How to Inspect the Browser Console for SeaText AI Errors

Quick answer

Press F12 (or Cmd+Option+I on Mac) to open Developer Tools. Click the Console tab. Errors appear in red and often include the script URL or a message like "Failed to load resource." Switch to the Network tab, reload the page, and filter for "seatext" to see if the snippet request succeeded (status 200) or failed (4xx/5xx).

Why the console matters for SeaText AI

SeaText AI runs as a JavaScript snippet embedded in your page. The snippet loads asynchronously to avoid blocking page render, as noted in the SPA integration guide. If the snippet fails to load, executes with a syntax error, or hits a cross-origin restriction, the AI agents (translation, CRO, Google Ads matching, bot protection) cannot activate. The browser console is the first place those failures surface because it captures both network failures and JavaScript runtime errors.

The snippet also stores an identifier in local storage. If the browser or an iframe blocks local storage, the script throws a security error that appears in the console. Understanding these mechanics helps you distinguish between a network problem, a script error, or a browser policy issue.

Prerequisites before you start

• A page where the SeaText snippet has been added. Installation guides exist for WordPress, Shopify, React, Vue, Angular, and custom HTML.
• Browser with Developer Tools: Chrome, Firefox, Safari, or Edge.
• Permission to access local storage — the snippet stores an ID there.
• If you run a Single Page Application (SPA), know the entry point file (index.html, main.tsx, etc.) where the snippet was injected.
• For mobile testing, a USB cable and enabled USB debugging (Android) or Web Inspector (iOS).

Step-by-step: Chrome / Edge / Brave (Chromium)

1. Open the page you want to test.
2. Press F12 or right-click → Inspect.
3. Select the Console tab.
4. Look for red lines containing "seatext", "SEATEXT", or the snippet domain.
5. Click the Network tab, check Disable cache, reload (Ctrl+R / Cmd+R).
6. Type "seatext" in the filter box. Verify the snippet request returns 200 OK and the response is JavaScript.
7. Optionally, enable Preserve log to keep errors across navigation.

Step-by-step: Firefox

1. Press F12 or Ctrl+Shift+K.
2. Choose the Console panel.
3. Errors show in red with a cross icon. Filter by typing "seatext" in the search box.
4. Open the Network tab, reload, and filter for the snippet URL.
5. Check the response body to confirm it is valid JavaScript.

Step-by-step: Safari (macOS)

1. Enable Develop menu: Safari → Settings → Advanced → Show Develop menu in menu bar.
2. Press Cmd+Option+I or Develop → Show Web Inspector.
3. Click Console. Errors appear in red.
4. Use the Network tab to confirm the snippet loaded with status 200.
5. If testing on iOS, connect the device, enable Web Inspector in Settings → Safari → Advanced, then select the device from the Develop menu on Mac.

Step-by-step: Mobile browsers (remote debugging)

Mobile browsers lack an F12 key. Use remote debugging instead.

1. Android (Chrome): Enable USB debugging in Developer Options. Connect phone to desktop. Open Chrome on desktop, go to chrome://inspect, find your device, click Inspect on the target tab.
2. iOS (Safari): Enable Web Inspector on iOS (Settings → Safari → Advanced). Connect to Mac. Open Safari on Mac, go to Develop menu, select your device and the open tab.
3. Once connected, use the desktop DevTools Console and Network tabs exactly as on desktop.

What SeaText AI errors typically look like

Based on the integration documentation and common browser behaviors, typical console messages include:

• Network failure: "Failed to load resource: net::ERR_CONNECTION_REFUSED" or 404/500 for the snippet URL. This means the script did not download.
• Cross-origin block: "Blocked by CORS policy" when the SPA serves the snippet from a different domain without proper Access-Control-Allow-Origin headers.
• Local storage denied: "SecurityError: Failed to read the 'localStorage' property" if the browser or iframe blocks storage. The SPA guide explicitly warns about this.
• Script execution error: "Uncaught SyntaxError" or "Uncaught TypeError" originating from the SeaText script — often a sign the snippet was truncated or modified during injection.
• Content Security Policy violation: "Refused to load the script because it violates the following Content Security Policy directive" — requires server-header changes.

Common mistake: checking only the Console

The Console shows JavaScript runtime errors, but a silent network failure (script never downloaded) may leave no red line in the Console. Always pair Console inspection with the Network tab reload check. The Network tab reveals HTTP status codes, response size, and timing that the Console cannot show.

Verification step after a fix

1. Clear the Console (Ctrl+L / Cmd+K).
2. Reload the page.
3. Confirm no new red errors appear.
4. In the Network tab, verify the snippet request returns 200 and the response size is > 0 bytes.
5. Trigger a SeaText feature (e.g., switch language, click a variant) and watch for new errors.

Limitations and when this approach does not apply

• Server-side rendering errors (e.g., Next.js getServerSideProps) never reach the browser console.
• If the snippet loads inside a sandboxed <iframe sandbox> without allow-scripts, the console may show nothing while the script is silently blocked.
• Content Security Policy (CSP) violations appear in the Console but require server-header changes, not snippet edits.
• Mobile browsers: use remote debugging as described above because F12 is unavailable on the device.
• Errors that occur before the snippet loads (e.g., in your own bootstrap code) may mask SeaText errors.

Advanced: Using console filters and preserving logs

Chrome and Edge let you filter the Console by typing "seatext" in the filter box. Firefox has a search field in the Console toolbar. Enable Preserve log (Chrome) or Persist Logs (Firefox) to keep errors across page navigations, which is essential for SPAs where route changes do not trigger full reloads. You can also right-click a Console message and choose Store as global variable to inspect the error object in detail.

Key facts

FAQ

What if the Console is clean but SeaText features still don't work?

Check the Network tab for a 200 response with an empty or malformed script body. Also verify the page has not stripped the snippet via a CSP script-src directive.

Can I filter Console messages to only SeaText?

Yes. In Chrome/Edge, type "seatext" in the Console filter box. In Firefox, use the search field in the Console toolbar.

Does the async attribute hide errors?

No. async only controls when the script downloads and executes. Errors still surface in the Console once the script runs.

What if I see a CORS error?

Your server must send Access-Control-Allow-Origin headers for the snippet domain, or host the snippet on the same origin.

How do I test on a mobile device?

Connect the phone via USB, enable USB debugging (Android) or Web Inspector (iOS), and use the desktop DevTools instance to inspect the mobile page's Console and Network tabs.

Is there a SeaText-specific error code list?

Not published. Treat any red Console line that references the SeaText script URL or variable names as a SeaText error and share the full stack trace with support.

Why does the snippet use local storage?

The SPA integration guide states the script stores an ID in local storage to maintain session continuity across page views in single-page applications.

Can a Content Security Policy block the snippet silently?

Yes. A CSP script-src directive that omits the snippet's origin will block execution. The error appears in the Console as a CSP violation.