Your daily tool box, one tab away.
DTB replaces your new tab with the tools you reach for all day — Base64, JSON, JWT, hashes, timestamps and your recently closed tabs — plus Google AI / Bing search, a clock and your IP. Everything runs locally in your browser.
Six tools, zero tabs opened
Each tool opens in a dialog right on your new tab. No uploads, no round-trips — the work happens in your browser.
Recent Tabs
Search your recently closed tabs and reopen any of them in a click.
Base64
Encode and decode text, UTF-8 safe, with a URL-safe mode and live output.
JSON
Format, minify and validate — invalid JSON is pinned to the exact line and column.
JWT
Decode header and payload, read claims as dates, verify HS256/384/512 signatures.
Hash
MD5, SHA-1, SHA-256 and SHA-512 digests, computed as you type.
Timestamp
Live Unix time plus two-way conversion between epoch and human dates.
Plus a Google AI Mode / Bing search box, a live clock and your public IP — and DTB is a tool factory, so more tools keep arriving.
Real tools, real output
Click a card and the tool opens in a dialog — encode, hash, decode and convert without leaving the tab.
Built to stay out of your way
Private & offline
Every tool runs locally. Your text, tokens and secrets never leave your browser.
Instant
No page loads, no ads, no sign-in. Open a tab and it's already there.
Theme-aware
Matches your system light or dark mode automatically.
Extensible
Built as a tool factory — new tools drop in cleanly over time.
Up and running in a minute
Add it to your browser
Install from the Chrome Web Store, Microsoft Edge Add-ons or Firefox Add-ons.
Open a new tab
DTB takes over the new tab page with the tool grid, search box and clock.
Start building
Click any tool card to work in a dialog, or search the web straight from the top.
Tell us what to build next
Enjoying DTB? A rating on the Chrome, Edge or Firefox store helps other developers find it.
Have an idea for a tool? Your feedback shapes what lands in the box.
