Offline Batch OCR
Process hundreds of images at once with no internet connection. Export results to TXT, Markdown, CSV, or JSONL.
Free Download
Download Umi-OCR
Free, open source offline OCR software for Windows — no internet connection required.
Umi-OCR v2.1.5 Latest Stable
Windows 7 x64 and above · No installation required · Unzip and run
Contains RapidOCR engine — best compatibility across all Windows versions
SourceForge Mirror
Alternative download for slower GitHub connections
View on GitHub
Source code, issues, and changelog
System Requirements
Operating System
Windows 7 x64 or later
(Windows 10/11 recommended)
Architecture
64-bit (x64) only
Installation
None — unzip and run
No admin rights needed
Desktop Features
Everything in the Offline OCR Desktop App
Umi-OCR desktop software goes beyond browser-based tools with powerful offline processing, batch workflows, and developer integrations.
Screenshot Recognition
Use a global hotkey to capture any region of your screen and instantly extract text — ideal for subtitles, menus, or pop-ups.
PDF Text Extraction
Extract text from scanned PDF documents with high accuracy. Perfect for digitizing books, papers, and official documents.
HTTP API Support
Integrate Umi-OCR into your own applications via a built-in HTTP API. Automate OCR tasks from scripts or other software.
Multi-Language OCR
Supports Simplified Chinese, Traditional Chinese, English, Japanese, Korean, and more — with exceptional Chinese text accuracy.
Free & Open Source
Completely free to use, MIT licensed, with full source code available on GitHub. No subscriptions, no ads, no telemetry.
Web vs Desktop
Which version is right for you?
| Feature | Umiocr (Web — free online) | Umi-OCR (Desktop — Windows) |
|---|---|---|
| No download or install | ✅ | ❌ (unzip required) |
| Works in browser | ✅ | ❌ |
| Works offline | ⚠️ Requires internet | ✅ Fully offline |
| Batch OCR (multiple images) | Limited | ✅ Unlimited |
| Screenshot hotkey | ❌ | ✅ |
| HTTP API integration | ❌ | ✅ |
| PDF OCR | ✅ | ✅ |
| Multi-language support | ✅ | ✅ |
| Cost | Free | Free |
FAQ
Umi-OCR Download FAQ
Answers to common questions about downloading and using the Umi-OCR desktop application for Windows.
How do I install Umi-OCR on Windows?
Umi-OCR does not require installation. Download the .7z archive from GitHub Releases, extract it to any folder using 7-Zip or WinRAR, and double-click Umi-OCR.exe to launch the application immediately.
What is the difference between Umiocr and Umi-OCR?
Umiocr (umiocr.com) is the free online web version — no download needed, works in any browser. Umi-OCR is the desktop application for Windows that runs completely offline, supports batch processing, screenshot hotkeys, and HTTP API integration. Both use the same powerful OCR engine.
Does Umi-OCR work without an internet connection?
Yes. Umi-OCR is a fully offline application. All OCR processing happens locally on your computer using bundled recognition models. No internet connection is required after downloading.
What Windows versions does Umi-OCR support?
Umi-OCR supports Windows 7 x64 and all later versions including Windows 10 and Windows 11. A 64-bit operating system is required.
Is Umi-OCR free and open source?
Yes. Umi-OCR is completely free and open source, licensed under the MIT License. The full source code is available on GitHub at github.com/hiroi-sora/Umi-OCR.
Can I use Umi-OCR for batch processing?
Yes. The desktop app includes a powerful Batch OCR mode that lets you process hundreds of images at once. Results can be exported to TXT, JSONL, Markdown, or CSV/Excel formats.
No Download Needed
Want to try OCR right now in your browser?
Use the free Umiocr online OCR tool instantly — no download, no login, works on any device.
Try Free Online OCR Tool →Umi-OCR is an open source project created by hiroi-sora on GitHub, licensed under the MIT License. Umiocr.com is an independent web portal and is not an official product of the Umi-OCR project. All embedded OCR components are subject to their respective open source licenses.