{"id":2224,"date":"2026-04-02T08:00:00","date_gmt":"2026-04-02T07:00:00","guid":{"rendered":"https:\/\/www.stefanvd.net\/blog\/?p=2224"},"modified":"2026-04-05T22:07:46","modified_gmt":"2026-04-05T21:07:46","slug":"browser-extension-store-mistakes","status":"publish","type":"post","link":"https:\/\/www.stefanvd.net\/blog\/2026\/04\/02\/browser-extension-store-mistakes\/","title":{"rendered":"3 Common Browser Extension Store Mistakes That Cause Rejection + Fix"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>Table of Contents<\/p><nav><ul><li><a href=\"#browser-extension-store-mistakes\">Browser Extension Store Mistakes<\/a><ul><li><a href=\"#one-commence-guideline-1\">One Commence Guideline<\/a><ul><li><a href=\"#text-description\">Text description<\/a><\/li><li><a href=\"#what-to-avoid\">What to avoid:<\/a><\/li><li><a href=\"#what-to-do\">What to do:<\/a><ul><li><a href=\"#browser-name\">Browser name<\/a><\/li><li><a href=\"#keywords\">Keywords<\/a><ul><li><a href=\"#best-practices\">Best practices:<\/a><\/li><\/ul><\/li><\/ul><\/li><li><a href=\"#images\">Images<\/a><\/li><li><a href=\"#store-requirements\">Store requirements:<\/a><ul><li><a href=\"#windows\">Operating System<\/a><\/li><\/ul><\/li><\/ul><\/li><li><a href=\"#code\">Code<\/a><ul><li><a href=\"#example\">Example:<\/a><\/li><\/ul><\/li><li><a href=\"#store-gallery\">Store Gallery<\/a><\/li><\/ul><\/li><li><a href=\"#resources\">Resources<\/a><\/li><li><a href=\"#conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>Publishing a browser extension looks simple at first: upload your ZIP file, add screenshots, write a description, and click submit to publish it to the store. Beginner browser extension store mistakes are common at this stage. In reality, every web browser store has its own hidden rules, review checks, and strict requirements. Ignoring even a small detail can lead to rejection, delays, or certificate test failures.<\/p>\n\n\n\n<p>In this developer article, I share real-world lessons learned from maintaining and publishing browser extensions across Google Chrome, Microsoft Edge, Firefox, Safari, Opera, and more. Such as my free and Open-Source <a href=\"https:\/\/www.turnoffthelights.com\" target=\"_blank\" rel=\"noopener\">Turn Off the Lights browser extension<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"browser-extension-store-mistakes\">Browser Extension Store Mistakes<\/h2>\n\n\n\n<p id=\"browser-extension-store-guidelines-what-every-developer-must-know\">Here are the browser extension store guidelines every developer should know. They are common standards you should follow for all web browsers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"one-commence-guideline-1\">One Commence Guideline<\/h3>\n\n\n\n<p>Before writing code or marketing text, understand one important rule: <strong>each web browser store reviews your extension independently<\/strong>. There is no universal rulebook that works everywhere.<\/p>\n\n\n\n<p>Some stores focus heavily on privacy, others on branding, and others on trademark protection. Treat every store as its own platform with unique expectations.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"text-description\">Text description<\/h4>\n\n\n\n<p>Your browser extension description is often the <strong>first reason extensions get rejected<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"what-to-avoid\">What to avoid:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do not mention competing browsers by name in the description (for example: Google Chrome, Firefox, Opera, Microsoft Edge).<\/li>\n\n\n\n<li>Avoid over-promising features that are not clearly available or visible in the browser extension.<\/li>\n\n\n\n<li>Do not state that any part of the extension is in beta. Only stable browser extensions are accepted in stores.<\/li>\n\n\n\n<li>Do not use product and trademarked names in your description without permission from the official developer or company.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"what-to-do\">What to do:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Keep the description general and platform-neutral<\/li>\n\n\n\n<li>Focus on features, not competitors<\/li>\n\n\n\n<li>Use clear, honest language<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"browser-name\">Browser name<\/h5>\n\n\n\n<p>Apple Safari and Microsoft Edge are very strict about competitor mentions. For example, this text will <strong>fail review<\/strong> on the Microsoft Edge Add-ons gallery:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>This extension is available also for Google Chrome, Opera, and Safari web browser.<\/em><\/p>\n<\/blockquote>\n\n\n\n<p>They will fail the certificate test. Instead, use a neutral approach:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>This browser extension is available for all modern web browser visit this link: www.turnoffthelights.com\/browser<\/em><\/p>\n\n\n\n<p>This avoids trademark conflicts and keeps store reviewers happy.<\/p>\n<\/blockquote>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"keywords\">Keywords<\/h5>\n\n\n\n<p>Keywords help discoverability, but they can also cause rejection if misused.<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"best-practices\">Best practices:<\/h6>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do <strong>not<\/strong> mention other browser extension names<\/li>\n\n\n\n<li>Do <strong>not<\/strong> use brand or trademarked keywords without rights<\/li>\n\n\n\n<li>Use feature-based keywords instead<\/li>\n<\/ul>\n\n\n\n<p>Good keyword examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dark mode<\/li>\n\n\n\n<li>productivity<\/li>\n\n\n\n<li>accessibility<\/li>\n\n\n\n<li>video enhancement<\/li>\n\n\n\n<li>privacy-friendly<\/li>\n<\/ul>\n\n\n\n<p>Bad keyword examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&#8220;YouTube Options extension&#8221;<\/li>\n\n\n\n<li>&#8220;Chrome official tool&#8221;<\/li>\n\n\n\n<li>competitor extension names<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"images\">Images<\/h4>\n\n\n\n<p>Screenshots are <strong>not decorative<\/strong>, they are part of the review process.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"store-requirements\">Store requirements:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Screenshots must match the <strong>actual browser User Interface<\/strong><\/li>\n\n\n\n<li>No mockups or edited web browser frames<\/li>\n\n\n\n<li>No screenshots from a different web browser<\/li>\n<\/ul>\n\n\n\n<p>For example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Safari screenshots \u2192 macOS<\/li>\n\n\n\n<li>Microsoft Edge screenshots \u2192 Windows<\/li>\n\n\n\n<li>Firefox screenshots \u2192 Windows<\/li>\n<\/ul>\n\n\n\n<p>Fake or mismatched screenshots are a fast way to get rejected.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"windows\">Operating System<\/h5>\n\n\n\n<p>According to <strong>StatCounter (December 2025)<\/strong>, global desktop OS usage is:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows 66.4%<\/li>\n\n\n\n<li>macOS 4.75%<\/li>\n\n\n\n<li>Linux 3.86%<\/li>\n\n\n\n<li>ChromeOS 1.24%<\/li>\n<\/ul>\n\n\n\n<p>Source: <a href=\"https:\/\/gs.statcounter.com\/os-market-share\/desktop\/worldwide\" target=\"_blank\" rel=\"noopener\">OS market Share from StatCounter<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"442\" src=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-1024x442.webp\" alt=\"Overview of active operatin system in the Browser Extension Store Mistakes blog post\" class=\"wp-image-2347\" srcset=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-1024x442.webp 1024w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-300x130.webp 300w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-768x332.webp 768w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-1536x664.webp 1536w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/operating-system-by-web-browser-2048x885.webp 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Statcounter global desktop OS from December 2025<\/figcaption><\/figure>\n\n\n\n<p>Because most users are on <strong>Windows<\/strong>, it is usually best to show screenshots taken on Windows for browsers such as Google Chrome, Firefox, Opera, and Microsoft Edge. For Apple platforms, you must use macOS screenshots. Do not use Chrome screenshots on the Apple App Store for your browser extension.<\/p>\n\n\n\n<p>User Interface details matter. Window buttons, system fonts, and taskbars differ between operating systems, and reviewers notice.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"code\">Code<\/h3>\n\n\n\n<p>One of the other browser extension store mistakes developers make is lack of transparency. If your browser extension uses <strong>Open-Source libraries or third-party code<\/strong>, transparency is critical.<\/p>\n\n\n\n<p>Some stores (especially Firefox Add-ons) require:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exact GitHub release links<\/li>\n\n\n\n<li>Clear license references<\/li>\n\n\n\n<li>No bundled &#8220;unknown&#8221; source files<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"example\">Example:<\/h4>\n\n\n\n<p>In the <strong>Turn Off the Lights<\/strong> browser extension, I use <strong>Chart.js<\/strong> to display graphs showing how often a web page is dimmed and on which days the screen is dimmed the most.<\/p>\n\n\n\n<p>For Firefox review:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I link directly to the <strong>specific Chart.js GitHub release<\/strong><\/li>\n\n\n\n<li>I use the <strong>UMD version<\/strong>, not a modified build<\/li>\n\n\n\n<li>I mention it clearly in the submission notes<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"920\" height=\"1024\" src=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note-920x1024.webp\" alt=\"Browser extension store mistakes to forget to mention the Firefox notes for reviewers\" class=\"wp-image-2346\" srcset=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note-920x1024.webp 920w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note-270x300.webp 270w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note-768x855.webp 768w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note-1381x1536.webp 1381w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/01\/firefox-review-note.webp 1456w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><figcaption class=\"wp-element-caption\">Browser extension store mistakes to forget to mention the Firefox notes for reviewers<\/figcaption><\/figure>\n\n\n\n<p>This saves time and avoids back-and-forth with reviewers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"store-gallery\">Store Gallery<\/h3>\n\n\n\n<p>Besides your own browser extension store mistakes. Each store where you publish your browser extension has its own way of showcasing new extensions, with its own style and layout. Some browser extension stores do not have a mobile version of their website.<\/p>\n\n\n\n<p>Many developers forget this: even if an extension store supports mobile viewing, it does not offer a dark mode version of the store.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Store<\/td><td>Support browser<\/td><td>Dark Mode<\/td><td>Mobile<\/td><\/tr><tr><td>Chrome Web Store<\/td><td>Google Chrome\/Chromium<\/td><td>\u2705 (test seen 16 November 2025)<\/td><td>\u274c<\/td><\/tr><tr><td>Edge add-ons gallery<\/td><td>Microsoft Edge<\/td><td>\u274c<\/td><td>\u2705<\/td><\/tr><tr><td>Firefox add-ons gallery<\/td><td>Firefox<\/td><td>\u274c<\/td><td>\u2705<\/td><\/tr><tr><td>Opera<\/td><td>Opera<\/td><td>\u274c<\/td><td>\u274c<\/td><\/tr><tr><td>Naver Whale<\/td><td>Naver Whale<\/td><td>\u274c<\/td><td>\u274c<\/td><\/tr><tr><td>Apple App Store<\/td><td>Safari<\/td><td>\u274c<\/td><td>\u2705<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>For some reason, I saw there was a test version of the Chrome Web Store supporting dark mode theme on 16 November 2025. But it is not always visible on the Chrome Web Store.<\/p>\n\n\n\n<p>As on 31 March 2026, the Chrome Web Store supports Dark Mode.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"551\" data-id=\"2378\" src=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-1024x551.webp\" alt=\"Chrome Web Store Dark Mode appearance theme dialog\" class=\"wp-image-2378\" srcset=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-1024x551.webp 1024w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-300x162.webp 300w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-768x414.webp 768w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-1536x827.webp 1536w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-appearance-2048x1103.webp 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"553\" data-id=\"2379\" src=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-1024x553.webp\" alt=\"Chrome Web Store Light Mode appearance theme\" class=\"wp-image-2379\" srcset=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-1024x553.webp 1024w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-300x162.webp 300w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-768x415.webp 768w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-1536x829.webp 1536w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-light-mode-2048x1106.webp 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"554\" data-id=\"2377\" src=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-1024x554.webp\" alt=\"Chrome Web Store Dark Mode appearance theme\" class=\"wp-image-2377\" srcset=\"https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-1024x554.webp 1024w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-300x162.webp 300w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-768x415.webp 768w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-1536x831.webp 1536w, https:\/\/www.stefanvd.net\/blog\/wp-content\/uploads\/2026\/05\/chrome-web-store-dark-mode-2048x1108.webp 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<p>So the stores of these vendors still have a lot of work to do to bring harmony to a common standard and provide a great experience for both dark mode users and mobile users.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"resources\">Resources<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/developer.chrome.com\/docs\/webstore\/program-policies\/best-practices\" target=\"_blank\" rel=\"noopener\">Chrome Web Store Best Practices and Guidelines<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/developer.apple.com\/app-store\/review\/guidelines\/\" target=\"_blank\" rel=\"noopener\">Apple App Review Guidelines<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/legal\/microsoft-edge\/extensions\/developer-policies\" target=\"_blank\" rel=\"noopener\">Developer policies for the Microsoft Edge Add-ons store<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/extensionworkshop.com\/documentation\/publish\/add-on-policies\/\" target=\"_blank\" rel=\"noopener\">Firefox Add-on Policies<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/help.opera.com\/en\/extensions\/publishing-guidelines\/\" target=\"_blank\" rel=\"noopener\">Opera Extension Guidelines<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2>\n\n\n\n<p>There is still a long way to go before all browsers follow one unified standard. Each web browser has its own limitations, privacy rules, and review culture. Some platforms are more flexible, while others are far more strict. Understanding common browser extension store mistakes helps developers avoid unnecessary rejections and delays.<\/p>\n\n\n\n<p>By following store guidelines, writing clear descriptions, using accurate screenshots, and respecting Open-Source licenses, you dramatically increase your chances of fast approval. Supporting multiple platforms is not just about compatibility, it is about delivering a better experience everywhere your users browse.<\/p>\n\n\n\n<p>If you found this guide about browser extension store mistakes useful and would like to support continued work on browser extensions and developer education, consider supporting my work. <a href=\"https:\/\/www.stefanvd.net\/donate\/\">Every donation, big or small, makes a huge difference<\/a>. Thank you for helping me continue this important work.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Publishing a browser extension looks simple at first: upload your ZIP file, add screenshots, write a description, and click submit to publish it to the store. Beginner browser extension store mistakes are common at this stage. In reality, every web browser store has its own hidden rules, review checks, and strict requirements. Ignoring even a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2353,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,9],"tags":[],"class_list":["post-2224","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-browser","category-programming"],"_links":{"self":[{"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/posts\/2224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/comments?post=2224"}],"version-history":[{"count":39,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/posts\/2224\/revisions"}],"predecessor-version":[{"id":2407,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/posts\/2224\/revisions\/2407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/media\/2353"}],"wp:attachment":[{"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/media?parent=2224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/categories?post=2224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.stefanvd.net\/blog\/wp-json\/wp\/v2\/tags?post=2224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}