| Are ya hidden? | Display hidden content | Are ya hidden? source | Are ya hidden? test page | Ian Lloyd | 
    
      | Autocomplete | Display all fields with autocomplete | Autocomplete source | Autocomplete test page | Rachele DiTullio | 
    
      | Background images | Highlight all CSS background images | Background images source | Background images test page | Zoe Mickley Gillenwater | 
    
      | Blur page | Blur entire page | Blur page source |  | Thomas Park | 
    
      | Buttons | Display all buttons | Buttons source |  | Ian Lloyd | 
    
      | Character key shortcuts | Test all printable character shortcut keys | Character key shortcuts source | Character key shortcuts test page | Detlev Fischer | 
    
      | Toggle color scheme | Switch between light and dark color scheme | Toggle color scheme source | this page | Thomas Orlita | 
    
      | Complex table | Visualize headers and IDs in a complex table | Complex table source | Complex table test page | Jonathan Avila | 
    
      | Cursor 24x24 | Change cursor to 24px by 24px circle | Cursor 24x24 source | this page | Adrian Roselli | 
    
      | Cursor 44x44 | Change cursor to 44px by 44px square | Cursor 44x44 source | this page | Adrian Roselli | 
    
      | Design mode toggle | Make all of the text on page editable | Design mode toggle source |  | Christoph Wagner | 
    
      | Disable CSS | Drop all page styles | Disable CSS source |  | Sarah Higley | 
    
      | Duplicate IDs | Display duplicated ID values | Duplicate IDs source | Duplicate IDs test page | Jonathan Avila | 
    
      | Find Duplicate ARIA Roles | Roles appearing more than once for banner, contentinfo, and main | Find Duplicate ARIA Roles source | Find Duplicate ARIA Roles test page | Adrian Roselli | 
    
      | Focus everything | A technique for testing 1.3.2 Meaningful Sequence a tab path visualizer | Focus everything source | Focus everything test page | Ian Lloyd | 
    
      | Force focus indicator | Adds a 4 pixel solid orange outline around all focusable elements | Force focus indicator source |  | Paul J. Adam | 
    
      | Grayscale | Show entire page in gray scale (no color) | Grayscale source |  | Level Access | 
    
      | Grouped fields | Display grouped fields | Grouped fields source |  | Ian Lloyd | 
    
      | Document outline in console | Display level of all page headings in console | Document outline in console source | this page | Mu-An Chiou | 
    
      | Headings | Display level of all page headings | Headings source | this page | Jonathan Avila | 
    
      | Hide cursor | Hides cursor from window to encourage keyboard use | Hide cursor source |  | Iain Bean | 
    
      | Horizontal scroll | Alert when a horizontal scrollbar appears | Horizontal scroll source | Horizontal scroll test page | Jason Morris | 
    
      | HTML link | Copy page title and URL in an HTML anchor | HTML link source | this page | Jason Morris | 
    
      | Image info | Display image alt, role, title, aria-label, aria-labelledby | Image info source | Image info test page | Jonathan Avila | 
    
      | Images | Display all images | Images source | Images test page | Ian Lloyd | 
    
      | Inline styles | Highlight all elements with style attributes | Inline styles source | Inline styles test page | Adrian Roselli | 
    
      | Isolator | Isolate a portion of the page | Isolator source |  | Ian Lloyd | 
    
      | Keyboard visualizer | Creates an overlay to display typed keys on the underlying page | Keyboard visualizer source | this page | Sarah Higley | 
    
      | Language of page/parts | Display all lang attributes on page | Language of page/parts source | Language of page/parts test page | Jason Morris | 
    
      | Links | Display all links | Links source |  | Ian Lloyd | 
    
      | Markdown link | Copy page title and URL in markdown link format | Markdown link source | this page | Brian Cantoni | 
    
      | Non-underlined links | Display information about links without underlines | Non-underlined links source | Non-underlined links test page | Ian Lloyd | 
    
      | Page link | Copy page title and URL, separated by hyphens | Page link source | this page | Jason Morris | 
    
      | Parsing only | Reduce HTML validation results to 4.1.1 Parsing (A) only | Parsing only source | this page | Steve Faulkner | 
    
      | Placeholder contrast checker | Measure contrast of placeholder text | Placeholder contrast checker source | Placeholder contrast checker test page | Jason Morris | 
    
      | Re-enable selection | Unset user-select CSS property | Re-enable selection source | Re-enable selection test page | Adrian Roselli | 
    
      | Validate | Validate HTML of DOM | Validate source | this page | Deque | 
    
      | Save to Internet Archive | Submit current URL to the Internet Archive | Save to Internet Archive source | this page | Jesse Gardner | 
    
      | Lighthouse report | Run a Lighthouse scan on current URL (regardless of broswer) | Lighthouse report source | this page | Jeremy Keith | 
    
      | WAVE report | Run WebAIM WAVE on the current URL | WAVE report source |  | WebAIM | 
    
      | Show focus styles | Force visibility of all focus styles at the same time | Show focus styles source | Show focus styles test page | Ian Lloyd | 
    
      | Remove onpaste | Remove onpaste attributes from password inputs which fixes security theatre of preventing paste | Remove onpaste source | Remove onpaste test page | Jason Morris | 
    
      | Test CSP | Test for errors related Content Security Policy (CSP) | Test CSP source | this page | SecurityPolicyViolationEvent on MDN | 
    
      | Test local JS | Test for local JS support via bookmark | Test local JS source | this page | Accessible Name and Description Inspector (ANDI) help page | 
    
      | Text spacing | Test on WCAG 1.4.12 Text Spacing | Text spacing source | this page | Steve Faulkner | 
    
      | Text zoom 200% | Zoom text only (not page) size to 200% | Text zoom 200% source |  | Ashlee M. Boyer | 
    
      | Titles | Display all titles | Titles source |  | Ian Lloyd | 
    
      | a11y.css | Warns about possible risks and mistakes in HTML code | a11y.css source |  | Gaël Poupard | 
    
      | ANDI | Accessible Name & Description Inspector is a free accessibility testing tool | ANDI source |  | Accessible Solutions Branch of the Social Security Administration | 
    
      | ARIA usage | Report on ARIA usage on current URL | ARIA usage source |  | TPGi | 
    
      | ARIA | Display ARIA information for accessibility testing | ARIA source |  | Paul J. Adam | 
    
      | Contrast checker | Contrast checker for color combinations | Contrast checker source |  | WebAIM | 
    
      | HTML CodeSniffer | Checks HTML source code and detects violations of a defined coding standard | HTML CodeSniffer source |  | Squiz Labs | 
    
      | Label in name | Display label in name | Label in name source | Label in name test page | Jonathan Avila | 
    
      | Sa11y | The accessibility quality assurance assistant | Sa11y source | this page | Toronto Metropolitan University | 
    
      | Truncation | Identify instances of text-overflow: ellipsis | Truncation source | Truncation test page | Jason Morris | 
    
      | User Agent | Display current user agent string | User Agent source | this page | Thomas Orlita | 
    
      | Viewport | Display viewport width and height | Viewport source | this page | jakob-e | 
    
      | Open 1280x1024 | Opens a new window with the current URL at 1280x1024 | Open 1280x1024 source | Open 1280x1024 test page | Mike in a CSS Tricks article comment | 
    
      | Open 320x256 | Opens a new window with the current URL at 320x256 | Open 320x256 source | Open 320x256 test page | Mike in a CSS Tricks article comment | 
    
      | WTFocus | Display information with focusable elements | WTFocus source | this page | Ian Lloyd | 
    
      | Get YouTube UC ID | Fetches UC ID while on a YouTube profile page | Get YouTube UC ID source |  | Jason Morris |