Privacy Policy
Last updated: August 2026
Your data stays in your browser
All tools on Developer Toolbox process data locally in your browser using JavaScript and native web APIs. When you format JSON, decode a JWT, generate a hash, or convert YAML, the data you enter is never transmitted to our servers. There is no upload step — the processing code runs on your machine.
No account required
Developer Toolbox does not require registration and does not collect names, email addresses, or profiles. There are no user accounts.
Local browser storage
We use your browser's local storage only for non-sensitive interface preferences: your theme choice, favorite tools, and recently used tools. We never persist tool inputs, secrets, tokens, passwords, or any data you process. You can clear these preferences at any time through your browser settings.
Affiliate links
The site is kept free by occasional sponsored banners for products we think developers will find useful, such as web hosting. If you click a sponsored link and make a purchase, we may earn a commission at no extra cost to you. These banners are first-party HTML on this site — they do not load third-party ad scripts and they do not set cookies. They never have access to the data you enter into the tools.
Analytics
We use Google Analytics to understand which tools are useful and how the site is performing — page views, not payloads. When enabled, Google Analytics collects usage information such as pages visited, approximate location, and device and browser details, and processes it as described in Google's Privacy Policy. Analytics never has access to the data you enter into the tools. Until you accept cookies in the cookie banner, analytics runs in cookieless mode (Google Consent Mode): it sets no cookies, does not identify you, and sends only anonymous, aggregated pings. Analytics cookies are set only after you accept.
Cookies and consent
The tools themselves do not use cookies, and neither do the sponsored banners. The only cookies on this site come from analytics, and none are set until you accept them in the cookie banner. If you reject non-essential cookies, analytics stays in anonymous cookieless mode and the site remains cookie-free. Your choice is stored in your browser's local storage, and you can change it at any time using the "Cookie Preferences" link in the footer.
A note on secrets
Even though our tools run locally, it is good practice to never enter production secrets, private keys, or sensitive credentials into any website you do not fully trust. For production workloads, prefer audited command-line tools and libraries running in your own environment.