Skip to content
Java font converter library.
Branch: master
Clone or download
Latest commit e7320e5 Oct 11, 2018
Type Name Latest commit message Commit time
Failed to load latest commit information.
.travis.yml Update Oct 5, 2016
pom.xml bump version number Oct 11, 2018


Build Status

Java library for converting and manipulating various font formats, normalizing invalid fonts and extracting fonts from PDFs.

Currently supports

  • Bare CFF -> OpenType/OTF and WOFF 1.0 & 2.0

  • OpenType/OTF/TTF -> WOFF 1.0 & 2.0

  • WOFF 1.0 -> OpenType and WOFF 2.0

  • EOT (uncompressed v2 only) -> OpenType

With PdfFontExctractor utility

  • Supports extracting PostScript Type0/Compsoite, Bare CFF and TTF fonts.
  • PdfFontExtractor will normalize TTF fonts to make sure they are valid in all major web browsers.
Can only convert these types with PdfFontExtractor utility
  • PostScript Type0/Composite -> OpenType/TTF and WOFF 1 & 2

Maven (On Maven Central)


Optional jBrotli dependency for WOFF2 support. jBrotli is currently optional since it is not on Maven Central or JCenter yet.




Converting a font (in this case to OTF)
FVFont font = FontVerter.convertFont(inputFontFile, FontVerter.FontFormat.OTF);
FileUtils.writeByteArrayToFile(new File("MyFont.otf"), font.getData());
Reading a font file
File file = new File("FontVerter+SimpleTestFont.otf");
FVFont font = FontVerter.readFont(file);
Attempt to normalize and fix an invalid font
File file = new File("FontVerter+SimpleTestFont.otf");
FVFont font = FontVerter.readFont(file);

if (!font.isValid())

FileUtils.writeByteArrayToFile(new File("fixed-font.otf"), font.getData());
PDF Font Extractor command line
PdfFontExtractor <PDF file or directory containing PDF files>

-ff=<format> Font format to save the fonts as. <format> = WOFF1, WOFF2, OTF. Defaults to OTF.
-dir=<path> Directory to extract to. <path> = font extract directory. Defaults to {current dir}/fonts/
PDF font extractor programatically
File pdf = new File("test.pdf");
PdfFontExtractor extractor = new PdfFontExtractor();

// extract directly to a directory
extractor.extractFontsToDir(pdf, TestUtils.tempOutputPath);

// or extract to list of FVFonts for further manipulation
List<FVFont> fonts = extractor.extractToFVFonts(doc);
You can’t perform that action at this time.