an example that produces a partial font extraction. When processing your extraction, Fontforge may display error dialogue boxes.Ī) If there are errors in the file, you can choose to ignore them or save the file and edit them.ī) Most of the errors can be fixed automatically if you click “Fix” enough times. Most PDFs which are online, only embed subsets of the font and not the full font.Ī) Extracting a subset of a font is only useful in a very limited scope, if at all. Where all the glyphs are present in the PDF document, Fontforge may not extract them all.Ī) This could be down to Fontforge’s code capabilities, the PDF format, it’s subsetting and optimization, locked or embedded PDF settings, or perhaps a little of both. Sometimes when a font is embedded into a PDF it will only contain the glyphs used.Ī) For example, if the PDF document you are trying to extract from does not contain the letter ‘Z’, then that letter will not be present. Not all PDF documents can be read by Fontforge, because PDF documents can have restrictions, formatting peculiarities, embedded font, glyphs as pictures or some other configuration. The following factors need to be considered when using Fontforge to extracts glyphs from a PDF This tutorial is shown on a Windows 10 computer with Fontforge version 03142020. The documents used in this tutorial are Elements of Typographic Style v3 – Extract and FontNaming-kltf. You can download Fontforge for Windows, Mac, or Linux from here. ![]()
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