{"id":6268,"date":"2024-05-29T14:27:56","date_gmt":"2024-05-29T14:27:56","guid":{"rendered":"https:\/\/lite14.net\/blog\/?p=6268"},"modified":"2024-05-29T14:27:56","modified_gmt":"2024-05-29T14:27:56","slug":"how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode","status":"publish","type":"post","link":"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/","title":{"rendered":"How to Debug and Troubleshoot Tags with Google Tag Manager\u2019s Preview Mode"},"content":{"rendered":"<div class=\"flex-1 overflow-hidden\">\n<div class=\"react-scroll-to-bottom--css-dqcaj-79elbk h-full\">\n<div class=\"react-scroll-to-bottom--css-dqcaj-1n7m0yu\">\n<div class=\"flex flex-col text-sm pb-9\">\n<div class=\"w-full text-token-text-primary\" dir=\"auto\" data-testid=\"conversation-turn-3\" data-scroll-anchor=\"true\">\n<div class=\"py-2 juice:py-[18px] px-3 text-base md:px-4 m-auto md:px-5 lg:px-1 xl:px-5\">\n<div class=\"mx-auto flex flex-1 gap-3 text-base juice:gap-4 juice:md:gap-6 md:max-w-3xl lg:max-w-[40rem] xl:max-w-[48rem]\">\n<div class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex flex-grow flex-col max-w-full\">\n<div class=\"min-h-[20px] text-message flex flex-col items-start whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 juice:w-full juice:items-end overflow-x-auto gap-2\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"ef297ca7-0ffd-40f6-b9f8-7d9a5bfd49b2\">\n<div class=\"flex w-full flex-col gap-1 juice:empty:hidden juice:first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>Debugging and troubleshooting tags with Google Tag Manager (GTM) using its preview mode involves a series of steps. Here&#8217;s a comprehensive guide:<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#1_Enable_Preview_Mode\" >1. Enable Preview Mode<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#2_Connect_Your_Site\" >2. Connect Your Site<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#3_Understanding_the_Debug_Console\" >3. Understanding the Debug Console<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#4_Analyze_Tag_Firing\" >4. Analyze Tag Firing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#5_Inspect_Triggers\" >5. Inspect Triggers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#6_Review_Variables\" >6. Review Variables<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#7_Check_Data_Layer\" >7. Check Data Layer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#8_Address_Errors\" >8. Address Errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#9_Real-Time_Verification\" >9. Real-Time Verification<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/#10_Publish_Changes\" >10. Publish Changes<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"1_Enable_Preview_Mode\"><\/span>1. Enable Preview Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Open GTM:<\/strong> Log in to your Google Tag Manager account.<\/li>\n<li><strong>Enter Preview Mode:<\/strong> Click on the \u201cPreview\u201d button in the top right corner of the workspace. This will open the Tag Assistant interface in a new tab.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2_Connect_Your_Site\"><\/span>2. Connect Your Site<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Enter the URL:<\/strong> In the Tag Assistant interface, enter the URL of the site you want to debug and click \u201cStart.\u201d<\/li>\n<li><strong>Site Loads in Debug Mode:<\/strong> Your website will open in a new window with the debug console at the bottom of the page.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_Understanding_the_Debug_Console\"><\/span>3. Understanding the Debug Console<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The debug console is divided into several sections:<\/p>\n<ul>\n<li><strong>Summary:<\/strong> Shows an overview of all tags, triggers, and variables loaded on the page.<\/li>\n<li><strong>Tags:<\/strong> Displays tags that have fired and those that haven\u2019t, along with reasons.<\/li>\n<li><strong>Variables:<\/strong> Shows the current state of variables at different points during the page load.<\/li>\n<li><strong>Data Layer:<\/strong> Lists the contents of the data layer and changes over time.<\/li>\n<li><strong>Errors:<\/strong> Highlights any errors encountered.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4_Analyze_Tag_Firing\"><\/span>4. Analyze Tag Firing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Check Fired Tags:<\/strong> In the \u201cTags\u201d section, you can see which tags have fired on the page. This is useful to confirm if a tag is working as expected.<\/li>\n<li><strong>Check Non-Fired Tags:<\/strong> This shows tags that didn\u2019t fire, which can help identify why a tag isn\u2019t working.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5_Inspect_Triggers\"><\/span>5. Inspect Triggers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Trigger Conditions:<\/strong> In the \u201cTags\u201d section, click on a tag to see its trigger conditions. This helps verify if the conditions are set correctly.<\/li>\n<li><strong>Trigger Events:<\/strong> In the left panel, you can see the list of events that occurred on the page. Click on an event to see which tags fired during that event.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"6_Review_Variables\"><\/span>6. Review Variables<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Variable Values:<\/strong> Go to the \u201cVariables\u201d tab to see the values of different variables at each event. This can help troubleshoot why certain conditions might not be met.<\/li>\n<li><strong>Custom Variables:<\/strong> Ensure custom variables are being populated correctly as per your configurations.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"7_Check_Data_Layer\"><\/span>7. Check Data Layer<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Data Layer Changes:<\/strong> Review the \u201cData Layer\u201d tab to see how the data layer changes over time and ensure it contains the expected values.<\/li>\n<li><strong>Pushes:<\/strong> Verify that data layer pushes are happening correctly at the right times.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"8_Address_Errors\"><\/span>8. Address Errors<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Review Errors:<\/strong> In the \u201cErrors\u201d section, look at any errors listed and address them accordingly.<\/li>\n<li><strong>Tag Errors:<\/strong> If a specific tag has an error, clicking on it will provide more details.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"9_Real-Time_Verification\"><\/span>9. Real-Time Verification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Use Google Analytics Real-Time:<\/strong> If your tags are for Google Analytics, check the real-time report in Google Analytics to see if events, pageviews, or other hits are being sent correctly.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"10_Publish_Changes\"><\/span>10. Publish Changes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Once you have verified that your tags are working correctly in preview mode, you can publish the changes by clicking the \u201cSubmit\u201d button in GTM.<\/li>\n<\/ul>\n<p>By following these steps, you should be able to effectively debug and troubleshoot tags using Google Tag Manager\u2019s preview mode.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Debugging and troubleshooting tags with Google Tag Manager (GTM) using its preview mode involves a series of steps. Here&#8217;s a comprehensive guide: 1. Enable Preview&#8230;<\/p>\n","protected":false},"author":210,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[270],"tags":[],"class_list":["post-6268","post","type-post","status-publish","format-standard","hentry","category-digital-marketing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Debug and Troubleshoot Tags with Google Tag Manager\u2019s Preview Mode - Lite14 Tools &amp; 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:\/\/lite14.net\/blog\/2024\/05\/29\/how-to-debug-and-troubleshoot-tags-with-google-tag-managers-preview-mode\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Debug and Troubleshoot Tags with Google Tag Manager\u2019s Preview Mode - Lite14 Tools &amp; Blog\" \/>\n<meta property=\"og:description\" content=\"Debugging and troubleshooting tags with Google Tag Manager (GTM) using its preview mode involves a series of steps. 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