gImageReader vs Tesseract OCR
gImageReader
github.comTesseract OCR
github.comSide by side
| Figure | gImageReader | Tesseract OCR |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| Android | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · OCR software | 7.8 (#29) | 9.1 (#2) |
| Free plan | Yes | Yes |
| Supported inputs | both | image |
| Language data | Tesseract language definitions can be selected through the integrated tessdata manager or installed manually. | The engine and language traineddata are separate installation components, and the documentation lists packages for over 130 languages and over 35 scripts. |
| License | The repository identifies its license as GPL-3.0. | The code is licensed under Apache License 2.0 and is provided without warranties under the license terms. |
| Output formats | It recognizes text to plain text or hOCR documents and can generate PDFs from hOCR documents. | Supported output formats include plain text, hOCR, PDF, invisible-text-only PDF, TSV, ALTO, and PAGE. |
| Primary platform | desktop | desktop |
| Purpose | gImageReader is a Gtk/Qt front-end to tesseract-ocr. | Tesseract is an OCR engine and command-line program for extracting printed text from images. |
| Searchable PDF | Yes | Yes |
| Support | The project directs users to its issue tracker, maintainer email, and FAQ for help. | The README directs users to documentation, FAQs, user and developer forums, past issues, and mailing lists, and says issues should be used for bug reports rather than questions. |
Plans
In their own words
gImageReader
gImageReader has no write-up on Specifiction yet; its figures are above.
Tesseract OCR
Tesseract OCR is a free, open-source OCR engine and command-line program for extracting printed text from images. It accepts image inputs including PNG, JPEG, and TIFF, and can output plain text, hOCR, PDF, TSV, ALTO, and PAGE formats. PDF options include searchable PDFs and invisible-text-only PDFs. Tesseract 4 and later include an LSTM-based engine focused on line recognition, while Legacy OCR Engine mode retains compatibility with Tesseract 3. The project says it recognizes more than 100 languages out of the box; language data is installed separately from the engine. Developers can build applications with the C or C++ libtesseract API, and the documentation lists wrappers for other languages. The repository code uses the Apache License 2.0. Tesseract does not include a graphical user interface and points users to third-party interfaces. It uses Leptonica to open images, and improving input image quality may be needed for better recognition results. Installation instructions cover Linux, macOS, and Windows, with listed platforms also including Android and self-hosting.