tesseract-ocr

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Welcome,

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Please read Frequently Asked Questions
Make sure you read the Tesseract documentation
Search internet sources (including this group) for a solution

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Provide all steps (including input resources) for its replication.
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Stéphane Brunner, Zdenko Podobny4

2:01 PM

Image just some color converted into black and white

Hello, You are using old version of tesseract - please update to current version 5.5.1 Zdenko so 22.

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Image just some color converted into black and white

Hello, You are using old version of tesseract - please update to current version 5.5.1 Zdenko so 22.

2:01 PM

Jozef M., Ger Hobbelt2

Nov 11

Tesseract LSTM competitive word recognition (at least for certain use cases)

Thank you for publishing this. Question: the -1 confidence numbers for T3 and T4 in the charts: could

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Tesseract LSTM competitive word recognition (at least for certain use cases)

Thank you for publishing this. Question: the -1 confidence numbers for T3 and T4 in the charts: could

Nov 11

Mattia Mirri, Ger Hobbelt2

Nov 10

Help with auto island detection

Relevant (if only sideways at first glance): - https://tesseract-ocr.github.io/tessdoc/ImproveQuality

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Help with auto island detection

Relevant (if only sideways at first glance): - https://tesseract-ocr.github.io/tessdoc/ImproveQuality

Nov 10

Jeremy C. Reed, Ger Hobbelt2

Nov 9

training using a page at a time?

In answer to your question: AFAIK there is no 'simple' solution/answer. Reading, OCRing (old)

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training using a page at a time?

In answer to your question: AFAIK there is no 'simple' solution/answer. Reading, OCRing (old)

Nov 9

Harshit Goel, Ger Hobbelt5

Nov 5

tesseract via gosseract returns empty text for one image, but CLI detects correctly ("NO SMOKING")

"tav output modes": typo! I meant to say "TSV output mode". Sorry. Met

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tesseract via gosseract returns empty text for one image, but CLI detects correctly ("NO SMOKING")

"tav output modes": typo! I meant to say "TSV output mode". Sorry. Met

Nov 5

Sandeep G

Nov 3

Issue with Colon Recognition After Fine-Tuning Tesseract 5.5.3 on Russian Dataset

I'm currently working on fine-tuning the Tesseract OCR model (version 5.5.3) and encountered an

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Issue with Colon Recognition After Fine-Tuning Tesseract 5.5.3 on Russian Dataset

I'm currently working on fine-tuning the Tesseract OCR model (version 5.5.3) and encountered an

Nov 3

Michael Schuh, … Ger Hobbelt11

Nov 1

Trouble extracting date and time from image

You're welcome! Good luck and take care! .... (For posterity / google search, here's a

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Trouble extracting date and time from image

You're welcome! Good luck and take care! .... (For posterity / google search, here's a

Nov 1

Coure 2011

Oct 29

Deserialize header failed: 1.lstmf

I need to train the default eng data, so that it can also recognize new characters. I created box

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Deserialize header failed: 1.lstmf

I need to train the default eng data, so that it can also recognize new characters. I created box

Oct 29

Jean-Marc Spaggiari, Zdenko Podobny2

Sep 28

Same command for 2 files

Hi, But for the Aurochs file I'm getting "Empty page!!". I have not been able to get a

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Same command for 2 files

Hi, But for the Aurochs file I'm getting "Empty page!!". I have not been able to get a

Sep 28

pascal 06, Tom Morris4

Sep 18

Carriage return after each word

Bonsoir Tom, je suppose que tu es francophone :) Merci pour ta réponse ! Je vais continuer en anglais

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Carriage return after each word

Bonsoir Tom, je suppose que tu es francophone :) Merci pour ta réponse ! Je vais continuer en anglais

Sep 18

Alessandro Griseta, … Milan Hauth4

Aug 30

[questions] what happened to `tessdata_best` in Tesseract 5?

works for me with tesseract 5.5.1 git clone --depth=1 https://github.com/tesseract-ocr/tessdata_best

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[questions] what happened to `tessdata_best` in Tesseract 5?

works for me with tesseract 5.5.1 git clone --depth=1 https://github.com/tesseract-ocr/tessdata_best

Aug 30

Andrus Moor

Aug 24

How recognize text with background

Tried https://github.com/Sicos1977/TesseractOCR and Leptonica to convert jpg receipt slip to text:

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How recognize text with background

Tried https://github.com/Sicos1977/TesseractOCR and Leptonica to convert jpg receipt slip to text:

Aug 24

Pavel Hanák

Aug 21

Tesseract returns exotic characters while processing standard latin-script document

Short version: Ghostscipt uses Tesseract, but their data exchange interface may contain a bug.

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Tesseract returns exotic characters while processing standard latin-script document

Short version: Ghostscipt uses Tesseract, but their data exchange interface may contain a bug.

Aug 21

Yuwen Hsieh

Aug 15

Can't install 5.5.1

Hello I tried to install Tesseract with docker base image python:3.11-trixie, but it's installing

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Can't install 5.5.1

Hello I tried to install Tesseract with docker base image python:3.11-trixie, but it's installing

Aug 15

Cary Lewis

Aug 14

OCR of iPhone Screen shots

I have been trying with some success to have tesseract recognize text from iPhone's about screen.

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OCR of iPhone Screen shots

I have been trying with some success to have tesseract recognize text from iPhone's about screen.

Aug 14

Thomas McGrew, Zdenko Podobny7

Aug 10

Incorrect text detection

You are correct, I did miss that section. Inverting the image seems to produce better results. I

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Incorrect text detection

You are correct, I did miss that section. Inverting the image seems to produce better results. I

Aug 10

Jan-Erik Lärka, Nikola Smolenski4

Aug 4

TESSDATA_PREFIX doesn't work with national character(s)

The problem is that there are two places attempting to use TESSDATA_PREFIX and they have conflicting

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TESSDATA_PREFIX doesn't work with national character(s)

The problem is that there are two places attempting to use TESSDATA_PREFIX and they have conflicting

Aug 4

Terasgr

Jul 25

Modern Greek depends on Ancient Greek language?

Hello people. When I tried to OCR a Greek text using tesseract I found that the modern Greek data (

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Modern Greek depends on Ancient Greek language?

Hello people. When I tried to OCR a Greek text using tesseract I found that the modern Greek data (

Jul 25

Graham Toal

Jul 20

Re: [tesseract-ocr] How can I find out the version of current Tesseract from cmdline?

'--' not '-' gtoal@linux:~/github/uparse-main$ tesseract Usage: tesseract --help | --

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Re: [tesseract-ocr] How can I find out the version of current Tesseract from cmdline?

'--' not '-' gtoal@linux:~/github/uparse-main$ tesseract Usage: tesseract --help | --

Jul 20

Tom Vercauteren, … Fly Night Society7

Jul 17

Best settings to OCR an image of some cyphered text (base64)

I already have, and yes to all. On Wednesday, July 16, 2025 at 5:33:53 PM UTC-4 tfmo...@gmail.com

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Best settings to OCR an image of some cyphered text (base64)

I already have, and yes to all. On Wednesday, July 16, 2025 at 5:33:53 PM UTC-4 tfmo...@gmail.com

Jul 17

Maxim Kizub

Jul 17

Training lstm with symbol boxes

Hello. I need to OCR text with mix of latin and cyrillic letters plus emoji-like icons. Text font is

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Training lstm with symbol boxes

Hello. I need to OCR text with mix of latin and cyrillic letters plus emoji-like icons. Text font is

Jul 17

nahye koo

Jul 15

Can I train a model for multiple languages at the same time?

Hello! I want to use custom traineddata, but the performance is bad, so I want to ask for advice. I

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Can I train a model for multiple languages at the same time?

Hello! I want to use custom traineddata, but the performance is bad, so I want to ask for advice. I

Jul 15

jollysalmon, Zdenko Podobny3

Jul 6

OCR multiple pngs into one PDF

Sorry about that, looks like it wasn't so clear at al; - anyway, I ended up completing a script,

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OCR multiple pngs into one PDF

Sorry about that, looks like it wasn't so clear at al; - anyway, I ended up completing a script,

Jul 6

Jay S

Jul 1

What build pipeline produces the most performant static binary for windows?

Hi all, Right now I am building a static x64 binary of tesseract 5.5.1 using vcpkg + Visual Studio

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What build pipeline produces the most performant static binary for windows?

Hi all, Right now I am building a static x64 binary of tesseract 5.5.1 using vcpkg + Visual Studio

Jul 1

JoeBlack, Lorenzo Bolzani3

Jun 30

(Py)Tesseract does not detect all expected hex codes in my image despite multiple preprocessing strategies

https://pastebin.com/4J40QcJE Template matching works better than Tesseract, and the code is much

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(Py)Tesseract does not detect all expected hex codes in my image despite multiple preprocessing strategies

https://pastebin.com/4J40QcJE Template matching works better than Tesseract, and the code is much

Jun 30

Michael, tang...@gmail.com2

Jun 29

How to find out the version of current Tessaract installation (on Win)?

Tesseract —version On Sun, 29 Jun 2568 BE at 13:19 Michael <mha...@gmail.com> wrote: Assume I

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How to find out the version of current Tessaract installation (on Win)?

Tesseract —version On Sun, 29 Jun 2568 BE at 13:19 Michael <mha...@gmail.com> wrote: Assume I

Jun 29

Ajinkya Bobade, … jannes hoekman5

Jun 19

Handling text scans and cleaning

You can use BIQE archive Op do 19 jun 2025 om 17:36 schreef Kliai Louay <kliai...@gmail.com>

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Handling text scans and cleaning

You can use BIQE archive Op do 19 jun 2025 om 17:36 schreef Kliai Louay <kliai...@gmail.com>

Jun 19

محمود محمد, … Kalyan Karthik4

Jun 19

organizing a Zoom-based training workshop to discuss and practice advanced applications of Tesseract OCR

Happy to join in this workshop On Sunday, June 15, 2025 at 10:58:08 PM UTC+5:30 mahmoud...@gmail.com

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organizing a Zoom-based training workshop to discuss and practice advanced applications of Tesseract OCR

Happy to join in this workshop On Sunday, June 15, 2025 at 10:58:08 PM UTC+5:30 mahmoud...@gmail.com

Jun 19

הברנש, … Tech Tactics3

Jun 15

help in ocr pdf

Hey Tom, I am working with bengli OCR text extraction using tesseract. How can I train, fine tune

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help in ocr pdf

Hey Tom, I am working with bengli OCR text extraction using tesseract. How can I train, fine tune

Jun 15

gwapes

Jun 14

Inconsistent Tesseract performance

Hello, I am reaching out to get some advice on inconsistent performance running tesseract on

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Inconsistent Tesseract performance

Hello, I am reaching out to get some advice on inconsistent performance running tesseract on

Jun 14