Application changes made in the last year
For all application changes in the last 3 years see the extended change log.
For changes to our browser extension see the extension change log.
6th September 2025 - v18.4.0
- Small HTML and Print report improvements
 - Updated all libraries to latest versions
 - Tests updated in line with official specifications:
    
- HTML5 Living Standard, 03 September 2025
 - ARIA in HTML, 05 August 2025
 - WCAG 2.1, 06 May 2025
 - Core Accessibility API Mappings 1.2, 27 August 2025
 - HTML Accessibility API Mappings 1.0, 30 July 2025
 - Accessible Name and Description Computation 1.2, 17 June 2025
 - CSS Color Adjustment Module Level 1, 12 August 2025
 - CSS Positioned Layout Module Level 4, 8 July 2025
 - CSS Pseudo-Elements Module Level 4, 27 June 2025
 - CSS Shapes Module Level 1, 12 June 2025
 - CSS Anchor Positioning, 09 May 2025
 
 - Bug Fixes:
    
- A few CSS properties for SVG were displaying false positives
 
 
3rd May 2025 - v18.3.0
- Alongside the usual results, you can now output Printable and CSV Summary reports
 - Cookies can now be added to the cache
 - Several theme improvements with updated libraries
 - The Issues and Page(s) tabs on Reports have been swapped for ease of understanding
 - Other report and documentation improvements
 - Additional accessibility tests and improved ARIA support
 - Tests updated in line with official specifications:
    
- HTML5 Living Standard, 30 April 2025
 - ARIA in HTML, 09 April 2025
 - Core Accessibility API Mappings 1.2, 27 March 2025
 - Accessible Name and Description Computation 1.2, 03 April 2025
 - HTML Accessibility API Mappings 1.0, 02 April 2025
 - CSS Color Module Level 4, 24 April 2025
 - CSS Grid Layout Module Level 2, 26 March 2025
 - CSS Grid Layout Module Level 1, 26 March 2025
 - CSS Color Module Level 5, 18 March 2025
 - CSS Positioned Layout Module Level 3, 11 March 2025
 - CSS Box Alignment Module Level 3, 11 March 2025
 
 - Bug Fixes:
    
- The 
Minimise to trayoption was available on unsupported desktops - Multiple conflicting tools were allowed to run concurrently
 Reporting 301/302/303 redirects, sometimes gave false positives, and negatives
 - The 
 
4th January 2025 - v18.2.0
- Support for macOS Sequoia
 - Additional accessibility tests and more support for edge cases
 - Tests updated in line with official specifications:
    
- HTML5 Living Standard, 17 December 2024
 - ARIA in HTML, 23 December 2024
 - WCAG 2.2, 12 December 2024
 - WCAG 2.1, 12 December 2024
 - Core Accessibility API Mappings 1.2, 19 December 2024
 - Accessible Name and Description Computation 1.2, 11 December 2024
 - HTML Accessibility API Mappings 1.0, 11 December 2024
 - CSS Inline Layout Module Level 3, 18 December 2024
 - CSS View Transitions Module Level 2, 13 November 2024
 - CSS Anchor Positioning, 4 October 2024
 - CSS Text Module Level 3, 30 September 2024
 
 - Bug Fixes:
    
- Accessibility tests for adjacent links did not always ignore the anchor
 
 
7th September 2024 - v18.1.0
- GUI updates:
    
- You can now select accent colours for some basic themes (including macOS)
 - All numeric input now uses 
spinnersfor easier entry - Added separate control over the 
clearbutton forspinners - Improved title bar on macOS
 
 - Implemented virtual threads for higher broken link throughput
 - HTML and Accessibility test updates and improvements
 - Tests updated in line with official specifications:
    
- HTML5 Living Standard, 29 August 2024
 - HTML Accessibility API Mappings 1.0, 19 August 2024
 - Core Accessibility API Mappings 1.2, 13 August 2024
 - Accessible Name and Description Computation 1.2, 02 August 2024
 - ARIA in HTML, 07 May 2024
 - CSS Conditional Rules Module Level 3, 15 August 2024
 - CSS Inline Layout Module Level 3, 12 August 2024
 - CSS Positioned Layout Module Level 3, 10 August 2024
 - CSS Box Model Module Level 4, 4 August 2024
 - CSS Scroll Snap Module Level 2, 23 July 2024
 - CSS Containment Module Level 1, 25 June 2024
 - CSS Text Module Level 4, 29 May 2024
 - Media Queries Level 3, 21 May 2024
 - CSS Multi-column Layout Module Level 1, 16 May 2024
 - CSS View Transitions Module Level 2, 16 May 2024
 
 - Bug Fixes:
    
- Link pause was not always enabled when it should have been
 - Title text on macOS was hard to see when using a theme that contrasted the O/S theme
 - Application failure for DOM validation when using 
lab(),oklab(),lch(),oklch(), orcolor()CSS functions