Privacy Policy

The short version

The text, files, and data you enter into any SparkJSON tool (JSON you format, a JWT you decode, a password you generate, and so on) is processed entirely in your browser using standard JavaScript and Web APIs. It is never transmitted to, or stored on, any server we operate — because SparkJSON does not have a backend server that tool input passes through. There is nothing to intercept because there is no request to intercept in the first place. You can verify this yourself by opening your browser's developer tools, selecting the Network tab, and using any tool with real data.

What we do collect: standard hosting logs

SparkJSON is hosted on Cloudflare Pages. Like virtually every website on the internet, the hosting infrastructure that serves these pages to your browser generates standard web server logs as a normal part of delivering content — this typically includes your IP address, browser user-agent string, requested URL, and timestamp for each page load. This is infrastructure-level logging performed by our hosting provider to operate the network reliably and defend against abuse; it is not something we query, export, or use to build a profile of individual visitors, and it does not include anything you type into a tool, since that never becomes part of an HTTP request in the first place.

Cookies and local storage

SparkJSON itself sets exactly one piece of local storage: your dark/light theme preference, stored in your browser's localStorage under a single key. It never leaves your device and isn't readable by any other website. We do not set analytics or tracking cookies of our own.

Advertising

This site displays advertising served through Google AdSense in clearly reserved, fixed-size ad slots. If and when an ad is shown, Google and its advertising partners may set cookies or use similar technologies to serve ads based on your prior visits to this and other websites, and to measure ad performance. We don't control this data collection directly — it's governed by Google's own policies. You can learn more about how Google uses data from sites that use its services, and adjust your ad personalization settings, at policies.google.com/technologies/partner-sites. If you're in the EU/UK/EEA, ad personalization consent (where required) is presented through the ad platform's standard consent mechanism.

Third parties

Other than the AdSense advertising described above and the font files loaded from Google Fonts at build time (not at runtime — they are bundled with the site, not fetched from Google's servers on each visit), SparkJSON does not load third-party scripts, trackers, or analytics.

Children's privacy

SparkJSON is a set of general-purpose developer utilities not directed at children, and we do not knowingly collect personal information from anyone, including children under 13.

Changes to this policy

If this policy changes — for example, if we ever add an optional, clearly-disclosed analytics tool — we'll update the "last updated" date above and describe the change here.

Contact

Questions about this policy can be sent to hello@sparkjson.com. See also our Terms of Service.