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| OTS-SIDE-BY-SIDE(1) | User Commands | OTS-SIDE-BY-SIDE(1) |
NAME
ots-side-by-side - font quality checkerSYNOPSIS
ots-side-by-side FONT_FILEDESCRIPTION
ots-side-by-side is a program which renders some characters (ASCII, Latin-1, CJK) using both original font and transcoded font and checks that the two rendering results are exactly equal.The following Unicode characters are used during the test:
0x0020 - 0x007E // Basic Latin 0x00A1 - 0x017F // Latin-1 0x1100 - 0x11FF // Hangul 0x3040 - 0x309F // Japanese HIRAGANA letters 0x3130 - 0x318F // Hangul 0x4E00 - 0x4F00 // CJK Kanji/Hanja 0xAC00 - 0xAD00 // Hangul
This tool uses FreeType library.
Note: This tool doesn’t check kerning (GPOS/kern) nor font substitution (GSUB). These should be tested in Layout tests if necessary.
EXAMPLES
$ ./ots-side-by-side linux/kochi-gothic.ttf # no problem $ ./ots-side-by-side free/kredit1.ttf # this is known issue of OTS. bitmap metrics doesn't match! (14, 57), (37, 45) EXPECTED: +#######*. +##########+ *#* # #* ##. # ## ## # ## ## # ## ## #. ## ##. #. .## ##. #. .## *#+ *+ +#* *#+ *+ +#* *#+ *+ +#* *#+ *+ +#* *#+ *+ *#* *#+ ++ *#+ +#* +* *#+ +#* +* *#+ +#* +* *#+ +#* +* ##. +#* +* ##. ## # ## ## # ## ## # .## ## # .## ## .#+ +#* ## +######* ##.+#######* *##########* +##########+ #########* .######## +####+ .*######* +##*.*##### *#* ## #+ ##*### ## ###### ## ##+.##+ +## ## ########## ## +######### ## +######## *#. .########* +##########+ +*######* ACTUAL: .*##*+ +##+.##*. *# ### *#+ #*######+ .*#+ #########*. +#*. ###########* +#* *############+ *#+ +##############. .##. *##############* +#* +###############+ *#+ *###############+ .*#+ .###############*. +#*. +###############* +#* *###############+ *#+ .*###############+ .*#+ +###############*. +#* +###############* ** *###############+ #+ .###############* ## +############+ ## +########* .## .######. +### +#####+ .*#..# +#####* *###..# *#####. +#######* +#####+ .*########. +#####* +#########* *#####. +##########+ +#####+ *#########*. .#####* +##########+ *#####. +##########* +#####+ *#########*. .#####* +##########+ *#####+ +##########* .#*++#+ *#########*. ****###+.##########* ##################. ###+ *#########+ ## +########* *#+ *########. ##.#######+ +#######* *###*. Glyph mismatch! (file: free/kredit1.ttf, U+0021, 100pt)!
REPORTING BUGS
Report bugs to <https://github.com/khaledhosny/ots/issues>SEE ALSO
ots-idempotent(1), ots-perf(1), ots-sanitize(1), ots-validator-checker(1)| May 2021 | OpenType Sanitizer |
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