{"id":7626,"date":"2015-12-21T11:09:29","date_gmt":"2015-12-21T19:09:29","guid":{"rendered":"http:\/\/blog.mozilla.org\/addons\/?p=7626"},"modified":"2016-01-29T14:50:12","modified_gmt":"2016-01-29T22:50:12","slug":"webextensions-in-firefox-45-2","status":"publish","type":"post","link":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/","title":{"rendered":"WebExtensions in Firefox 45"},"content":{"rendered":"<p><a href=\"https:\/\/blog.mozilla.org\/addons\/2015\/08\/21\/the-future-of-developing-firefox-add-ons\/\">In August<\/a> we announced that work had begun on the WebExtensions API as the future of developing add-ons in Firefox. This post covers the progress we\u2019ve made since then.<\/p>\n<p>WebExtensions is currently in an <strong>alpha state<\/strong>, so while this is a great time to <a href=\"https:\/\/wiki.mozilla.org\/WebExtensions\">get involved<\/a>, please keep in mind that things might change if you decide to use it in its current state. Since August,  we&#8217;ve closed 77 bugs and ramped up the WebExtensions team at Mozilla. With the release of <a href=\"https:\/\/wiki.mozilla.org\/RapidRelease\/Calendar#Future_branch_dates\">Firefox 45<\/a> in March 2016, we\u2019ll have full support for the following APIs: alarms, contextMenus, pageAction and browserAction. Plus a bunch of partially supported APIs: bookmarks, cookies, extension, i18n, notifications, runtime, storage, tabs, webNavigation, webRequest, windows.<\/p>\n<p>A full list of the <a href=\"https:\/\/developer.mozilla.org\/en-US\/Add-ons\/WebExtensions\/Chrome_incompatibilities\">API differences is available<\/a>, and you can also follow along on the state of WebExtensions on <a href=\"http:\/\/arewewebextensionsyet.com\">arewewebextensionsyet.com<\/a>. All add-ons built with WebExtensions are fully  compatible with a multiprocess Firefox and will work in Chrome and Opera.<\/p>\n<p>Beyond APIs, support is being added to <a href=\"https:\/\/addons.mozilla.org\">addons.mozilla.org<\/a> to enable developers to upload their add-ons and have them tested, that should be ready for <a href=\"https:\/\/wiki.mozilla.org\/RapidRelease\/Calendar#Future_branch_dates\">Firefox 44<\/a>. Documentation is being <a href=\"https:\/\/developer.mozilla.org\/en-US\/Add-ons\/WebExtensions\">worked on in MDN<\/a> and a set of example <a href=\"https:\/\/developer.mozilla.org\/en-US\/Add-ons\/WebExtensions\/Examples\">WebExtensions is available<\/a>.<\/p>\n<p>Over the coming months we will work  our way towards a <strong>beta<\/strong> in <a href=\"https:\/\/wiki.mozilla.org\/RapidRelease\/Calendar#Future_branch_dates\">Firefox 47<\/a> and the <strong>first stable release<\/strong> in <a href=\"https:\/\/wiki.mozilla.org\/RapidRelease\/Calendar#Future_branch_dates\">Firefox 48<\/a>. If you\u2019d like to jump in to help, or get your API added, then please join us on our <a href=\"https:\/\/mail.mozilla.org\/listinfo\/dev-addons\">mailing list<\/a> or at one of our <a href=\"https:\/\/wiki.mozilla.org\/WebExtensions#Communication_and_meetings\">public meetings<\/a>.<\/p>\n<p>Your contributions are appreciated!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In August we announced that work had begun on the WebExtensions API as the future of developing add-ons in Firefox. This post covers the progress we\u2019ve made since then. WebExtensions &hellip; <a class=\"go\" href=\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/\">Read more<\/a><\/p>\n","protected":false},"author":271,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,278886],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>WebExtensions in Firefox 45 - Mozilla Add-ons Community Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andy McKay\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/\",\"name\":\"WebExtensions in Firefox 45 - Mozilla Add-ons Community Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#website\"},\"datePublished\":\"2015-12-21T19:09:29+00:00\",\"dateModified\":\"2016-01-29T22:50:12+00:00\",\"author\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/7e1881db0e8a23a4a06695f8a0efd6b8\"},\"breadcrumb\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blog.mozilla.org\/addons\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"WebExtensions in Firefox 45\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#website\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/\",\"name\":\"Mozilla Add-ons Community Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.mozilla.org\/addons\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/7e1881db0e8a23a4a06695f8a0efd6b8\",\"name\":\"Andy McKay\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ad304e7a7d4f6fba05a81b10810fe6fd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ad304e7a7d4f6fba05a81b10810fe6fd?s=96&d=mm&r=g\",\"caption\":\"Andy McKay\"},\"description\":\"Andy is an Engineering Manager at Mozilla. As a Canadian he tweets and blogs about curling, skiing, politics, maple syrup, bears and all things from the great white north.\",\"sameAs\":[\"http:\/\/mckay.pub\",\"https:\/\/x.com\/andymckay\"],\"url\":\"https:\/\/blog.mozilla.org\/addons\/author\/amckaymozilla-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"WebExtensions in Firefox 45 - Mozilla Add-ons Community Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/","twitter_misc":{"Written by":"Andy McKay","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/","url":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/","name":"WebExtensions in Firefox 45 - Mozilla Add-ons Community Blog","isPartOf":{"@id":"https:\/\/blog.mozilla.org\/addons\/#website"},"datePublished":"2015-12-21T19:09:29+00:00","dateModified":"2016-01-29T22:50:12+00:00","author":{"@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/7e1881db0e8a23a4a06695f8a0efd6b8"},"breadcrumb":{"@id":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/blog.mozilla.org\/addons\/2015\/12\/21\/webextensions-in-firefox-45-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blog.mozilla.org\/addons\/"},{"@type":"ListItem","position":2,"name":"WebExtensions in Firefox 45"}]},{"@type":"WebSite","@id":"https:\/\/blog.mozilla.org\/addons\/#website","url":"https:\/\/blog.mozilla.org\/addons\/","name":"Mozilla Add-ons Community Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blog.mozilla.org\/addons\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/7e1881db0e8a23a4a06695f8a0efd6b8","name":"Andy McKay","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/ad304e7a7d4f6fba05a81b10810fe6fd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ad304e7a7d4f6fba05a81b10810fe6fd?s=96&d=mm&r=g","caption":"Andy McKay"},"description":"Andy is an Engineering Manager at Mozilla. 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