Data Files

• Special Data Files
• Updated LSTM Data Files for Version 4.00
• Data Files for Version 4.00
• Data Files for Version 3.04/3.05
• Cube Data Files for Version 3.04/3.05
• Fraktur Data Files
• Data Files for Version 3.02
• Data Files for Version 2.0x
• Format of traineddata files

Special Data Files

Lang Code	Description	4.0/3.0x traineddata
osd	Orientation and script detection	osd.traineddata
equ	Math / equation detection	equ.traineddata

Note: These two data files are compatible with older versions of Tesseract. osd is compatible with version 3.01 and up, and equ is compatible with version 3.02 and up.

Updated Data Files for Version 4.00 (September 15, 2017)

We have three sets of .traineddata files on GitHub in three separate repositories. Most users will want tessdata_fast and that is what will be shipped as part of Linux distributions. tessdata_best is for people willing to trade a lot of speed for slightly better accuracy. It is also better for certain retraining scenarios for advanced users. The third set (original 4.00 files from November 2016) is for the legacy recognizer.

Note: When using the new models in the 'tessdata_best' and 'tessdata_fast' repositories, only the new LSTM-based OCR engine is supported. The legacy engine is not supported with these files, so Tesseract's oem modes '0' and '2' won't work with them.

https://github.com/tesseract-ocr/tessdata_best https://github.com/tesseract-ocr/tessdata_fast

Data Files for Version 4.00 (November 29, 2016)

This set of traineddata files has support for the legacy recognizer, with --oem 0.

Note: The kur data file was not updated from 3.04. For Fraktur, see the section Fraktur Data Files, or use the new Fraktur.traineddata.

Lang Code	Language	4.0 traineddata
afr	Afrikaans	afr.traineddata
amh	Amharic	amh.traineddata
ara	Arabic	ara.traineddata
asm	Assamese	asm.traineddata
aze	Azerbaijani	aze.traineddata
aze_cyrl	Azerbaijani - Cyrillic	aze_cyrl.traineddata
bel	Belarusian	bel.traineddata
ben	Bengali	ben.traineddata
bod	Tibetan	bod.traineddata
bos	Bosnian	bos.traineddata
bul	Bulgarian	bul.traineddata
cat	Catalan; Valencian	cat.traineddata
ceb	Cebuano	ceb.traineddata
ces	Czech	ces.traineddata
chi_sim	Chinese - Simplified	chi_sim.traineddata
chi_tra	Chinese - Traditional	chi_tra.traineddata
chr	Cherokee	chr.traineddata
cym	Welsh	cym.traineddata
dan	Danish	dan.traineddata
deu	German	deu.traineddata
dzo	Dzongkha	dzo.traineddata
ell	Greek, Modern (1453-)	ell.traineddata
eng	English	eng.traineddata
enm	English, Middle (1100-1500)	enm.traineddata
epo	Esperanto	epo.traineddata
est	Estonian	est.traineddata
eus	Basque	eus.traineddata
fas	Persian	fas.traineddata
fin	Finnish	fin.traineddata
fra	French	fra.traineddata
frk	Frankish	frk.traineddata
frm	French, Middle (ca. 1400-1600)	frm.traineddata
gle	Irish	gle.traineddata
glg	Galician	glg.traineddata
grc	Greek, Ancient (-1453)	grc.traineddata
guj	Gujarati	guj.traineddata
hat	Haitian; Haitian Creole	hat.traineddata
heb	Hebrew	heb.traineddata
hin	Hindi	hin.traineddata
hrv	Croatian	hrv.traineddata
hun	Hungarian	hun.traineddata
iku	Inuktitut	iku.traineddata
ind	Indonesian	ind.traineddata
isl	Icelandic	isl.traineddata
ita	Italian	ita.traineddata
ita_old	Italian - Old	ita_old.traineddata
jav	Javanese	jav.traineddata
jpn	Japanese	jpn.traineddata
kan	Kannada	kan.traineddata
kat	Georgian	kat.traineddata
kat_old	Georgian - Old	kat_old.traineddata
kaz	Kazakh	kaz.traineddata
khm	Central Khmer	khm.traineddata
kir	Kirghiz; Kyrgyz	kir.traineddata
kor	Korean	kor.traineddata
kur	Kurdish	kur.traineddata
lao	Lao	lao.traineddata
lat	Latin	lat.traineddata
lav	Latvian	lav.traineddata
lit	Lithuanian	lit.traineddata
mal	Malayalam	mal.traineddata
mar	Marathi	mar.traineddata
mkd	Macedonian	mkd.traineddata
mlt	Maltese	mlt.traineddata
msa	Malay	msa.traineddata
mya	Burmese	mya.traineddata
nep	Nepali	nep.traineddata
nld	Dutch; Flemish	nld.traineddata
nor	Norwegian	nor.traineddata
ori	Oriya	ori.traineddata
pan	Panjabi; Punjabi	pan.traineddata
pol	Polish	pol.traineddata
por	Portuguese	por.traineddata
pus	Pushto; Pashto	pus.traineddata
ron	Romanian; Moldavian; Moldovan	ron.traineddata
rus	Russian	rus.traineddata
san	Sanskrit	san.traineddata
sin	Sinhala; Sinhalese	sin.traineddata
slk	Slovak	slk.traineddata
slv	Slovenian	slv.traineddata
spa	Spanish; Castilian	spa.traineddata
spa_old	Spanish; Castilian - Old	spa_old.traineddata
sqi	Albanian	sqi.traineddata
srp	Serbian	srp.traineddata
srp_latn	Serbian - Latin	srp_latn.traineddata
swa	Swahili	swa.traineddata
swe	Swedish	swe.traineddata
syr	Syriac	syr.traineddata
tam	Tamil	tam.traineddata
tel	Telugu	tel.traineddata
tgk	Tajik	tgk.traineddata
tgl	Tagalog	tgl.traineddata
tha	Thai	tha.traineddata
tir	Tigrinya	tir.traineddata
tur	Turkish	tur.traineddata
uig	Uighur; Uyghur	uig.traineddata
ukr	Ukrainian	ukr.traineddata
urd	Urdu	urd.traineddata
uzb	Uzbek	uzb.traineddata
uzb_cyrl	Uzbek - Cyrillic	uzb_cyrl.traineddata
vie	Vietnamese	vie.traineddata
yid	Yiddish	yid.traineddata

Data Files for Version 3.04/3.05

Note: For Arabic and Hindi you need both the traineddata file and the cube data files.

Lang Code	Language	3.04 traineddata
afr	Afrikaans	afr.traineddata
amh	Amharic	amh.traineddata
ara	Arabic	ara.traineddata
asm	Assamese	asm.traineddata
aze	Azerbaijani	aze.traineddata
aze_cyrl	Azerbaijani - Cyrillic	aze_cyrl.traineddata
bel	Belarusian	bel.traineddata
ben	Bengali	ben.traineddata
bod	Tibetan	bod.traineddata
bos	Bosnian	bos.traineddata
bul	Bulgarian	bul.traineddata
cat	Catalan; Valencian	cat.traineddata
ceb	Cebuano	ceb.traineddata
ces	Czech	ces.traineddata
chi_sim	Chinese - Simplified	chi_sim.traineddata
chi_tra	Chinese - Traditional	chi_tra.traineddata
chr	Cherokee	chr.traineddata
cym	Welsh	cym.traineddata
dan	Danish	dan.traineddata
deu	German	deu.traineddata
dzo	Dzongkha	dzo.traineddata
ell	Greek, Modern (1453-)	ell.traineddata
eng	English	eng.traineddata
enm	English, Middle (1100-1500)	enm.traineddata
epo	Esperanto	epo.traineddata
est	Estonian	est.traineddata
eus	Basque	eus.traineddata
fas	Persian	fas.traineddata
fin	Finnish	fin.traineddata
fra	French	fra.traineddata
frk	Frankish	frk.traineddata
frm	French, Middle (ca. 1400-1600)	frm.traineddata
gle	Irish	gle.traineddata
glg	Galician	glg.traineddata
grc	Greek, Ancient (-1453)	grc.traineddata
guj	Gujarati	guj.traineddata
hat	Haitian; Haitian Creole	hat.traineddata
heb	Hebrew	heb.traineddata
hin	Hindi	hin.traineddata
hrv	Croatian	hrv.traineddata
hun	Hungarian	hun.traineddata
iku	Inuktitut	iku.traineddata
ind	Indonesian	ind.traineddata
isl	Icelandic	isl.traineddata
ita	Italian	ita.traineddata
ita_old	Italian - Old	ita_old.traineddata
jav	Javanese	jav.traineddata
jpn	Japanese	jpn.traineddata
kan	Kannada	kan.traineddata
kat	Georgian	kat.traineddata
kat_old	Georgian - Old	kat_old.traineddata
kaz	Kazakh	kaz.traineddata
khm	Central Khmer	khm.traineddata
kir	Kirghiz; Kyrgyz	kir.traineddata
kor	Korean	kor.traineddata
kur	Kurdish	kur.traineddata
lao	Lao	lao.traineddata
lat	Latin	lat.traineddata
lav	Latvian	lav.traineddata
lit	Lithuanian	lit.traineddata
mal	Malayalam	mal.traineddata
mar	Marathi	mar.traineddata
mkd	Macedonian	mkd.traineddata
mlt	Maltese	mlt.traineddata
msa	Malay	msa.traineddata
mya	Burmese	mya.traineddata
nep	Nepali	nep.traineddata
nld	Dutch; Flemish	nld.traineddata
nor	Norwegian	nor.traineddata
ori	Oriya	ori.traineddata
pan	Panjabi; Punjabi	pan.traineddata
pol	Polish	pol.traineddata
por	Portuguese	por.traineddata
pus	Pushto; Pashto	pus.traineddata
ron	Romanian; Moldavian; Moldovan	ron.traineddata
rus	Russian	rus.traineddata
san	Sanskrit	san.traineddata
sin	Sinhala; Sinhalese	sin.traineddata
slk	Slovak	slk.traineddata
slv	Slovenian	slv.traineddata
spa	Spanish; Castilian	spa.traineddata
spa_old	Spanish; Castilian - Old	spa_old.traineddata
sqi	Albanian	sqi.traineddata
srp	Serbian	srp.traineddata
srp_latn	Serbian - Latin	srp_latn.traineddata
swa	Swahili	swa.traineddata
swe	Swedish	swe.traineddata
syr	Syriac	syr.traineddata
tam	Tamil	tam.traineddata
tel	Telugu	tel.traineddata
tgk	Tajik	tgk.traineddata
tgl	Tagalog	tgl.traineddata
tha	Thai	tha.traineddata
tir	Tigrinya	tir.traineddata
tur	Turkish	tur.traineddata
uig	Uighur; Uyghur	uig.traineddata
ukr	Ukrainian	ukr.traineddata
urd	Urdu	urd.traineddata
uzb	Uzbek	uzb.traineddata
uzb_cyrl	Uzbek - Cyrillic	uzb_cyrl.traineddata
vie	Vietnamese	vie.traineddata
yid	Yiddish	yid.traineddata

Cube Data Files for Version 3.04/3.05

In Tesseract 3.0x Arabic and Hindi use the Cube OCR engine. You need to download the cube files and move them to the same folder where the <ara/hin>.traineddata file is located.

In Tesseract 4.0 the Cube OCR engine was removed from the codebase, so if you are using 4.0 or a newer version these files are not needed.

Hindi:
hin.cube.bigrams, hin.cube.fold, hin.cube.lm, hin.cube.nn, hin.cube.params, hin.cube.word-freq, hin.tesseract_cube.nn

Arabic:
ara.cube.bigrams, ara.cube.fold, ara.cube.lm, ara.cube.nn, ara.cube.params, ara.cube.word-freq, ara.cube.size, ara.tesseract_cube.nn

Fraktur Data Files

These data files were prepared by @paalberti for some old versions of Tesseract. dan_frak, deu_frak and swe_frak were prepared for version 3.00, slk_frak was prepared for 3.01. Updates to these files are available at paalberti/tesseract-dan-fraktur.

Lang Code	Language	3.0x traineddata
dan_frak	Danish - Fraktur	dan_frak.traineddata
deu_frak	German - Fraktur	deu_frak.traineddata
slk_frak	Slovak - Fraktur	slk_frak.traineddata
swe_frak	Swedish - Fraktur	swe-frak.traineddata

Data Files for Version 3.02

Lang Code	Language	3.02 traineddata
afr	Afrikaans	tesseract-ocr-3.02.afr.tar.gz
ara	Arabic	tesseract-ocr-3.02.ara.tar.gz
aze	Azerbaijani	tesseract-ocr-3.02.aze.tar.gz
bel	Belarusian	tesseract-ocr-3.02.bel.tar.gz
ben	Bengali	tesseract-ocr-3.02.ben.tar.gz
bul	Bulgarian	tesseract-ocr-3.02.bul.tar.gz
cat	Catalan; Valencian	tesseract-ocr-3.02.cat.tar.gz
ces	Czech	tesseract-ocr-3.02.ces.tar.gz
chi_sim	Chinese - Simplified	tesseract-ocr-3.02.chi_sim.tar.gz
chi_tra	Chinese - Traditional	tesseract-ocr-3.02.chi_tra.tar.gz
chr	Cherokee	tesseract-ocr-3.02.chr.tar.gz
dan	Danish	tesseract-ocr-3.02.dan.tar.gz
deu	German	tesseract-ocr-3.02.deu.tar.gz
ell	Greek, Modern (1453-)	tesseract-ocr-3.02.ell.tar.gz
eng	English	tesseract-ocr-3.02.eng.tar.gz
enm	English, Middle (1100-1500)	tesseract-ocr-3.02.enm.tar.gz
epo	Esperanto	tesseract-ocr-3.02.epo.tar.gz
est	Estonian	tesseract-ocr-3.02.est.tar.gz
eus	Basque	tesseract-ocr-3.02.eus.tar.gz
fin	Finnish	tesseract-ocr-3.02.fin.tar.gz
fra	French	tesseract-ocr-3.02.fra.tar.gz
frk	Frankish	tesseract-ocr-3.02.frk.tar.gz
frm	French, Middle (ca. 1400-1600)	tesseract-ocr-3.02.frm.tar.gz
glg	Galician	tesseract-ocr-3.02.glg.tar.gz
grc	Greek, Ancient (-1453)	tesseract-ocr-3.02.grc.tar.gz
heb	Hebrew	tesseract-ocr-3.02.heb.tar.gz
hin	Hindi	tesseract-ocr-3.02.hin.tar.gz
hrv	Croatian	tesseract-ocr-3.02.hrv.tar.gz
hun	Hungarian	tesseract-ocr-3.02.hun.tar.gz
ind	Indonesian	tesseract-ocr-3.02.ind.tar.gz
isl	Icelandic	tesseract-ocr-3.02.isl.tar.gz
ita	Italian	tesseract-ocr-3.02.ita.tar.gz
ita_old	Italian - Old	tesseract-ocr-3.02.ita_old.tar.gz
jpn	Japanese	tesseract-ocr-3.02.jpn.tar.gz
kan	Kannada	tesseract-ocr-3.02.kan.tar.gz
kor	Korean	tesseract-ocr-3.02.kor.tar.gz
lav	Latvian	tesseract-ocr-3.02.lav.tar.gz
lit	Lithuanian	tesseract-ocr-3.02.lit.tar.gz
mal	Malayalam	tesseract-ocr-3.02.mal.tar.gz
mkd	Macedonian	tesseract-ocr-3.02.mkd.tar.gz
mlt	Maltese	tesseract-ocr-3.02.mlt.tar.gz
msa	Malay	tesseract-ocr-3.02.msa.tar.gz
nld	Dutch; Flemish	tesseract-ocr-3.02.nld.tar.gz
nor	Norwegian	tesseract-ocr-3.02.nor.tar.gz
pol	Polish	tesseract-ocr-3.02.pol.tar.gz
por	Portuguese	tesseract-ocr-3.02.por.tar.gz
ron	Romanian; Moldavian; Moldovan	tesseract-ocr-3.02.ron.tar.gz
rus	Russian	tesseract-ocr-3.02.rus.tar.gz
slk	Slovak	tesseract-ocr-3.02.slk.tar.gz
slv	Slovenian	tesseract-ocr-3.02.slv.tar.gz
spa	Spanish; Castilian	tesseract-ocr-3.02.spa.tar.gz
spa_old	Spanish; Castilian - Old	tesseract-ocr-3.02.spa_old.tar.gz
sqi	Albanian	tesseract-ocr-3.02.sqi.tar.gz
srp	Serbian	tesseract-ocr-3.02.srp.tar.gz
swa	Swahili	tesseract-ocr-3.02.swa.tar.gz
swe	Swedish	tesseract-ocr-3.02.swe.tar.gz
tam	Tamil	tesseract-ocr-3.02.tam.tar.gz
tel	Telugu	tesseract-ocr-3.02.tel.tar.gz
tgl	Tagalog	tesseract-ocr-3.02.tgl.tar.gz
tha	Thai	tesseract-ocr-3.02.tha.tar.gz
tur	Turkish	tesseract-ocr-3.02.tur.tar.gz
ukr	Ukrainian	tesseract-ocr-3.02.ukr.tar.gz
vie	Vietnamese	tesseract-ocr-3.02.vie.tar.gz

Data Files for Version 2.0x

Lang Code	Language	2.0x traineddata
deu	German	tesseract-2.00.deu.tar.gz
deu-f	German - Fraktur	tesseract-2.01.deu-f.tar.gz
eng	English	tesseract-2.00.eng.tar.gz
eus	Basque	tesseract-2.04-eus.tar.gz
fra	French	tesseract-2.00.fra.tar.gz
ita	Italian	tesseract-2.00.ita.tar.gz
nld	Dutch; Flemish	tesseract-2.00.nld.tar.gz
por	Portuguese	tesseract-2.01.por.tar.gz
spa	Spanish; Castilian	tesseract-2.00.spa.tar.gz
vie	Vietnamese	tesseract-2.01.vie.tar.gz

Format of traineddata files

The traineddata file for each language is an archive file in a Tesseract specific format. It contains several uncompressed component files which are needed by the Tesseract OCR process. The program combine_tessdata is used to create a tessdata file from the component files and can also extract them again like in this example:

combine_tessdata -u test/tessdata/eng.traineddata eng.
Extracting tessdata components from test/tessdata/eng.traineddata
Wrote eng.unicharset
Wrote eng.unicharambigs
Wrote eng.inttemp
Wrote eng.pffmtable
Wrote eng.normproto
Wrote eng.punc-dawg
Wrote eng.word-dawg
Wrote eng.number-dawg
Wrote eng.freq-dawg
Wrote eng.cube-unicharset
Wrote eng.cube-word-dawg
Wrote eng.shapetable
Wrote eng.bigram-dawg
Wrote eng.lstm
Wrote eng.lstm-punc-dawg
Wrote eng.lstm-word-dawg
Wrote eng.lstm-number-dawg

There are some proposals to replace the Tesseract archive format by a standard archive format which could also support compression. A discussion on the tesseract-dev forum proposed the ZIP format already in 2014. In 2017 an experimental implementation was provided as a pull request.