Project: HTML best practices

[estelle]

All HTML examples should follow best practices.

Media

• All images should include an alt attribute
  • Create spreadsheet of missing alt attributes
• All images should aslo include a height and width (newer best practice)
• All audio files should have a transcript, captions, and description
• All video files should have a transcript
• Video and audio should have autoplay=off (not sure this is necessary anymore)

Form elements

• No form control should exist without an associated label

  • checkbox
  • radio
  • hidden
  • text
  • password
  • tel
  • number
  • color
  • range
  • date/time
  • select
  • textarea

• Every form control should have an id (except in the rare case where implicit labels are used)

  • checkbox
  • radio
  • text
  • password
  • tel
  • number
  • color
  • range
  • date/time
  • select
  • textarea

• All input elements should include a name (and value if needed)

  • checkbox (value recommended)
  • radio (value required)
  • hidden (value required)
  • text
  • password
  • tel
  • number
  • color
  • range
  • date/time
  • select
  • textarea

• All checkboxes, radio buttons, and hidden input types should also include a value

  • checkboxes and radio buttons should be inside <fieldset>s
  • [ ]

• HTML docs should be standards compliant

  • doctype
  • html element should include a lang attribute.
  • charset
  • title
  • viewport meta

• Type attribute is NOT needed

  • script
  • stylesheet

Required attributes, elements, and content

• Ensure abbr has a title attribute unless the abbreviation is preceded or followed by the definition.
• Ensure all links have adequate content ("click here" is a no-no).
• Every <table> should have a table <caption>
  • in code examples
  • in markdown (how is this done?)

Deprecated content

• Most occurrences of i and b should be converted to em or strong, depending on the context #139
• Ensure acronym is no longer used.
• Figure out if hgroup is back. If no, remove it from all but the essential occurrences

[Seirdy]

Figure out if hgroup is back. If no, remove it from all but the essential occurrences

hgroup does seem to be back; a change to the HTML Living Standard now clarifies that it can define a subtitle.

See whatwg/html#7829

[Rumyra]

@estelle the HTML guidelines are here https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines/Writing_style_guide/Code_style_guide/HTML if you wanted to update to reflect your changes above 👍

[nschonni]

• All images should include an alt attribute

I turned back on the MD045 rule to see how many were left, since I think there has already been a bunch of cleanup

files/en-us/learn/common_questions/what_are_browser_developer_tools/index.md:145 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:153 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:154 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:155 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:156 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:157 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/forms/advanced_form_styling/index.md:158 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/getting_started_with_the_web/publishing_your_website/index.md:73 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/html/introduction_to_html/getting_started/index.md:65 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/html/tables/structuring_planet_data/index.md:66 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/client-side_web_apis/manipulating_documents/index.md:47 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/client-side_web_apis/manipulating_documents/index.md:79 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/client-side_web_apis/manipulating_documents/index.md:267 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/client-side_web_apis/third_party_apis/index.md:196 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/client-side_web_apis/third_party_apis/index.md:390 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/first_steps/silly_story_generator/index.md:62 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/first_steps/variables/index.md:99 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/first_steps/what_went_wrong/index.md:64 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/first_steps/what_went_wrong/index.md:87 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/first_steps/what_went_wrong/index.md:114 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/objects/adding_bouncing_balls_features/index.md:59 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/objects/json/index.md:198 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/javascript/objects/object_building_practice/index.md:50 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/performance/measuring_performance/index.md:90 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/performance/measuring_performance/index.md:94 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/server-side/express_nodejs/forms/delete_author_form/index.md:178 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/server-side/express_nodejs/forms/delete_author_form/index.md:188 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/server-side/express_nodejs/forms/delete_author_form/index.md:193 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/server-side/express_nodejs/forms/update_book_form/index.md:216 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/server-side/express_nodejs/routes/index.md:54 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/accessibility/index.md:129 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/accessibility/index.md:223 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/accessibility/index.md:306 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/accessibility/index.md:334 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:325 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:405 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:407 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:492 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:496 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:504 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/automated_testing/index.md:710 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:87 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:101 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:115 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:194 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:204 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/javascript/index.md:347 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/testing_strategies/index.md:124 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/testing_strategies/index.md:153 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/testing_strategies/index.md:235 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/testing_strategies/index.md:247 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/testing_strategies/index.md:253 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/your_own_automation_environment/index.md:602 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/your_own_automation_environment/index.md:666 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/your_own_automation_environment/index.md:728 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/learn/tools_and_testing/cross_browser_testing/your_own_automation_environment/index.md:796 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/add_a_button_to_the_toolbar/index.md:53 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/add_a_button_to_the_toolbar/index.md:57 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/anatomy_of_a_webextension/index.md:28 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/contextualidentities/index.md:16 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/devtools/panels/elementspanel/createsidebarpane/index.md:25 MD045/no-alt-text Images should have alternate text (alt text)        
files/en-us/mozilla/add-ons/webextensions/api/devtools/panels/extensionsidebarpane/index.md:20 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/find/find/index.md:96 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/find/find/index.md:98 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/find/find/index.md:227 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/menus/index.md:43 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/menus/index.md:49 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/menus/index.md:53 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/menus/index.md:59 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/notifications/index.md:20 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/pageaction/index.md:19 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/pkcs11/index.md:30 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/pkcs11/index.md:32 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/proxy/register/index.md:20 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/proxy/unregister/index.md:19 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/userscripts/working_with_userscripts/index.md:45 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/userscripts/working_with_userscripts/index.md:106 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/webnavigation/index.md:23 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/api/webrequest/index.md:21 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/browser_actions/index.md:11 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/extending_the_developer_tools/index.md:123 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/native_messaging/index.md:21 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/browser_action/index.md:10 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/context_menu_items/index.md:17 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/notifications/index.md:11 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/page_actions/index.md:14 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/popups/index.md:14 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/user_interface/sidebars/index.md:15 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md:16 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md:22 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md:28 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md:34 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/what_are_webextensions/index.md:44 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/your_second_webextension/index.md:29 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/your_second_webextension/index.md:401 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/your_second_webextension/index.md:403 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/add-ons/webextensions/your_second_webextension/index.md:405 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/mozilla/firefox/releases/3.5/icc_color_correction_in_firefox/index.md:15 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvas_api/tutorial/drawing_shapes/index.md:22 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvas_api/tutorial/drawing_shapes/index.md:305 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvas_api/tutorial/transformations/index.md:85 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvas_api/tutorial/transformations/index.md:127 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvas_api/tutorial/using_images/index.md:206 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvasrenderingcontext2d/clip/index.md:25 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvasrenderingcontext2d/createlineargradient/index.md:21 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvasrenderingcontext2d/linejoin/index.md:34 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvasrenderingcontext2d/rotate/index.md:25 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/canvasrenderingcontext2d/translate/index.md:29 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/channel_messaging_api/using_channel_messaging/index.md:40 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/channelmergernode/index.md:18 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/channelsplitternode/index.md:20 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/index.md:165 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/index.md:235 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/index.md:259 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/table/index.md:42 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/table/index.md:57 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/timeend/index.md:54 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/console/timelog/index.md:76 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/css_object_model/determining_the_dimensions_of_elements/index.md:24 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/css_object_model/determining_the_dimensions_of_elements/index.md:30 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:140 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:197 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:225 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:238 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:256 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/traversing_an_html_table_with_javascript_and_dom_interfaces/index.md:264 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/using_the_w3c_dom_level_1_core/index.md:31 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/document_object_model/whitespace/index.md:269 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/clientheight/index.md:36 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/clientwidth/index.md:33 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/getboundingclientrect/index.md:53 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/mouseenter_event/index.md:100 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/mouseenter_event/index.md:105 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/mouseleave_event/index.md:96 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/mouseleave_event/index.md:102 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/element/scrollheight/index.md:19 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/htmlelement/offsetheight/index.md:39 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/htmlelement/offsetleft/index.md:39 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/htmlelement/offsetwidth/index.md:37 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/navigator/registerprotocolhandler/web-based_protocol_handlers/index.md:40 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/notifications_api/index.md:32 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/notifications_api/using_the_notifications_api/index.md:21 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/presentation_api/index.md:17 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/service_worker_api/using_service_workers/index.md:42 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/service_worker_api/using_service_workers/index.md:52 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/service_worker_api/using_service_workers/index.md:108 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/service_worker_api/using_service_workers/index.md:161 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/stereopannernode/index.md:20 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/streams_api/concepts/index.md:25 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/streams_api/concepts/index.md:47 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/streams_api/index.md:30 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/textdecoder/index.md:24 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/web_audio_api/basic_concepts_behind_web_audio_api/index.md:390 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/web_audio_api/basic_concepts_behind_web_audio_api/index.md:394 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/web_storage_api/using_the_web_storage_api/index.md:103 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/web_storage_api/using_the_web_storage_api/index.md:107 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/webgl_api/matrix_math_for_the_web/index.md:275 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/webvr_api/using_the_webvr_api/index.md:41 MD045/no-alt-text Images should have alternate text (alt text)
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files/en-us/web/api/window/statusbar/index.md:52 MD045/no-alt-text Images should have alternate text (alt text)
files/en-us/web/api/xrwebgllayer/getnativeframebufferscalefactor/index.md:100 MD045/no-alt-text Images should have alternate text (alt text)
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files/en-us/web/guide/css/getting_started/challenge_solutions/index.md:231 MD045/no-alt-text Images should have alternate text (alt text)
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files/en-us/webassembly/concepts/index.md:99 MD045/no-alt-text Images should have alternate text (alt text)

[teoli2003]

It will be very interesting to turn this rule on once done. That way, no PR could be merged with a missing alt attribute. That won't guarantee the quality of the attribute's value, but at least its existence.

[rubiesonthesky]

Are you interested in PRs for

• fix single quotes in html to double quotes
• add missing lang attribute in html element

I can submit some. Found by eslint and html plugin. :)

[teoli2003]

Are you interested in PRs for

* fix single quotes in html to double quotes

These will be fixed automatically by Prettier (soon I hope), so that's not useful (as we will have to run Prettier anyway)

* add missing lang attribute in html element

I would gladly review such PRs (with 50-100 entries each)

[Elchi3]

Thanks for filing this OWD project proposal!

Can we clarify the scope here?

Is this about updating https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines/Writing_style_guide/Code_style_guide/HTML ?

Or about fixing all of MDN with regards to these best practices? (seems too large for a single project)

Or is the idea to invest into tooling to make sure HTML best practices are enforced? If so, is there a plan for this work?