Privacy at numbo.io
One page covering every third party touched by numbo.io. The calculators and converters compute entirely in your browser — what you type stays on your device. The AI-powered tools (Word Unscrambler definitions, Text Summarizer, daily quote) send your input to OpenAI via a Cloudflare Worker. Analytics is anonymous Google Analytics 4 with truncated IP. We don't collect emails, don't ask you to sign up, and don't sell anything.
What we don't do
- No accounts. No signup, no email collection, no email-gated content.
- No popups. No exit-intent modals, no newsletter prompts, no "are you sure you want to leave?" interstitials.
- No selling data. We don't sell or share any personal data, because we don't collect any.
- No reading what you type. Calculator inputs (mortgage amounts, BMI, etc.) compute in your browser. We never see them.
Where data flows for AI-powered tools
Three places on the site use a large language model: Word Unscrambler definitions (the popover when you click a result word), the Text Summarizer, and the homepage quote of the day. Each sends its input — the word you clicked, the text you pasted, or just today's date — through a Cloudflare Worker we control to OpenAI's API (model gpt-5.4-mini). OpenAI processes the input and returns a response.
We don't log inputs. Responses are cached at Cloudflare's edge for 30 days, keyed by a SHA-256 hash of the input, so identical queries don't re-hit OpenAI and don't cost us money. The cache is purgeable on request.
Don't paste sensitive or confidential content into the Text Summarizer — the same advice applies to ChatGPT, Claude, Gemini, or any other free LLM tool.
Third-party processors
- OpenAI (San Francisco, USA)
- Receives the inputs you submit to the AI-powered tools (Word Unscrambler definitions, Text Summarizer, quote of the day). OpenAI Privacy Policy.
- Cloudflare (San Francisco, USA)
- Hosts the site on Cloudflare Pages, fronts it as a CDN, runs the API Worker, and edge-caches LLM responses. Cloudflare Privacy Policy.
- Google Analytics 4
- Anonymous page-view stats, IP truncated. Google Privacy Policy.
- Google AdSense
- Displays side-rail ads, sets personalization cookies. Opt out of ad personalization.
- Frankfurter / European Central Bank
- Public exchange-rate feed used by the Currency Converter. No user data sent.
What we store on your device
- localStorage / numbo-theme
- Your theme preference (light, dark, or auto).
- localStorage / numbo-base-prefs-v1
- Base Converter format toggles (uppercase hex, grouping, bit width, signed mode).
- localStorage / numbo-ccy-rates-v1
- Cached currency rates with a 24-hour TTL — reduces calls to the Frankfurter API.
- Third-party cookies
- Google Analytics sets
_gaand_ga_TNW7RLJM4Q. Google AdSense sets personalization cookies, which you can opt out of via Google's Ad Settings. We don't set any first-party cookies of our own.
Your choices
- Block third-party cookies in your browser to disable Google Analytics and AdSense tracking. Most browsers have a one-click toggle for this.
- Use private / incognito mode for fully ephemeral sessions — nothing persists.
- Email [email protected] with any privacy concern or data-deletion request. We can purge the Cloudflare edge cache for specific LLM inputs if needed.
Effective from 2026-05-16. Material changes will be announced in the site's Atom feed.