OCR - Image Reader

OCR - Image Reader

A powerful optical character recognition (OCR) extension to capture and convert images to text

OCR - Image Reader promo image
What is OCR - Image Reader?

OCR - Image Reader is a digital tool extension for Firefox that captures a selected region in the active window, recognizes the text using its in-built OCR engine, and converts it into editable format. Designed for resource-efficiency, it loads the JS library on the page during use and removes it afterwards. It supports more than 100 languages, automatic text orientation, and script detection. The OCR process is performed offline, thus ensuring privacy and data security.

Stats date:
By: Brian
Rating: 3.91 (22)
Version: 0.3.9 (Last updated: 2023-11-25)
Creation date: 2021-05-25
Weekly download count: 325
Firefox on Android: No
Manifest version: 2
  • storage
  • unlimitedStorage
  • activeTab
  • notifications
  • https://tessdata.projectnaptha.com/*.gz
  • https://github.com/naptha/tessdata/blob/gh-pages/*.gz?raw=true
  • <all_urls>
Size: 2.65M
URLs: Website
Risk impact: Moderate risk impact
Risk likelihood: Moderate risk likelihood

Other platforms

OCR - Image Reader
OCR - Image Reader (v0.3.8)
3.84 (152) 185,387
Not available on Edge

Usage Preview: https://www.youtube.com/watch?v=XnpgZPnn9bk https://www.youtube.com/watch?v=yGclbl03Uuk

This extension adds a toolbar button to your browser which when clicks allows the user to select a region in the currently active window. The extension captures the area and tries to recognize text inside this region using the internal powerful OCR engine. This extension uses the "tesseract.js" library that supports more than 100 languages, automatic text orientation, and script detection.

This extension loads the JS library on the page and removes it when you are done with the OCR. This way there is no long-term resource usage.

Note: On the first run, the extension might take a few minutes to fetch the training data from the internet. Since this resource is cached, all subsequent calls are going to be fast.

Note: Optical character recognition (OCR) is slow, so this extension displays a progress bar for each detection module.

Note: This extension does the OCR process offline. There is no server-side interaction. It only fetches the language training database once.

Note: This tool can be used to extract the text content out of images, PDF documents, Powerpoint slides, or extract the content of a web page when user-section is forbidden.

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works well with languages other than English
  • Does not require signing in, creating an account, or recurring fees
  • Simple and effective
  • Gives error message 'missing host permission for the tab'
  • Not accurate for Chinese translations
  • Doesn't work and gets stuck on 'downloading resources' stage
Most mentioned
  • Ease of use
  • Issues with translation accuracy
  • Performance with different languages
View all user reviews
Risk impact

OCR - Image Reader may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

OCR - Image Reader is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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