#4589·tesseract

Training unicharset_extractor broken in 5.5.3

Author: nguyenqCreated Jul 29, 2026Updated Jul 29, 2026

Current Behavior

The Training Windows program unicharset_extractor of Tesseract 5.5.3 release has failed silently, not producing unicharset output file as expected. I installed from the link below:

https://github.com/tesseract-ocr/tesseract/releases/download/5.5.3/tesseract-ocr-w64-setup-5.5.3.20260724.exe

Expected Behavior

Should produce unicharset output file

Suggested Fix

No response

tesseract -v

tesseract v5.5.3.20260724 leptonica-1.87.0 libgif 5.2.2 : libjpeg 8d (libjpeg-turbo 3.1.3) : libpng 1.6.58 : libtiff 4.7.2 : zlib 1.3.1 : libwebp 1.6.0 : libopenjp2 2.5.4 Found AVX2 Found AVX Found FMA Found SSE4.1 Found libarchive 3.8.8 zlib/1.3.2 liblzma/5.8.3 bz2lib/1.0.8 liblz4/1.10.0 libzstd/1.5.7 expat/expat_2.8.2 cng/1.0 libb2/system Found libcurl/8.21.0 Schannel zlib/1.3.2 brotli/1.2.0 zstd/1.5.7 libidn2/2.3.8 libpsl/0.21.5 libssh2/1.11.1 WinLDAP

Operating System

Windows 11

Other Operating System

No response

uname -a

No response

Compiler

No response

CPU

Intel i9 14900HX

Virtualization / Containers

No response

Other Information

No response