| Critical | Clickable controls should have an ARIA role.
| WCAG 2.1 A F54
Section 508 (2017) A F54
| 1078 |
| Critical | Clickable controls should be keyboard accessible.
| WCAG 2.1 A F15
Section 508 (2017) A F15
| 1078 |
| Critical | Each a element must contain text or an img with an alt attribute.
| WCAG 2.1 A F89
Section 508 (2017) A F89
| 438 |
| Critical | All onclick handlers should have an equivalent onkeyup or onkeydown handler.
| WCAG 2.1 A F54
Section 508 (2017) A F54
| 1466 |
| Critical | Content inserted with CSS is not read by some screen readers, and not available to people who turn off style sheets.
| WCAG 2.1 A F87
Section 508 (2017) A F87
| 76 |
| Critical | The element.attachEvent method was removed in Internet Explorer 11.
| Internet Explorer ≥ 11
| 1457 |
| Critical | The querySelectorAll() method is not implemented by some older browsers.
| Safari ≤ 3
| 1465 |
| Critical | Invalid CSS url() value.
-webkit-mask-image: data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> mask-image: data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> -webkit-mask-image: data:image/svg+xml;utf8, mask-image: data:image/svg+xml;utf8, | CSS Validation
| 78 80 384 387 |
| Critical | Element img is missing one or more required attributes.
Missing src src src src src | HTML5
| 526 556 586 616 646
...
|
| Critical | Duplicate attribute loading.
| HTML5
| 526 556 586 616 646
...
|
| Very Important | The CSS outline or border style on this element makes it difficult or impossible to see the dotted link focus outline.
| WCAG 2.1 AA F78
Section 508 (2017) AA F78
| 76 |
| Very Important | CSS custom properties are not supported by some browsers.
| Internet Explorer
| 76 |
| Very Important | The display: flex CSS property does not work correctly in some browsers.
| Internet Explorer ≤ 11
| 76 80 |
| Very Important | The CSS grid: property is not supported by some browsers.
| Android ≤ 56
Internet Explorer
Safari ≤ 10
Android
iPhone/iPad ≤ 10
| 80 |
| Very Important | The :focus-within CSS pseudo selector is not supported by all browsers.
| Android ≤ 59
Safari ≤ 10
iPhone/iPad ≤ 10.2
Internet Explorer
| 80 |
| Very Important | The CSS transform: property is not supported by some older browsers.
| Android ≤ 35
Safari ≤ 8
iPhone/iPad ≤ 8
| 76 80 |
| Very Important | Avoid underlined text - people will click on it and think it's a broken link.
| Usability.gov 10:4
| 76 |
| Very Important | Use label elements for each data entry field to show what data is expected.
| Usability.gov 13:5
| 485 1070 1140 |
| Very Important | Omitting img width or height attributes makes the page layout jump about as images load.
| Usability.gov 14:3
W3C
| 124 |
| Very Important | Unknown pseudo-element or pseudo-class name.
-ms-lang( -ms-lang( | CSS Validation
| 76 245 |
| Important | The box-shadow: CSS property is not supported by older browsers.
| Safari ≤ 5.1
| 76 |
| Important | The content:none CSS value is not supported by older browsers.
| Safari ≤ 6
iPhone/iPad ≤ 6
Android ≤ 10
| 76 |
| Important | The position:sticky CSS property is only supported by Firefox 32 and Safari 6.1.
| Chrome
Android
Edge
Internet Explorer
Opera
Safari ≤ 6
Android
iPhone/iPad ≤ 7
| 76 |
| Important | The figure element is not supported by older browsers.
| Android ≤ 7
Safari ≤ 4
Android ≤ 2
| 201 224 247 270 448
...
|
| Important | Search engines may penalize invisible text where text color is nearly identical to the background color.
The colors used are:
color: rgb(255,255,255);background-color: rgb(255,255,255);
color: ;background-color: ; | Google
Yahoo
Bing
| 76 80 |
| Important | No meta description tag found. Use a description tag that accurately describes the contents of a web page.
| Yahoo
Google
Bing
| 1 |
| Important | Use link text between 3 and 100 characters so it's long enough to be understood, but avoids line wrapping.
| Usability.gov 10:11
| 199 222 245 268 291
...
|
| Important | Use at least a 12-point font on all web pages.
| Usability.gov 11:8
| 76 80 |
| Important | Property doesn't exist in CSS.
background-break background-break | CSS Validation
| 76 269 |
| Information | CSS hack or vendor extension used.
`*zoom` `*zoom` | CSS Validation
| 76 245 |
| Information | Property or at-rule is vendor specific.
-moz-text-size-adjust -moz-text-size-adjust -webkit-overflow-scrolling -webkit-transform -webkit-transform | CSS Validation
| 73 73 114 230 230
...
|
| Information | Spell checking was not enabled for this scan.
|
| 1 |
| Critical | The label element is blank.
| WCAG 2.1 A 4.1.2
Section 508 (2017) A 4.1.2
| 2020 2023 2087 2119 2122 |
| Critical | Each a element must contain text or an img with an alt attribute.
| WCAG 2.1 A F89
Section 508 (2017) A F89
| 975 |
| Critical | All onclick handlers should have an equivalent onkeyup or onkeydown handler.
| WCAG 2.1 A F54
Section 508 (2017) A F54
| 2631 |
| Critical | Content inserted with CSS is not read by some screen readers, and not available to people who turn off style sheets.
| WCAG 2.1 A F87
Section 508 (2017) A F87
| 122 172 252 276 |
| Critical | The element.attachEvent method was removed in Internet Explorer 11.
| Internet Explorer ≥ 11
| 2609 |
| Critical | The querySelectorAll() method is not implemented by some older browsers.
| Safari ≤ 3
| 2631 |
| Critical | Invalid CSS url() value.
-webkit-mask-image: data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> mask-image: data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> | CSS Validation
| 391 394 |
| Critical | Element img is missing one or more required attributes.
Missing src src src src src | HTML5
| 535 595 647 809 821
...
|
| Critical | Duplicate attribute loading.
| HTML5
| 535 647 809 821 831
...
|
| Very Important | The CSS outline or border style on this element makes it difficult or impossible to see the dotted link focus outline.
| WCAG 2.1 AA F78
Section 508 (2017) AA F78
| 252 |
| Very Important | CSS custom properties are not supported by some browsers.
| Internet Explorer
| 377 |
| Very Important | The display: flex CSS property does not work correctly in some browsers.
| Internet Explorer ≤ 11
| 80 81 88 94 100
...
|
| Very Important | The CSS grid: property is not supported by some browsers.
| Android ≤ 56
Internet Explorer
Safari ≤ 10
Android
iPhone/iPad ≤ 10
| 394 395 |
| Very Important | The :focus-within CSS pseudo selector is not supported by all browsers.
| Android ≤ 59
Safari ≤ 10
iPhone/iPad ≤ 10.2
Internet Explorer
| 403 |
| Very Important | The CSS transform: property is not supported by some older browsers.
| Android ≤ 35
Safari ≤ 8
iPhone/iPad ≤ 8
| 119 122 138 237 244
...
|
| Very Important | The element.dataset property is not supported in Internet Explorer 10 or Safari 5 and earlier.
| Safari ≤ 5
| 2617 |
| Very Important | Avoid underlined text - people will click on it and think it's a broken link.
| Usability.gov 10:4
| 276 |
| Very Important | Use label elements for each data entry field to show what data is expected.
| Usability.gov 13:5
| 1345 2091 2181 |
| Very Important | Omitting img width or height attributes makes the page layout jump about as images load.
| Usability.gov 14:3
W3C
| 448 597 998 1245 1992 |
| Very Important | Unknown pseudo-element or pseudo-class name.
-ms-lang( | CSS Validation
| 252 |
| Important | The box-shadow: CSS property is not supported by older browsers.
| Safari ≤ 5.1
| 80 119 122 189 236
...
|
| Important | The content:none CSS value is not supported by older browsers.
| Safari ≤ 6
iPhone/iPad ≤ 6
Android ≤ 10
| 377 |
| Important | The position:sticky CSS property is only supported by Firefox 32 and Safari 6.1.
| Chrome
Android
Edge
Internet Explorer
Opera
Safari ≤ 6
Android
iPhone/iPad ≤ 7
| 80 122 |
| Important | The figure element is not supported by older browsers.
| Android ≤ 7
Safari ≤ 4
Android ≤ 2
| 534 594 995 1185 1297
...
|
| Important | Using rel=nofollow on internal links dilutes PageRank flow through your site.
| Google
| 1206 |
| Important | Search engines may penalize invisible text where text color is nearly identical to the background color.
The colors used are:
color: rgb(255,255,255);background-color: rgb(255,255,255);
color: ;background-color: ; | Google
Yahoo
Bing
| 172 398 |
| Important | Use at least a 12-point font on all web pages.
| Usability.gov 11:8
| 80 81 93 114 118
...
|
| Important | Property doesn't exist in CSS.
background-break | CSS Validation
| 276 |
| Information | CSS hack or vendor extension used.
`*zoom` | CSS Validation
| 252 |
| Information | Property or at-rule is vendor specific.
-moz-text-size-adjust -moz-text-size-adjust -webkit-overflow-scrolling -webkit-transform -webkit-transform | CSS Validation
| 80 80 121 237 237
...
|