The warning does not mean your app is dangerous. It simply means Google has not yet verified your identity and compliance with their API policies.
This is the standard method to stop a script from accessing your data (Gmail, Drive, Calendar, etc.).
The message “This application was created by a Google Apps Script user” is a security feature, not a bug. It protects users from malicious scripts. However, for legitimate developers, it creates unnecessary friction.
To remove it:
The process requires patience, especially with Google’s review team, but it is entirely possible. Verified apps build trust, increase adoption, and look professional.
If you are just prototyping, ignore the message. But before you launch a tool for real users, invest the time to remove that warning. Your users will thank you.
Have you successfully removed the Apps Script warning? Share your experience in the comments below.
To remove the "This application was created by a Google Apps Script user" banner, you generally need to change how you host or verify the application
. Google displays this message as a security feature to inform users that the app is not an official Google product and was created by a third party. Methods to Remove or Bypass the Warning The warning does not mean your app is dangerous
The most effective way to eliminate this banner is to avoid viewing the app directly via the script.google.com Embed in a Website or Google Sites If you embed your Web App into another webpage using an
, the banner is often suppressed. For this to work, you must set the X-Frame-Options in your Apps Script code to allow embedding: javascript HtmlService.createHtmlOutputFromFile(
) .setXFrameOptionsMode(HtmlService.XFrameOptionsMode.ALLOWALL); } Use code with caution. Copied to clipboard Google Workspace Verification
The banner typically does not appear for users within the same Google Workspace domain
as the script owner. If you are targeting external users, you must publish the script as a verified Google Workspace Add-on or associate it with a verified Google Cloud project Browser Extensions (Developer Workaround)
If you only need the banner gone for your own view (e.g., on a public display or TV), you can use browser extensions like "Custom JavaScript for websites" to inject CSS and hide the element. CSS to hide #warning display: none; Google Groups Why the Banner is There Security & Transparency
: It warns users that the app's creator is an individual user, not Google, preventing phishing or malicious data collection. Mobile Responsiveness Issues
: As of late 2023, the banner transitioned to a blue format that can cause scaling issues on mobile devices. Summary of Solutions Complexity External users Workspace Domain Internal organization users GCP Project Verification Public/External users Browser Extension Only the local viewer to embed your script into a Google Sites This is the standard method to stop a
To remove the "This application was created by a Google Apps Script user" banner, you must transition from a personal script to a Google Cloud Project (GCP) with an OAuth consent screen that has been verified by Google. Phase 1: Create a Standard Google Cloud Project
By default, Apps Script uses a "Default" project that triggers the warning. You need to link it to a manual project. Open your script at google.com. Go to Project Settings (gear icon).
Under Google Cloud Platform (GCP) Project, click Change project.
Enter the Project Number of a project you created in the Google Cloud Console. Phase 2: Configure the OAuth Consent Screen
The banner acts as a safety warning for unverified developers. To lift it, you must identify your "app."
In the GCP Console, go to APIs & Services > OAuth consent screen.
Select External (if you want people outside your workspace to use it) or Internal (for Google Workspace users only). Fill out the required App Information: App name: The name users will see. User support email: Your email. Developer contact info: Your email.
Add the Scopes your script uses (e.g., https://googleapis.com). Phase 3: Verification (The Critical Step) Remove Access: Click on the application name to
The banner will only disappear once Google trusts the application.
For Internal Apps: If you are a Google Workspace user and set the app to "Internal," the banner usually disappears immediately for members of your organization. For External Apps: You must click Submit for Verification.
Google will review your privacy policy and terms of service.
Once approved, the "unverified app" warning and the footer banner are removed. Quick Workarounds If you cannot go through full verification:
Google Workspace: Deploy the script within a managed organization. If the script and the user are in the same domain, the banner is often suppressed.
Web App URL: Ensure you are using the /exec URL and not the /dev URL, as the development mode always shows debugging headers.
Custom Domain: Embedding the script in a site via an