Overview
This site is a collection of small developer tools. The tools run in your browser whenever possible, and we keep the data we collect to the bare minimum.
What is stored in your browser
Your language, theme and tool preferences are kept in localStorage on your device. They never leave your browser.
Arttron DevTools browser extension
The Arttron DevTools browser extension for Chrome and Firefox puts the same developer tools in your browser toolbar. This section explains what it processes and what leaves your device.
Local tools
The JWT, Base64, URL, UUID, hash, color, cron and regex tools run entirely from files packaged inside the extension. Their input is processed on your device and is never transmitted. The extension keeps no history of your input, runs no analytics, and loads no remote code; its pages only allow scripts from the extension package.
Permissions
The extension requests contextMenus (to add the selection actions to the right-click menu), storage (to pass a selection to the tools popup and to remember your language, theme and API key) and activeTab (to read the current tab's address only after you invoke the extension). There are no content scripts and no required host permissions; access to arttron.dev is optional and requested only when you use a network tool.
Optional network tools
The DNS, TLS certificate, IP geolocation and HTTP check tools run only when you click them. They send the inspected hostname, resolved IP address or origin-root URL to arttron.dev over HTTPS, together with your own API key in the Authorization header. No page content, cookies or credentials are sent. The API key is stored locally in your browser's extension storage.
Server-side processing
Network-tool requests reach our API, where they are subject to our normal logging and rate limits. Results may be cached on the server, keyed only by the inspected target and never by user or key, for at most: DNS and TLS results 5 minutes, IP geolocation 24 hours, HTTP checks 30 seconds. The plaintext API key is not stored by the server; only a hash of it is kept.
We do not sell your data or share it with advertisers.
Analytics
Google Analytics (GA4) is loaded only if you explicitly accept it. Until then no analytics script runs and no request is sent to Google. If you decline, the choice is remembered and analytics stays switched off.
Your choice
You can change your decision at any time. Declining switches analytics off for this browser.
Contact
Questions about this policy? Open an issue on GitHub.
Send a message on the support page