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Ad Tag Validator Beta

Test HTML5 and third-party Display Ad Tags

Test and validate your ad tags with comprehensive analysis and real-time feedback. Ensure your ad tags are working correctly before deployment. Enjoy our beta features and provide feedback to help us improve while we finalize development.

Input Your Ad Tag for Testing

Paste your ad tag HTML/JavaScript content directly for preview

Accepts HTML, JavaScript, or iframe code

Preview and Validate All Major Display Ad Tag Formats

Test HTML5, Display, and JavaScript Ad Tags With Confidence.

The AdMeIn ad tag tester lets you inspect and troubleshoot a wide variety of formats, including HTML5 display ads, standard display ad tags, JavaScript tags, and other third-party ad scripts.

When you load a tag, the tester shows how the creative renders in a live preview, confirming your creative behaves exactly as intended before it’s used in a campaign.

  • Supports HTML5, JavaScript, iframe, and third-party ad tags
  • Sandboxed preview for safe testing of untrusted ad code
  • Real-time rendering to see exactly how ads will appear to users

Coming soonAdvanced analytics and detailed security reports to help you optimize and secure your ad tags.Reports on what scripts are executed, and which network calls are made. It’s ideal for catching errors and validating trackingResource load weight to ensure heavy ads don’t impact ad performance.

How to Use

  1. Paste your HTML5 or third-party display ad tag code into the input area.
  2. Click the "Test Ad Tag" button to initiate the testing process.
  3. Wait for the analysis to complete. This may take a few moments.
  4. Review the live preview of your ad tag in the preview section.
  5. Examine the detailed report for insights on security, network activity, and static analysis.
  6. Make any necessary adjustments to your ad tag based on the feedback provided.

Note: This tool is currently in beta. Some features may be limited or subject to change.

Explore The AdMeIn Gallery ShowcaseA library collection of Ad Tag Examples & Sample code with previews

Browse our free online collection of advertising examples and samples including HTML5 banners, rich media creatives, and display ads with working code samples. Our ad gallery is a library that showcases real-world implementations of HTML5 display advertising, interactive rich media formats, and standard display ad tags. Each example includes downloadable code, live preview capabilities, and direct testing integration with our ad tag validator.

  • VAST ad tag examples with code samples
  • Html5 banners, Rich Media and Display Ad examples included with code samples
Explore the Ad Gallery now

Frequently Asked Questions

    Q:What is the difference between HTML5 ads and display ad tags?

  • HTML5 ads are self-contained ad creatives built using HTML5, CSS, and sometimes JavaScript that run directly in the browser. Display ad tags are snippets of code (usually JavaScript) provided by ad servers that load and display ads on a publisher's website. HTML5 ads are the actual creative content, while display ad tags are a way to deliver ad creatives.

    • Q:How can I test an HTML5 ad tag using an HTML5 ad tag tester?

  • You can test an HTML5 ad tag by pasting it into an HTML5 ad tag tester that loads the creative in a controlled environment. The tester checks rendering, asset loading, clickTag behavior, JavaScript errors, network activity, and tracking functionality before the ad goes live.

    • Q:What does a display ad tag tester check for when validating my tag?

  • A display ad tag tester verifies ad rendering, impression tracking, click tracking, loading speed, blocked resources, JavaScript errors, and compatibility across browsers and devices. It ensures the tag loads correctly and follows display advertising standards.

    • Q:How do I debug issues in HTML5 ad tags or third-party display tags?

  • You can debug issues by using an ad debugging tool that exposes JavaScript errors, blocked resources, missing assets, tracking failures, redirect loops, and security issues. This helps identify why an ad fails to load or track correctly.

    • Q:How can I validate if my HTML5 ad is loading correctly?

  • You can validate your HTML5 ad by using an HTML5 ad validator that checks asset paths, file structure, clickTag functionality, HTTPS requirements, loading behavior, and code errors. This ensures the creative meets ad server rules and loads correctly.

    • Q:Why is my HTML5 ad not rendering and how can I fix it?

  • HTML5 ads may fail to render due to missing assets, incorrect file paths, mixed HTTP and HTTPS content, JavaScript errors, or unsupported libraries. Testing the ad in a tag tester reveals these problems so they can be fixed before publishing.

    • Q:What common errors does an HTML5 ad tester help identify?

  • An HTML5 ad tester helps identify missing files, broken asset paths, invalid clickTag implementation, JavaScript errors, mixed content issues, slow loading assets, CORS issues, and rendering failures. These are common causes of ad disapproval.

    • Q:How do I know if my display ad tag is firing impressions and clicks correctly?

  • A display ad tag tester captures all network requests from your tag, showing whether impression pixels, click trackers, and measurement scripts are firing successfully. It confirms that tracking is working before your campaign launches.

    • Q:Can an ad tag tester validate click-through URLs and tracking pixels?

  • Yes, an ad tag tester verifies click-through URLs, redirects, tracking pixels, and measurement requests. It shows whether they load, fail, or redirect incorrectly, helping ensure accurate tracking and user navigation.

    • Q:How can I test third-party JavaScript ad tags for performance issues?

  • You can test third-party JavaScript ad tags using a tag tester that measures file weight, load time, network requests, execution speed, and script errors. It highlights performance issues caused by heavy libraries or slow servers.

    • Q:How can I validate all assets in my HTML5 ZIP creative?

  • Upload your ZIP file to an HTML5 validator. The tool extracts your files, loads the index file, and confirms that all images, scripts, styles, and videos are present and linked correctly. Missing or mismatched files are flagged for fixing.

    • Q:How can I test JavaScript ad tags for console errors or blocked resources?

  • You can test JavaScript ad tags in a tag tester that exposes the console output and network logs. It highlights script errors, blocked resources, mixed content issues, missing libraries, and failed network requests.

    • Q:Why do some display ad tags load slowly?

  • Display ad tags may load slowly due to large file sizes, multiple tracking scripts, server latency, redirect chains, or heavy JavaScript libraries. A tag tester measures load time and highlights the assets or scripts causing delays.

    • Q:How can I validate a third-party ad tag before launching a campaign?

  • You can validate a third-party ad tag by loading it into a tag tester that simulates a real publisher environment. The tester checks rendering, security compliance, tracker firing, performance, and overall loading behavior.

    • Q:Can a tag testing tool show all network requests made by an ad creative?

  • Yes, most ad tag testing tools display a full list of network requests including images, scripts, styles, tracking pixels, and redirects. This helps verify tracking accuracy and identify any missing or blocked resources.