Thorium Reader 3 by EDRLabs
- Reading System Thorium Reader 3
- Vendor EDRLabs
- Assistive Technology: Narrator
- OS: Windows
- Tested with Braille: No
- Tested with Screenreader: Yes
- Input type: Keyboard
Results for Basic Functionality: 100%
Last updated: 14 October 2025
Test book used: Fundamental Accessibility Tests: Basic Functionality, version 2.0.0 .
These tests were done by kerscher@montana.com.
Summary
Thorium Reader 3.2.2 on Windows 11 Insider beta build . Version 24 H2 build 26120.6690 In addition to the notes for the tests, I want to comment on how Narrator seems to lose focus of the DOM. I can be navigating by headings and then it forgets the DOM. I have switched to another application and come back and it seems to reload the dom.
| Test ID | Name | Description | Result | Notes |
|---|---|---|---|---|
| file-010 | Operating system/Platform accessibility: | If you are using a hardware device, it can be started independently and essential accessibility for starting and exiting applications is available. | Pass | |
| file-110 | The reading system can be activated independently | If you are using a reading app that requires you to create an online account then the complete getting started process should be accessible. | Pass | |
| file-210 | Open content | Open the Fundamental Accessibility Test book in the reading system. | Pass | |
| file-310 | Access list of available content in the reading system | Check if you can navigate inside the bookshelf. | Pass | Using tab, you can move through the bookshelf menu |
| nav-005 | The table of contents in the app presents the content hierarchy | Check if the table of Contents is accessible and its hierarchy is presented correctly by the reading system | Pass | Using ctrl + shift + n opens and takes you to the TOC. Going into scan mode allows you to navigate by headings. |
| nav-010 | Navigate to chapters through the Table of Contents | Check if you can navigate to a section by using the table of contents. | Pass | There is the heading and the link on the next line. Selecting the link and pressing enter takes you to the exact location. |
| nav-110 | Navigate content by pages | Check if you can navigate the content by pages. | Pass | Pressing CTRL + shift + P takes you to a dialog to insert a page. it automatically turns scan mode off and you can enter a page number. Pressing tab takes you to the go to page button and you are taken there. |
| nav-210 | Navigate forward and backward through reflowed content | Use any control or command to navigate forward and backwards in the book content. | Pass | In the scrolling mode, you can move through the whole chapter. CTRL + page takes you to the next chapter. CTRL + Pagedup takes you to the previous chapter If at any point you press ctrl + shift + n, you are taken to the table of contents and a ** indicates that you are at the TOC where your current reading location is positioned.. |
| nav-310 | Read navigation information | Use the "Where am I?" or any other similar command available in the reading system and check if you can get information about your current position in the book. | Pass | Using the shortcut CTRL + Shift + K gives you the where am I information. The dialogue closes automatically. |
| nav-410 | Perform a search, review the search results | Perform a search, review the search results and navigate to the selected search result in the content. | Pass | CTRL + F takes you to an edit box where you type in your search term. Press to perform the search. Search results areshown and you can tab to see the sentance where it was found and pressing enter takes you there. |
| nav-510 | Move across chapters without using TOC | Check if you can move across chapters without having to use the Table of Contents. | Pass | CTRL + Page up and page down takes you to the previous and next chapters. |
| anno-010 | Add a Bookmark or Highlight | Some reading systems may have a Highlight feature in place of Bookmarks. The tests for Bookmarks may then be performed with Highlights. | Pass | The CTRL + B inserts a bookmark in the file you are in. It is unclear if it is at the exact reading location. |
| anno-110 | Review and navigate Bookmarks or Highlights | Check if you can review and navigate Bookmarks or Highlights. | Pass | You can go to the bookmarks with CTRL + shift + b. You can navigate and get to them. It is a little awkward. |
| anno-210 | Add a note | Add a Note at this location in the book. Provide a few lines of text in the Note. | Pass | The keyboard shortcut is not working. I select text with Shift and arrow key. Then press Tab to activate the Annotation button in top toolbar. I changed the shortcut key to ctrl + h to add a highlight. I also modified the go to annotation/highlight with CTRL + shift + H, and this is working. |
| anno-310 | Review and navigate Notes | Check if you can review and navigate Notes. | Pass | It is not convenient to navigate to the Notes. Press Ctrl + Shift + B to bring up the Navigation options. Open the Annotation Tab. Select the Annotation to move to and press Enter. The Narrator focus lands before the the highlighted text. Because I changed the shortcut, this is working. To get the focus to the correct location, I think we need to figure out how to rout the system cursor to where Narrator has focus. I do not know how to do this yet. |
Results for Non-visual Reading: 81.25%
Last updated: 4 November 2025
Test book used: Fundamental Accessibility Tests: Non-Visual Reading, version 2.0.1 .
These tests were done by kerscher@montana.com.
Summary
Thorium Reader 3.2.2 on Windows 11 Insider beta build . Version 24 H2 build 26120.6690
| Test ID | Name | Description | Result | Notes |
|---|---|---|---|---|
| reading-010 | Initiate "read from here" | Focus on the beginning of a paragraph or a sentence and initiate reading. Reading should continue until interrupted by the user or at the end of the current document, e.g. current chapter. The text being read should preferably remain in view, but this is not a requirement to pass the test. | Pass | |
| reading-110 | Stop and resume reading at the same reading location | Initiate reading from any point in the book. Stop reading and note the last read position. Initiate reading again and check if reading starts at the last read location. | Pass | |
| reading-210 | All text should be read in the proper order | Sample text has been provided to test the reading order. The Paragraph 2 should be read after Paragraph 1. Note that visually Paragraph 2 is placed to the left of Paragraph 1 but it is second in the reading order. | Pass | |
| reading-310 | Image alternate text reading | Ensure that the alternate text for the image is available. | Pass | Use the Narrator command Narrator key + Alt + X to review the speech output |
| reading-420 | Footnote Reading | This tests the usability and functionality of footnotes. The markup includes the semantics that the reference is to a note,which could be announced to the reader. The destination could be a footnote or an endnote and announced to the reader. The link back to the original position has the semantics that it is a backlink and could also be announced to the reader. | Fail | You can easily find the footnote link and activate, but it is hard to read and return to the location. |
| reading-510 | TTS allows pause for indicating headings, paragraphs, list items, etc | The user should be able to identify the difference between content items such as headings, paragraphs or list items by sufficient pauses in the TTS reading or appropriate formatting in the Braille device. | Pass | |
| reading-610 | Navigate between the cells, rows and columns in the table | Check if you can navigate between the rows and columns of the table | Pass | |
| reading-710 | Navigate between internal hyperlinks | Check if you can navigate between internal hyperlinks. | Pass | The back button works and returns you, but Narrator loses its navigation mode, e.g., you cannot navigate by headings even though you are in scan mode. |
| reading-810 | Move to the next block item | Check if you can move to the next available page element e.g. paragraph, image or table by using a common key/gesture like swipe right, down arrow etc. | Pass | |
| reading-910 | Navigate by characters | Check if it is possible to navigate to next and previous character in the book text by way of any command or gesture. | Pass | |
| reading-1010 | Navigate by words | Check if it is possible to navigate to next and previous word in the book text by way of any command or gesture. | Pass | |
| reading-1110 | Navigate by lines | Check if it is possible to navigate to next and previous line in the book text by way of any command or gesture. | Pass | |
| reading-1210 | Navigate the content by headings | Check if you can move to the next and previous headings in this book without using the Table of Contents. | Pass | |
| reading-1310 | Select and copy text | Reading systems should provide the ability to copy pieces of text that could be used for notes, in quotations, or to facilitate searching terms contained in the book. In some cases, this could be achieved using an AT such as a screen reader, for instance with a dedicated cursor or other procedures. | Fail | Narrator allows the selection of a character or a word, but when you select a second word with ctrl + shift + right arrow, it selects everything below it and will not allow copying. |
| reading-1410 | MathML Reading | The block and inline math expressions below are in the MathML format. We want to determine that the Assistive Technology (AT) identifies the math and enables the detailed exploration of the math with the chosen AT. | Fail | The equation is not read properly. Cannot navigate inside the equation. |
| reading-1510 | TTS Change Languages Automatically | Screen readers and other Assistive Technology that use TTS should be able to detect language changes marked in XHTML content. A screen reader should be able to be configured to automatically change the TTS speaking language when it encounters a language change in the XHTML. This test contains English, German, French, and Italian. | Pass | Some of the voices do not support language shifts. I have not seen documentation on which of the voices support language changes. You will probably need to test. |