Debugging Login Forms: E2LLM (JSON Snapshots) Show the Hidden State

A

Alechko

Guest
The Pain: When Login Buttons Donโ€™t Work

You open a login page. The UI looks fine: an email field, a โ€œContinueโ€ button, and several โ€œLogin with Google/Apple/GitHubโ€ options.

But the test fails. The โ€œContinueโ€ button doesnโ€™t trigger, or one of the login options is disabled by a script. Selenium screenshots look normal, but QA canโ€™t see whatโ€™s really happening under the hood.

login form (email input + third-party login buttons)

Why Traditional Tools Miss This

  • Selenium or Playwright selectors only confirm visibility
  • Screenshots donโ€™t expose hidden attributes
  • QA spends hours in DevTools trying to guess why the button isnโ€™t working

Element to LLM: One Click to the Truth

With the Element to LLM browser extension, you capture the runtime DOM state of any element as JSON.

JSON snapshot catched by Element to LLM

For example, hereโ€™s what the extension reveals about the โ€œContinueโ€ button:


Code:
{
  "element": "button",
  "type": "submit",
  "textContent": "Continue",
  "disabled": true,
  "visibility": "visible",
  "validity": {
    "valid": false,
    "valueMissing": true
  }
}

Now you instantly see:
JSON snapshot shows that the โ€œContinueโ€ button is visible but disabled, and the hidden password field exists even though the UI doesnโ€™t show it.

Why It Matters

  • QA engineers can debug forms in seconds, not hours
  • No more blind spots: hidden or invisible elements are exposed
  • JSON format = machine-readable, can be stored or fed into automation pipelines

Conclusion
Login forms often fail in ways that are invisible to the naked eye. JSON snapshots make hidden states visible โ€” saving QA hours of frustration.

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