Baidu Unlimited-OCR Guide

Baidu released Unlimited-OCR on June 22, 2026, positioning it around one-shot long-horizon document parsing rather than page-by-page OCR.

The public GitHub release describes Unlimited-OCR as a push beyond DeepSeek-OCR toward one-shot long-horizon parsing for longer documents.

The practical question is not model hype. It is whether long PDFs can be parsed with fewer page resets, cleaner layout, and stable throughput.

The live tool uses Tesseract.js for text recognition and PDF.js to render PDF pages in your browser. It does not run Baidu Unlimited-OCR; the model has different deployment and hardware requirements.

Use the browser tool to recover plain text from an image or scanned PDF without retyping. For spreadsheet, Markdown, searchable PDF, and API tasks, this page explains subsequent work that the current tool does not automate.

Use sharp screenshots or high-resolution scans with straight pages and strong contrast. If the result is difficult to read, crop or rotate the source and retry. Recognition can miss text, so keep the original until you have checked the result.

The available actions are copy text and download TXT. No DOCX, XLSX, CSV, JSON, Markdown, or searchable PDF file is generated here. You can manually edit the extracted text in another application; structured output and API requirements can be discussed for a paid pilot, without a delivery promise.

Check names, dates, totals, invoice numbers, tables, handwriting, stamps, watermarks, and low-contrast areas before relying on OCR output. OCR saves typing, but important legal, medical, finance, and identity documents still need a human review pass.

For receipts and invoices, verify merchant, vendor, date, subtotal, tax, total, currency, line items, and payment terms. For contracts, verify names, clause numbers, signatures, dates, and page order. For research and books, verify headings, citations, tables, footnotes, and reading order.

Images and PDFs are processed in this browser. If the local engine cannot load, recognition fails rather than uploading the document to a cloud fallback. Before using a separate document service, check its upload disclosure, retention, deletion, and training policies.

Batch OCR processes selected files sequentially, and PDF OCR extracts text from rendered pages. The searchable PDF, Excel, Markdown, and API pages are workflow guides, not additional output modes of this tool.