Release Notes

This release includes support for declarative shadow roots, improved CSS support, plus the latest changes to the W3 HTML and CSS validators.

New Features

• Cascade support for nested CSS rules
• Support for declarative shadow roots (shadowrootmode)
• Validation of CSS in HTML style attributes

Rule Changes

• Updated browser compatibility checks to Chrome/Edge 142, FF 144, Opera 122, Safari 26
• Updated to October 2025 HTML 5 Validator
• Updated to October 2025 CSS Validator
• Updated to August 2025 URL Standard
• See full list of changed rules in engine 6.58

Fixes

• Various stability fixes and performance improvements

Two factor authentication is now available for user accounts. This improves the security of your account by making it harder for an attacker to gain access to your account even if the attacker knows your username and password.

New Features

• Two factor authentication is now available in the Account Security page

The design of this web app has been updated to match the main website, with improved navigation, modern design and new accessibility features.

New Features

• Easier access to account and subscription settings
• Simpler user interface
• Password strength meter
• Password show/hide controls
• Better auditing and improved security notifications

The main new feature in this release is support for the EN 301 549 European accessibility standard.

New Features

• Added support for EN 301 549
• Improved CSS error reporting

Rule Changes

• Updated browser compatibility checks to Chrome/Edge 138, FF 140, Opera 120
• Updated to June 2025 HTML 5 Validator
• Updated to June 2025 CSS Validator
• See full list of changed rules in engine 6.57

Fixes

• Various stability fixes and performance improvements

New Features

• Improvements to accessibility tree

Rule Changes

• Updated browser compatibility checks to Chrome/Edge 135, FF 137, Opera 117
• Updated to March 2025 HTML 5 Validator
• Updated to March 2025 CSS Validator
• See full list of changed rules in engine 6.56

Fixes

• Various stability fixes and performance improvements

New Features

• Added CSS code snippets to reports
• Cascade support for @layer rules
• Improved spell checking

Rule Changes

• Updated browser compatibility checks to Chrome/Edge 132, FF 133
• Updated screen reader compatibility checks to NVDA 2024, JAWS 2024, macOS 14 and iOS 17
• Updated to October 2024 HTML 5 Validator
• Updated to November 2024 CSS Validator
• See full list of changed rules in engine 6.55

Fixes

• Various stability fixes and performance improvements

Updated Scan Options tabs to match Mac/Windows desktop.

Fixes

• Updated Scan Options Links and Reports tabs to match Mac/Windows desktop

New Features

• Added HTML code snippets to reports
• Improved text analysis

Rule Changes

• Updated browser compatibility checks to Chrome/Edge 130, FF 131, Safari 18, Opera 114
• Updated to September 2024 HTML 5 Validator
• Updated to September 2024 CSS Validator
• Updates to ARIA 1.2 rules
• See full list of changed rules in engine 6.54

Fixes

• Various stability fixes and performance improvements

New Features

• Added support for :state() and :popover-open selectors
• Added support for CSS Text Module Level 4 properties
• Improved positioning of issues in source view
• Added thumbnails of site start page

Rule Changes

• Updated browser compatibility checks to Chrome 127, Edge 127, Firefox 128, Opera 111
• Updated to May 2024 HTML 5 Validator
• Updated to June 2024 CSS Validator
• Updated to March 2024 URL Standard
• See full list of changed rules in engine 6.53

Fixes

• Fixed robots.txt processing of /core/*.css?
• Take account of CSS pseudo elements in contrast calculations
• Out of memory on large sites with many HTTP errors
• Various stability fixes and performance improvements

New Features

• Improved CSS calc() support
• Improved ARIA role calculation for table headers

Rule Changes

• Updated browser compatibility checks to Chrome 124, Edge 124, Firefox 124, Opera 109
• Updated to March 2024 HTML 5 Validator
• Updated to February 2024 URL Standard
• See full list of changed rules in engine 6.52

Fixes

• Fixed robots.txt processing of /core/*.css?
• Take account of CSS pseudo elements in contrast calculations
• Out of memory on large sites with many HTTP errors
• Various stability fixes and performance improvements

New Features

• Now checks iframe srcdoc contents
• Improved background image text contrast detection
• Improved CSS support

Rule Changes

• Updated browser compatibility checks to Chrome 120, Edge 120, Firefox 120, Opera 105
• Updated to November 2023 HTML 5 Validator
• Updated to September 2023 URL Standard
• Updated user agent stylesheet to match November 2023 HTML Living Standard
• See full list of changed rules in engine 6.51

Fixes

• Make DOM tree for unclosed formatting elements match browser DOM instead of W3 validator
• Various stability fixes and performance improvements

New Features

• Added support for WCAG 2.2 (use Edit Scan to set WCAG version and level)
• Updated relative luminance per WCAG 2.1 Errata https://www.w3.org/WAI/WCAG21/errata/
• Detect text contrast against background images
• Updated report appearance
• Improved CSS support

Rule Changes

• Updated browser compatibility checks to Chrome 118, Edge 118, Firefox 118, Opera 102 and Safari 17
• Updated to September 2023 HTML 5 Validator
• See full list of changed rules in engine 6.50

Fixes

• Ignore meta redirects inside noscript
• Various stability fixes and performance improvements

New Features

• Updated spelling dictionaries
• Added support for additional CSS properties and at-rules

Rule Changes

• Updated browser compatibility checks to Chrome 114, Edge 114, Firefox 114, Opera 99
• Updated to May 2023 HTML 5 Validator
• Updated to May 2023 CSS Validator
• Updated to May 2023 URL Standard
• See full list of changed rules in engine 6.49

Fixes

• Improved text classification of links in French, German, Italian and Spanish
• Fix parsing of vue.js colon prefixed attributes like :aria-expanded
• Various stability fixes and performance improvements

New Features

• Added color samples next to rgb() values in reports
• Further improvements to rule performance
• Improved accessible name calculation for SVG elements

Rule Changes

• Updated browser compatibility checks to Chrome 111, Edge 111, Firefox 111, Opera 96
• Updated to March 2023 HTML 5 Validator
• Updated to March 2023 CSS Validator
• See full list of changed rules in engine 6.48

Fixes

• Fixed CSS var() replacement at end of minimized blocks
• Various stability fixes and performance improvements

New Features

• Updated User-Agent to match Chrome/Edge

New Features

• Improved detection of event handlers
• Rules run 2x faster on large pages
• Further updates for ARIA 1.2

Rule Changes

• Updated browser compatibility checks to Chrome 108, Edge 108, Firefox 108, Opera 93, Safari 16
• Updated to December 2022 HTML 5 Validator
• Updated to December 2022 CSS Validator
• See full list of changed rules in engine 6.47

Fixes

• Fixed cascading HTML validation errors when sub-trees contain nested invalid elements
• Various stability fixes and performance improvements

New Features

• Handle CSS variable substitutions like rgba( var(--rgb) var(--alpha) )
• Handle CSS variable substitutions in shorthand properties
• Rules run around 10% faster on large pages
• CSS runs much faster on large pages

Rule Changes

• Updated browser compatibility checks to Chrome 105, Edge 105, Firefox 104, Opera 90, Safari 15.6
• Updated screen reader compatibility checks to NVDA 2022, JAWS 2022, macOS 12.5 and iOS 15.6
• Updated to September 2022 HTML 5 Validator
• Updated to September 2022 CSS Validator
• See full list of changed rules in engine 6.46

Fixes

• Fixed focus style match for body:focus-within button
• Various stability fixes and performance improvements

New Features

• IE11 browser compatibility checks turned off by default now that IE11 is end-of-life on Windows 10
• Screen reader compatibility checks for IE11 removed
• CSS validation support for :has() relative selectors, content-visibility: and @media horizontal-viewport-segments and @media vertical-viewport-segments

Rule Changes

• Updated browser compatibility checks to Chrome 103, Edge 103, Firefox 101, Opera 88, Safari 15.4
• Updated to June 2022 HTML 5 Validator
• Updated to June 2022 CSS Validator
• Updated to May 2022 URL Standard
• Updates for ARIA 1.2 Candidate Recommendation
• See full list of changed rules in engine 6.45

Fixes

• Fixed leak with inherited CSS custom properties
• Fixed "This issue was found on another 1 pages" appearing unexpectedly in reports
• Various stability fixes and performance improvements

New Features

• Added CSS support for @layer rules

Rule Changes

• UUpdated browser compatibility checks to Chrome 100, Edge 100, Firefox 99, Opera 85
• Updated to March 2022 HTML 5 Validator
• Updated to March 2022 CSS Validator
• See full list of changed rules in engine 6.44

Fixes

• Aligned robots.txt processing with Googlebot and latest IETF draft
• Various stability fixes and performance improvements

New Features

• Improved CSS support :focus-within, :focus-visible, rex, rcap, rch, ric length units

Rule Changes

• Updated browser compatibility checks to Chrome 96, Edge 96, Firefox 95, Opera 82
• Updated to December 2021 HTML 5 Validator
• Updated to December 2021 CSS Validator
• See full list of changed rules in engine 6.43

Fixes

• Various stability fixes and performance improvements

New Features

• Improved CSS support including hwb(), lab() and lch() colors
• Updated spelling dictionaries

Rule Changes

• Updated browser compatibility checks to Chrome 95, Edge 95, Firefox 93, Opera 80, Safari 15
• Updated screen reader compatibility checks to NVDA 2021, JAWS 2021, macOS 11.5 and iOS 14.7
• Updated to October 2021 HTML 5 Validator
• Updated to October 2021 CSS Validator
• See full list of changed rules in engine 6.42

Fixes

• Various stability fixes and performance improvements

New Features

• Improved CSS performance
• Updated spelling dictionaries

Rule Changes

• Updated browser compatibility checks to Chrome 92, Edge 92, Opera 77 and Firefox 90
• Updated ARIA checks to ARIA in HTML Candidate Recommendation
• Updated to July 2021 HTML 5 Validator
• Updated to June 2021 CSS Validator
• Updated to July 2021 URL Standard
• See full list of changed rules in engine 6.41

Fixes

• Various stability fixes and performance improvements

New Features

• Renamed map styles to match desktop app

New Features

• Replaced RTF export with DOCX export
• Redesigned report inventory page
• Removed SWF support due to Flash reaching end-of-life on Dec 31, 2020

Rule Changes

• Updated browser compatibility checks to Chrome 88, Edge 88, Opera 73 and Firefox 84
• Updated to January 2021 HTML 5 Validator
• Updated to January 2021 CSS Validator
• Removed obsolete WCAG 1.0, Section 508 (2000) options
• Removed obsolete Privacy rules and BlackBerry compatibility checks
• See full list of changed rules in engine 6.40

Fixes

• Improved accessible description calculation
• Various stability fixes and performance improvements

New Features

• Added support for placeholder attribute in accessible name calculation

Rule Changes

• Updated browser compatibility checks to Safari 14, Chrome 86, Edge 86, Firefox 82 and Opera 72
• Updated to October 2020 HTML 5 Validator
• See full list of changed rules in engine 5.39

Fixes

• Fixed out of memory issue affecting some sites
• Handle deprecated HTML5 encodings like Windows-1252
• Various stability fixes and performance improvements

New Features

• Implemented presentational hint support for CSS
• Align user agent stylesheet with HTML Standard
• Align meta refresh parsing with HTML Standard
• Improved detection of links with duplicate labels
• Android compatibility reporting now uses Chromium WebView version numbering

Rule Changes

• Updated browser compatibility checks to Chrome 84, Edge 84 (Chromium), Firefox 78 and Opera 69
• Updated to July 2020 HTML 5 Validator
• Updated to July 2020 CSS Validator
• See full list of changed rules in engine 5.38

Fixes

• Adding a link block for a single resource on a CDN sometimes blocked all resources on the CDN
• CSS class selector didn't always match class attribute with multiple similar names (.daterange didn't match class='daterange-suffix daterange')
• Replaced LibTidy with custom pretty printer to fix mangled DOM HTML
• Various stability fixes and performance improvements

New Features

• Additional ACT Rules
• Link extraction from sitemap.xml
• Improved link extraction from DOM
• Implement ARIA presentational role conflict resolution
• Updated text classifier
• Updated spelling dictionaries

Rule Changes

• Updated browser compatibility checks to Chrome 81, Edge 81 (Chromium), Firefox 76 and Opera 68
• Updated to May 2020 HTML 5 Validator
• Updated to March 2020 CSS Validator
• Updated to April 2020 URL Standard
• See full list of changed rules in engine 5.37

Fixes

• Empty elements were sometimes dropped from the DOM view
• Wrong ID displayed for second ID error on page
• Wrong attribute value displayed for second attribute value error for same attribute on page
• Various stability fixes and performance improvements

New Features

• Added support for ACT Rules
• Defaults to checking WCAG 2.1 instead of WCAG 2.0

Rule Changes

• Updated browser compatibility checks to Chrome 79, Edge 79 (Chromium), Firefox 72 and Opera 66
• Updated screen reader compatibility checks to NVDA 2019, JAWS 2019, macOS 10.14 and iOS 12.4
• Updated to January 2020 HTML 5 Validator
• Updated to January 2020 CSS Validator
• Updated to November 2019 URL Standard
• Updated SEO rules to Jan 2020 Google Webmaster Guidelines
• See full list of changed rules in engine 5.36

Fixes

• Various stability fixes and performance improvements

New Features

• Improved CSS engine performance
• Add Media Queries 4 range syntax: @media screen and(10px < width < 1000px)
• Add alpha channel support to CSS contrast calculations
• Improved Accessible Name calculation

Rule Changes

• Updated browser compatibility checks to Chrome 77, Firefox 69 and Safari 13
• Updated to October 2019 HTML 5 Validator checks
• Updated to October 2019 CSS Validator checks
• See full list of changed rules in engine 5.35

Fixes

• Bring robots.txt processing into alignment with draft RFC
• Fixed missing data in CSV exports
• Various stability fixes and performance improvements

New Features

• Improved CSS engine error handling
• Improved CSS engine charset support
• Added CSS engine support for :any-link and :lang() selectors

Rule Changes

• Updated browser compatibility checks to Chrome 75 and Firefox 68
• Updated to July 2019 HTML 5 Validator
• Updated to July 2019 CSS validator checks
• See full list of changed rules in engine 5.34

Fixes

• Exporting RTF report failed when broken links contained specific characters
• Various stability fixes and performance improvements

New Features

• Redesigned UX for Sitemaps
• Improved CSS engine performance

Rule Changes

• Updated screen reader compatibility checks to NVDA 2018, JAWS 2018 and no longer checks WindowEyes (product discontinued)
• Updated compatibility checks to Chrome 74, Firefox 66 and Opera 60
• Updated to April 2019 HTML 5 Validator (W3 and WHATWG validators are now identical)
• Updated to April 2019 CSS validator checks
• See full list of changed rules in engine 5.33

Fixes

• Scanning Flash SWF is disabled by default in preparation for Flash end of life in 2020
• Various stability fixes and performance improvements

New Features

• Improved message formatting
• Improved CSS engine performance
• CSS media query support

Rule Changes

• Updated compatibility checks to Chrome 71, Firefox 64, Opera 57 and Edge 18
• Updated to January 2019 HTML 5 Validator (W3 and WHATWG validators are now identical)
• Updated to December 2018 CSS validator checks
• Updated to December 2018 URL Standard
• See full list of changed rules in engine 5.32

Fixes

• PDFs created by Chrome weren't being scanned
• Various stability fixes and performance improvements

New Features

• Improved CSS engine implements full CSS cascade
• Improved DOM snapshots
• New accessibility rules for Word documents
• Defaults to checking latest version of Safari on macOS

Rule Changes

• Updated compatibility checks to Chrome 70, Firefox 63, iOS 12, Opera 55 and Safari 12
• Updated to October 2018 HTML 5 validator checks
• Updated to October 2018 CSS validator checks
• See full list of changed rules in engine 5.31

Fixes

• Various stability fixes and performance improvements

New Features

• Added support for WCAG 2.1
• Added screen reader compatibility tests for JAWS, NVDA and Voiceover
• Improved placeholder text detection
• Defaults to checking IE11 instead of IE9, IE10 and IE11

Rule Changes

• Updated compatibility checks to Chrome 68, Edge 17, Firefox 61 and Opera 54
• Updated to July 2018 HTML 5 validator checks
• Updated to July 2018 CSS validator checks
• Updated to July 2018 URL Standard
• See full list of changed rules in engine 5.30

Fixes

• Various stability fixes

• Show recent scans on home page
• Added visible to team and me only sharing options
• Better MIME sniffing when Content-Type header missing
• Updated compatibility checks to Chrome 66, Firefox 60 and Opera 51
• Updated to March 2018 HTML 5 validator checks
• Updated to March 2018 CSS validator checks
• See full list of changed rules in engine 5.29
• Handle invalid UTF-8 sequences in Chinese PDF documents
• Missed some text-node only DOM changes
• Various stability fixes

• Redesigned CSS parser with improved CSS level 3 support
• Updated compatibility checks to Chrome 63, Firefox 58, Opera 49 and Edge 16
• Updated to December 2017 version of URL Standard
• Updated to December 2017 HTML 5 validator checks
• See full list of changed rules in engine 5.28
• Various stability fixes

• Enhancements to report appearance and improved issue details
• Updated compatibility checks to Firefox 56, Chrome 61, Opera 47, Safari 11 and iOS 11
• Updated to August 2017 version of URL Standard
• Updated to September 2017 HTML 5 validator checks
• See full list of changed rules in engine 5.27
• Improved scan performance
• Improved display of URLs in Arabic and Hebrew
• Aligned robots.txt processing with Google's robots.txt specification
• Better speech output in VoiceOver
• Various stability fixes

• Detect animated PNGs and WebP images
• Updated compatibility checks to Firefox 54, Chrome 59, Opera 45
• Updated to June 2017 version of URL Standard
• Updated to June 2017 HTML 5 validator checks
• See full list of changed rules in engine 5.26
• Better detection of duplicate pages
• Various stability fixes

• Added support for Section 508 Refresh
• Updated compatibility checks to Firefox 53, Chrome 58, Opera 44, Edge 15
• Updated to March 2017 HTML 5 validator checks
• Updated to March 2017 version of URL Standard
• See full list of changed rules in engine 5.25
• Various performance enhancements
• Various stability fixes

• Updated compatibility checks to Updated compatibility checks to Firefox 51, Chrome 55, Opera 41
• Updated to October 2016 version of Techniques for WCAG 2.0
• Updated to December 2016 HTML 5 validator checks
• See full list of changed rules in engine 5.24
• Various performance enhancements
• Various stability fixes

• Better Source View of minified files
• Additional CSS3 support
• Privacy rules disabled by default
• Updated compatibility checks to Firefox 49, Chrome 53, Opera 40, Safari 10 and Edge 14
• Updated to September 2016 HTML 5 validator checks
• See full list of changed rules in engine 5.23
• Various stability fixes

• Changed default for Internet Explorer compatibility from IE 7.0 to IE 8.0
• Improved appearance of printed reports
• Reduced memory requirements on large sites
• Much faster scanning large PDFs
• Updated compatibility checks to Firefox 47, Chrome 51 and Opera 37
• Updated to June 2016 HTML 5 validator checks (VNU 16.6.29)
• See full list of changed rules in engine 5.22
• Various stability fixes

• Faster starting scans
• Minor tweaks to report UI
• Support spellcheck HTML attribute
• Updated compatibility checks to Firefox 46, Chrome 49 and Opera 36
• Updated to March 2016 HTML 5 validator checks (VNU 16.3.3)
• Updated to March 2016 version of Techniques for WCAG 2.0
• See list of changed rules in scanner v5.21
• Blocked links were ignored for 301 and 302 redirects
• Various stability fixes

• Parse external SVG images
• Minor tweaks to report UI
• Further implementation of Matterhorn Protocol
• Updated compatibility checks to Firefox 44, Chrome 47, Opera 34 and Edge 13
• Updated to January 2016 HTML 5 validator checks (VNU 16.1.1)
• See list of changed rules in scanner v5.20
• Stopped bogus DOM changes and CSS warnings appearing inside SVG element
• Was unable to scan pages that returned '201 Created' HTTP code instead of '200 OK'
• Handle regex literal / division operator ambiguity in JavaScript parser
• Handle name spaced attributes in HTML 5
• Fix issue with CSS cascade in DOM
• Various stability fixes

• Updated spelling dictionaries for English and French
• More reporting of user impact for screen reader problems
• Initial implementation of Matterhorn Protocol
• Updated compatibility checks to Firefox 41, Chrome 45, Opera 32, Safari 9 and Edge
• Updated to September 2015 HTML 5 validator checks
• See list of changed rules in scanner v5.10
• Problem extracting links from pages with invalid HEAD section
• Cancelling a scan on a large site could take a long time
• Fixed spell check issue inside NOFRAMES
• Didn't detect missing ALT for some types of PDF graphics
• Wasn't able to scan when starting from an Angular #routing URL
• Reduced memory consumption on sites with lots of W3 validation errors

• Fixed formatting problems on /Reports pages
• Fixed scrolling problem on /Reports pages

• Updated compatibility checks to Firefox 39, Chrome 43, Opera 30
• Updated benchmarks to latest data
• Better help if site is blocked due to robots.txt
• Removed bogus characters that appeared when Excel CSV reports opened in Excel for Mac
• Fixed problem with some JavaScript links being case folded
• Fixed hex entity handling in links
• HTML5: Fixed problem with validation on pages with deeply nested DIVs
• HTML5: The CS language code (Czech) was incorrectly reported as deprecated
• HTML5: Treat role attribute as space separated list of ARIA roles
• HTML5: Fix problem validating camel case SVG attributes like viewBox
• See list of changed rules in scanner v5.9

• Now works better on small screen devices
• Better feedback if user has queued multiple scans

• Updated compatibility checks to Firefox 37, Chrome 41, Opera 28
• Updated to February 2015 version of Techniques for WCAG 2.0
• Updated to November 2014 HTML 5 validator checks
• Added more information to the Issue Report and Link Report Excel exports
• Redirected pages display redirected URL instead of original URL
• Improvements handling AngularJS sites
• SVG elements incorrectly flagged as invalid in HTML5 doctype
• See list of changed rules in scanner v5.8

• Updated compatibility checks to Firefox 35, Chrome 39, Opera 26 and Safari 8
• Updated to November 2014 HTML 5 validator checks
• Fixed issue extracting links from some invalid HTML files
• Treat http://www.example.com and http://www.example.com:80 as same site, but http://www.example.com:888 as different site
• Fixed problem scanning some PDFs
• See list of changed rules in scanner v5.7

• Updated compatibility checks to Firefox 32, Chrome 37, Opera 24 and iOS8
• Updated to September 2014 version of Techniques and Failures for WCAG 2.0
• Updated to August 2014 HTML 5 validator checks
• Added support for Angular.js routing and Backbone/Angular/Mustache templates
• Added picker for choosing browser version for compatibility rules
• Increased password strength requirements
• Fix: fixed problem checking corrupt PDFs
• Fix: fixed problem checking deeply nested HTML5 files
• See list of changed rules in scanner v5.6

• Updated compatibility checks to Firefox 29, Chrome 35 and Opera 21
• Updated to April 2014 version of Techniques and Failures for WCAG 2.0
• Updated to April 2014 HTML 5 validator checks
• Spell check meta descriptions and titles
• Improved detection of DOM changes
• Fix: Failed to detect broken links in Word 97-2003 .DOCs saved by Word 2010
• Fix: Fixed hang loading .ICO files with non-standard MIME types
• See list of changed rules in scanner v5.5

• Added "Create a Sitemap" option to Home page scan form

• Added change history - list of changes made to scans, users and other settings

• Update compatibility checks to IE 11, Safari 7, Firefox 26, Chrome 31 and Opera 17
• Updated to December 2013 HTML 5 validator checks
• Fix: Incorrect DOM changes applied inside TABLEs without TBODYs using XHTML 1.0 or 1.1 DOCTYPEs
• See list of changed rules in scanner v5.4

• User interface improvements including graphs of scan history
• Added button to stop running scans
• Increased maximum size of URLs from 1024 to 2048 characters
• Fixed issue that meant some custom spellings couldn't be added

• Minor user interface enhancements

• Update compatibility checks to iOS7, Firefox 24 and Chrome 29
• Updated to Sept 2013 HTML 5 validator checks
• Updated to Sept 2013 Techniques for WCAG2
• Improved RTF export formatting in wider range of word processors
• Much faster scanning some sites that were very slow to scan in previous versions
• Added support for PDF updates contained in XRefStms
• Treat robots.txt 401s and 403s the same as 404s
• Problem detecting broken links on sites that alias /page-name to /page-name/ and redirect from one to the other
• Fixed several problems scanning DOM
• Fixed crash scanning corrupt Excel and MP3 files
• See list of changed rules in scanner v5.3

• Added Administrator, Standard and Read Only user types

• Update compatibility checks to Firefox 21 and Chrome 27
• Updated to May 2013 HTML5 validator checks
• Updated to April 2013 edition of Usability.gov guidelines
• Accessibility problems that only appear in specific browsers, now say which browsers are affected
• Stats displayed in dashboard no longer affected by "pages shown for each issue" limit
• See list of changed rules in scanner v5.2

• Fix for occasional problems during trial signup
• WCAG 1.0 disabled by default for new customers, and accessibility guideline chooser reworked

• Fix: CreateUser sometimes failed for customers with custom password requirements
• Fix: Generic error message was displayed when Scan button on home page clicked before entering a URL
• Fix: Deleting all scan history made URL vanish from scans list if URL didn't have any scans scheduled

• Update compatibility checks to Firefox 19 and Chrome 24
• Added "What was Tested" tab to report
• Updated search engine rules
• Updated HTML 5.0 validation to December 2012 Candidate Recommendation
• Fix: Links with query parameters sometimes not extracted correctly from PDF files
• Fix: Performance enhancements scanning large documents
• Fix: Crash scanning corrupt PDFs and PowerPoint files
• See list of changed rules in scanner v5.1

• Better help for new users
• Added sort options to Scans page
• Added version picker to Browser Compatibility tab on Edit Scan page
• Fixed units problem for Max Page Weight
• Minor changes to layout

• Update compatibility checks to IE10, Firefox 16, Chrome 22, iOS6, Safari 6, Opera 12
• Compliance tab is now labeled Privacy to reflect the issues it reports
• Detect changes made to pages by JavaScript
• Added HTML 5.0 standards validation
• See list of changed rules in scanner v5.0

• Added HTML 5.0 standards validation

• Detect bogus rel=canonical links (bogus canonical links can cause massive loss of search traffic)
• Excel exports include multiple line numbers, rather than just the first line number a problem occurred on
• Added Excel Inventory report export (available for reports generated after June 9, 2012)
• Added support for Chrome 20 and Firefox 14
• The compatibility report summary counted disabled rules as failures
• Fixed poor performance scanning PDFs with hundreds of pages
• Don't warn about vendor specific tags now included in HTML5 draft
• Restrict deprecated rules to the HTML version they're deprecated in (some items deprecated in HTML4 are no longer deprecated in HTML5)
• See list of changed rules in scanner v4.7

• Fixed problems caused by cookie blockers, and improved error messages when required cookies are blocked

• Added new release notifier
• Improved scan report layout
• Fixed several exceptions

• Updated W3 DTDs to match validator.w3.org (pulls in fix for usemap in XHTML 1.1 Second Edition)
• Added compatibility checks for Firefox 9, 10, 11 and Chrome 16, 17 versions
• Fix: don't detect broken anchors in non-standard CSS e.g. behavior:url(#default#savefavorite)
• Fix: various false positives
• Fix: false negative: didn't detect empty headings
• Fix: false negative: <A ONCLICK> with no HREF cannot be operated from keyboard
• See list of changed rules scanner v4.6

• Fixed yellow error screen when clicking links to logged off account

• Enabled 30 day trial
• Added PowerMapper OnDemand beta
• Reworked schedule date UI
• Localized date/time formats (set preferred format through My Settings)

• Added compatibility rules for iOS5, plus recent Firefox and Chrome versions
• Replaced 'rule id' column with 'guidelines' column in Issue Report - Excel (rule id was an internal identifier)
• Word RTF report displayed current date instead of date report exported
• Links with invalid URL schemes weren't reported as broken (e.g. "hhttpp://example.com")
• Fixed problem where some URLs were displayed double encoded
• Added timeouts to WHOIS lookups (was slowing down some scans)
• Fixed false positives
• See list of changed rules scanner v4.5

• Progress bar now updates dynamically during scans
• Added options to Edit Scan for report limits, external links and link following
• Fixed exception that occurred when files were deleted during a server virus scan

• Better error message when clicking old scan notification email with link to deleted scan

• Export reports to Word RTF and Excel CSV (not available for scans completed prior to Sep 25)
• Various user interface improvements
• Added "Ignore Capitalized" spelling option
• Fixed problem saving custom spellings

• Increased page limit for weekly and monthly scans
• Reduced disk space usage for stored scans
• Wrong line numbers sometimes reported for broken anchors
• Fixed markup like <em>E</em>mphasis being reported as a spelling error

• Added password reset
• Added delete scans and scan history
• Added scope option to quick scan on home page
• Added BlackBerry, Firefox 5 and Chrome 12 to browser compatibility tests
• Expand All button in reports was slow on large sites with lots of errors
• Handle pages that specify different charsets in HTTP headers and META tags
• Handle windows-1256 (Arabic) character set correctly in rules
• Fixed false positives and false negatives
• See list of changed rules scanner v4.4