DevBox — Offline JWT Decoder, Base64 Encoder and Hash Toolkit

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

• Act on the current tab, but only after you click it activeTab
• Schedule work to run later alarms
• Put data on your clipboard clipboardWrite

The full permission history for this extension →

The publisher

zovooneofficial publishes 20 listings we track, 192 users between them.

1. Dyslexia Reading Overlay — Friendly Font, Color Tint and Reading Ruler zovooneofficial · Make Chrome Yours · Accessibility · published 2026-07-16 32 users ★ 5.0
2. Ghost Job & Stale Listing Flag zovooneofficial · Productivity · Tools · published 2026-07-26 30 users ★ 5.0
3. Night Editor Theme — Dark Mode for Docs zovooneofficial · Make Chrome Yours · Functionality · published 2026-07-23 24 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

1. DevBox — Base64, JWT, URL, Hash, JSON Describes nearly the same job, smaller audience 9 users (last published figure) ★ 5.0
2. JWT Decoder, Base64 & URL Encode/Decode, JSON Formatter, Hash Generator Describes nearly the same job, smaller audience 255 users ★ 5.0
3. DevTools Decoder Describes nearly the same job, smaller audience 21 users
4. Dev Toolkit Describes nearly the same job, smaller audience 28 users
5. Hash & Encode Tool Describes nearly the same job, smaller audience 5 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.