Umi-OCR

OCR It is a Chrome and Firefox browser extension for extracting text from paginated document viewers, including scanned books, slide decks, PDFs, and embedded readers where text selection is unavailable. Users select a screen region, capture it with a hotkey, and append the locally generated OCR result to an ordered transcript; an automatic mode captures each page, advances the viewer, and stops when text repeats, paging fails, OCR fails, or a page limit is reached. OCR runs offline through a bundled Tesseract build without outbound requests, API calls, or image uploads. The extension crops, optionally enlarges, and converts the visible region to grayscale, queues OCR jobs serially, stores page text and verification thumbnails, flags consecutive duplicate pages, and exports the transcript as copied text or a TXT file with page separators. Page turning can use a picked screen point or keyboard event, including controls inside supported frames and shadow roots. It uses narrowly scoped browser permissions, relying on activeTab for single captures and requesting an additional site grant for automatic runs that persist across page loads or turn pages inside cross-origin iframes.

doc7 is an open-source document-to-Markdown tool that converts PDFs, Office files, scans, screenshots, charts, formulas, and diagrams into AI-ready Markdown using an OpenAI-compatible multimodal vision model. It renders and understands complete pages rather than relying on character extraction, preserving text, tables, formulas, chart and diagram relationships, image meaning, and visible UI state; the video also describes page-level retry and resume. The model can run locally through LM Studio or Ollama or through a remote endpoint, with no required OCR stack or document-processing service. The same binary provides an interactive CLI, batch processing, model checks, MCP support, a Go SDK, and an asynchronous HTTP service, with installers for macOS, Linux, and Windows.

Tesseract OCR is software for performing offline optical character recognition on captured document regions. Its official documentation includes a user manual and source-code documentation.

eSearch is a cross-platform Electron screenshot and screen-search application for Windows, Linux, and macOS. It combines screenshot capture and editing, color picking, drawing, scrolling capture in arbitrary directions, screen recording, pinning images on screen, OCR, translation, reverse image search, QR-code recognition, and screen translation. Its offline eSearch-OCR engine is based on PaddleOCR. Users can select text in a screenshot for recognition, paragraph or vertical-text processing, rotation-aware recognition, later editing and proofreading, and optional additional language models; online OCR services are also supported. OCR output can be sent to translation engines, while reverse image search can use Google, Baidu, or Yandex, and the application can connect to configurable multimodal-model interfaces. Screen translation creates a pinned window that replaces recognized text with translated text and can run on a timer. The application provides configurable shortcuts and tray operation, supports Windows, Linux, and macOS, and is distributed from its website, releases, Arch Linux AUR, and winget. It is released under GPL-3.0.