Absolute Zero Toolbox

Inspect, test and debug web apps from Chrome's side panel, with an encrypted local vault for your development credentials.

Absolute Zero Toolbox is a workbench for people who build and test web applications. Instead of scattering your workflow across anonymous online utilities that you paste production data into, everything runs locally in one panel beside the page you are working on. Open it from the toolbar icon. UNDERSTAND WHAT AN APPLICATION IS DOING Format and explore a JSON payload, then compare two versions to see exactly what changed. Decode a token to check its claims and expiry before you trust it. Review response headers, and edit the cookies or stored values behind the tab you are debugging. TEST THE ENDPOINTS YOU CONTROL Build and send requests, keep them organised per project, and import work you already have rather than retyping it. Replay and modify traffic on a tab you explicitly attach to. Check how a service answers an unexpected origin, or how it behaves when several identical requests arrive at once. Capture inbound callbacks while you wire up an integration, and audit your own sites for credentials that were committed by mistake. FILL IN THE GAPS WHILE YOU WORK Generate realistic sample records, fill a signup form straight from the right-click menu, and get a throwaway inbox when a flow needs a fresh address. Encode or hash a string, work through a regular expression against live matches, translate timestamps, and read a cron schedule in plain English. Look up a DNS record, a certificate, or a status code without opening another tab. AN ENCRYPTED VAULT FOR DEVELOPMENT CREDENTIALS Building software means juggling logins for staging and test accounts. The vault keeps your two-factor codes and reusable snippets encrypted on your own device using AES-256-GCM, with the key derived from a master password. You choose that password on first run. It never leaves your machine, there is no account, and there is no recovery, so keep it somewhere safe. Auto-lock, an optional quick PIN, a clipboard timer, and encrypted export are all included. PRIVACY There is no account and no server behind this extension. Nothing is uploaded to the developer, because there is nowhere to upload it to. The network is used only when you run something that needs it, and then only to the destination you named. No analytics, no tracking, no advertising. Optional page hints are switched off by default. When enabled, they check the current page locally and show a small notice for things worth knowing, such as a sandbox payment key or a staging hostname. Nothing is transmitted. Full privacy policy: https://www.its-tahir.com/absolute-zero/privacy RESPONSIBLE USE The traffic interceptor and the site audit are intended for sites you own or have explicit permission to test. Please use them accordingly. Some of the more advanced network features are marked Beta — fully usable, still improving. Feedback is welcome. Made by Tahir Nazir — its-tahir.com — hello@its-tahir.com