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| Font Validator is a tool for testing fonts prior to release. | |
| It was initially developed by Microsoft, to ensure that fonts meet Microsoft's | |
| high quality standards and perform exceptionally well on Microsoft's | |
| platform. | |
| In 2015 the source code was published under the MIT license ([see release | |
| discussion](http://typedrawers.com/discussion/1222/microsoft-font-validato | |
| r-lives)) | |
| Most (only?) active development happens at | |
| http://github.com/HinTak/Font-Validator . | |
| FontVal 2.1.1 , Sep 1 2017 | |
| ============= | |
| - This is an update from FontVal 2.1 on the FreeType backend only, | |
| to VER-2-8-100-g587264cfd . | |
| We now also offer all-in-one command-line binaries for Ubuntu Linux x86_64 | |
| 14.04 and 16.04, in addition to Mac OS X. ( Thanks to new functionality | |
| in mono introduced in 4.6.0 and matured in 4.8.0 in the last 12 months. ) | |
| The Ubuntu 16.04 binary is preferred, as the 14.04 binary is limited | |
| by older compiler as mentioned in FontVal 2.1. | |
| - as rasterization tests now work on all major platforms, "+raster-tests" | |
| will become the default in FontVal 2.2 . | |
| - The windows-only "accept non-ascii font names" fix proved to be troublesome | |
| and is reverted. Other platforms are not affected and continue to accept | |
| non-ascii font file names. | |
| Special thanks to Christian Demmer for multiple rounds of patient testing | |
| of the Mac OS X binaries! | |
| FontVal 2.1 , Jul 20 2017 | |
| =========== | |
| - Backend b70+10.5, based on FreeType 2.8+ (VER-2-8-73-g38bdf22bf) | |
| - 16 Errors/Warnings in 1.0 which has no FreeType equivalent | |
| are implemented. This includes incomplete conditionals (e.g. | |
| IF without THEN) and maths overflows, etc. | |
| - 15 FreeType-specific additions are added. This includes endless loops | |
| and backward jumps, etc. | |
| - C Python wrapper available ( https://github.com/HinTak/freetype-py | |
| fontval-diag branch ). Perl wrapper in dev. | |
| - Robustness: still produce a report for some seriously buggy fonts | |
| - Speed/Resources improvements: | |
| - avoid unnecessary repeated processing of identical EBDT/glyf tables | |
| and rasterization for TTCs | |
| (down from half-days to an hour or two in some cases) | |
| - much smaller memory foot-prints for EBDT check | |
| (down from 15 to 20+ GB RAM to 1 or 2 GB in some extreme cases) | |
| - Windows-only problem fixed: can now accept non-ascii font names | |
| (2.0 did not, 1.0 did). | |
| - New opentype tables supported: meta (partial) | |
| - glyf table: cope with broken contours with hair pins, and extremely | |
| tight loops etc and correctly warn those. | |
| - DSIG table: supports stronger cryptographic digest algorithms (Apparently | |
| Adobe started signing with those). correct previous mis-diagnosis of very | |
| old TTCs' signature. | |
| - A lot of misc documentation updates. | |
| - Known Caveats: | |
| - E6053 (Value exceeds capacity of 2 byte number) also warns on | |
| values exceeding Fixed 2.14 (FontVal 1.0 did not). | |
| - W6028 (number of twilight points unreasonably large) too frequent/noisy. | |
| - W6029 (Setting the loop variable to zero is an error) may be withdrawn | |
| later as ttfauthint does it and there is no known problem, despite | |
| some apple and macrosoft docs saying so. | |
| - The check for maths overflows in hinting instructions requires gcc 5+ to | |
| build, so it is not offered on the Mac OS X backend for the time being. | |
| FontVal 2.0 , Jul 17 2016 | |
| =========== | |
| - backend b54, based on FreeType 2.6.4 | |
| FontVal 1.1 , Apr 07 2009 | |
| =========== | |
| - Microsoft released to Github on Nov 11 2015; incomplete | |
| FontVal 1.0 , Jul 10 2003 | |
| =========== | |
| - last known Microsoft's proprietary binary |