Effective: 26 June 2026
Last updated: 26 June 2026
Your privacy is important to us. It is our policy to respect your privacy and to comply with any applicable law and regulation regarding personal information we may handle in connection with our browser extension, HALO SEO — AI & LLM Page Analyser ("the Extension"), and its associated services.
The Extension is a productivity tool that analyses the web page you are currently viewing for SEO, technical, E-E-A-T and LLM-visibility signals, and can generate AI-powered recommendations. It is developed and published by A Latty, trading as humwhistle (humwhistle.com), United Kingdom. For privacy questions, contact dev@humwhistle.com.
This policy explains what data the Extension handles, how it is used, where it is stored, who it is shared with, and your rights.
This section sets out, plainly, exactly what the Extension does with data. The more detailed sections below expand on it.
The Extension only accesses data when you actively run a scan, or when you enter information into its settings. Specifically:
alt attributes and source URLs; links and link attributes; structured data (JSON-LD schema); author and publication dates; and the page's text content for word-count and readability analysis.The Extension does not collect your name, email address, postal address, date of birth, device identifiers, location, payment details, or browsing history. It contains no analytics, telemetry, tracking, or advertising, and does not track you across websites.
chrome.storage.local mechanism. They are not transmitted to us and we have no access to them.The Extension shares data with one third party, and only when you use the AI features:
We do not sell your data, share it for advertising, or transmit it to any other third party. No data is sent to us (the developer) or to humwhistle.com.
Information we handle falls into two categories: "voluntarily provided" and "collected during use."
Voluntarily provided information is anything you knowingly and actively provide, such as:
Collected during use refers to the page content read on the active tab when you choose to run a scan, as described in Section 1.
The Extension does not automatically collect device information, usage statistics, or analytics.
We protect information within commercially acceptable means to prevent loss, theft, and unauthorised access, disclosure, copying, use, or modification. Your API key is held in your browser's local extension storage and is not transmitted to us. All requests to the Anthropic API are made over encrypted HTTPS connections.
No method of electronic transmission or storage is 100% secure, and we cannot guarantee absolute data security. You are responsible for keeping your own API key confidential and for the security of any device on which the Extension is installed.
Because the Extension stores data locally on your device, retention is under your control: scan history auto-expires after 7 days, and your API key remains stored locally until you remove it or uninstall the Extension. We, as the developer, retain nothing from your use of the Extension.
If you contact us by email, we may retain that correspondence for the duration of your enquiry and for our records, after which we delete it or make it anonymous, unless we are required to retain it for a legal, accounting, or reporting obligation.
The Extension is a professional SEO tool. We do not aim it at children under the age of 13 and do not knowingly collect personal information about children under 13.
We may disclose information to:
We do not disclose information to advertisers, credit-reporting agencies, or data brokers, and we do not sell personal information.
We, the developer, are based in the United Kingdom and operate no servers; data handled by the Extension is stored locally on your own device.
When you use the AI features, page content is transmitted to Anthropic, which processes it in the United States and other locations where it or its providers operate. Where personal information is transferred internationally in this way, we rely on appropriate safeguards as required by the UK GDPR (Article 45/46) and the Data Protection Act 2018, such as standard contractual clauses. Anthropic's handling of that data is governed by its own privacy policy (https://privacy.claude.com/en/).
Your choice: You do not have to provide information to us; however, if you do not provide an API key, the AI features of the Extension will not function.
Access, correction, and other rights: Because we hold no personal information about you on our own systems, in most cases there is no stored personal data for us to access, correct, or erase. Where we do hold correspondence you have sent us, the rights below apply.
Non-discrimination: We will not discriminate against you for exercising any of your rights.
If we are acquired, or in the unlikely event we cease trading, data we hold (which, for the Extension, is minimal and stored on your device rather than ours) may be among assets transferred. Any acquiring party may continue to use information in accordance with this policy.
The Extension analyses pages and may reference external sites we do not operate; we are not responsible for their content or privacy practices. We may update this policy to reflect changes to the Extension or to legal requirements, and will post any changes at this same URL with an updated "Last updated" date.
We, A Latty, trading as humwhistle (United Kingdom), are the Data Controller with respect to any personal information you provide to us directly (for example, by email).
Our lawful bases depend on how you use the Extension and include:
We do not send marketing communications and do not market to anyone under 18.
Subject to the limits of UK data protection law, you have the right to be informed; the right of access; the right to rectification; the right to erasure; the right to restrict processing; the right to object; and the right to data portability. As noted in Section 8, because we hold almost no personal information about Extension users on our own systems, these rights will in practice apply mainly to any correspondence you send us. The statutory deadline for a Data Subject Access Request is 30 calendar days.
You have the right to lodge a complaint with the Information Commissioner's Office (ICO), the UK supervisory authority. We would appreciate the chance to address your concern first (see Contact below).
Information Commissioner's Office, Wycliffe House, Water Lane, Wilmslow, Cheshire, SK9 5AF — Tel: 0303 123 1113 — www.ico.org.uk
For any questions or concerns about this privacy policy or how the Extension handles data:
A Latty — humwhistle
Email: dev@humwhistle.com