20 developer tools in your toolbar. JSON, JWT, Regex, Diff, QR, and more. 100% local, zero network requests.
Users
8
−1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#207K
#173K among extensions
Version
1.0.0
updated 24 Feb 2026
Users
monthly, 8 months
Latest, 16 Oct 2026:8 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 16 Oct 2026:4 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About GTools: Developer Swiss Army Knife
Stop pasting sensitive data into random websites.
GTools puts 20 essential developer tools directly in your
Chrome toolbar. Every tool runs 100% locally in your browser —
zero network requests, zero telemetry, zero data collection.
Your JWTs, JSON payloads, and API responses never leave your
machine.
TOOLS INCLUDED:
Payload Modeler — Paste JSON, get a Go struct or TypeScript
interface instantly
JSON Formatter — Prettify, minify, and validate JSON with
syntax highlighting
JWT Inspector — Decode JWT tokens, inspect header/payload,
check expiration
String Utils — Base64, URL encoding, HTML entities — encode
and decode
Regex Tester — Write patterns, test against input, see matches
highlighted live
Epoch Time — Convert between Unix timestamps and
human-readable dates
Hash Generator — SHA-1, SHA-256, SHA-384, SHA-512 using Web
Crypto API
Color Converter — HEX, RGB, HSL conversion with a visual color
picker
CSS Shadow — Visual box-shadow builder with live preview and
CSS output
Lorem Ipsum — Generate placeholder text by paragraphs,
sentences, or words
UUID Generator — Batch UUID v4 generation in standard,
uppercase, or bare format
Diff Viewer — Side-by-side text comparison with LCS-based diff
algorithm
Cron Parser — Explain cron expressions in plain English, see
next 5 run times
Number Base — Convert between binary, octal, decimal, and
hexadecimal
Markdown Preview — Live side-by-side markdown renderer with
full syntax support
QR Generator — Generate QR codes from text or URLs, download
as PNG
XML / SQL Formatter — Prettify and minify XML, HTML, and SQL
queries
JSON Path — Query JSON with JSONPath expressions, extract
nested data
Ticket-to-Git — Turn your current tab's title into a git
branch name in one click
State Surgeon — Nuke localStorage, sessionStorage, and cookies
for the active tab
PRIVACY FIRST:
- Only 2 Chrome permissions (activeTab + scripting), both
require your explicit action
- No background scripts, no content scripts
- No analytics, no tracking pixels, no ads
- No account required, no sign-up, no paywall
- Open source: https://github.com/venkatdhurjati/GTools
POP OUT TO FULL TAB:
Need more screen space? Click the expand button in the
top-right corner to open GTools in a full browser tab. No
extra permissions needed.
KEYBOARD SHORTCUTS:
/ — Focus the sidebar search
Escape — Clear search and return
Built by developers, for developers. MIT Licensed.
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For Category, select Developer Tools.
For Language, select English.