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01Chrome extension · Manifest V3 · Free

One side panel.81 tools.Zero tab-hopping.

JSON, an API client, screenshots, colour, SEO, QA, privacy and more, in one fast Chrome side panel. Local-first, with no account and no tracking.

Add to Chrome — free(opens the Chrome Web Store in a new tab)Explore 81 tools

Summon it anywhere:CtrlShiftSpace

Scroll to open the panel
Clipboard01Text09Developer07QA06API & HTTP02Web10Data Conversion02Design09Security06Privacy02Site Enhancements05
Calculators03Date & Time01Screenshots02Image03Files01Generators01SEO01Productivity04Browser04Storage01Accessibility01

02See it work

Open the panel.
Pick a tool. Done.

  1. 01JSON Toolkit

    Format a payload

  2. 02Color Picker

    Sample any pixel

  3. 03Capture Toolkit

    Capture & annotate

  4. 04API Request Builder

    Fire a request

  5. 05Ad Blocker

    Silence the noise

03By the numbers

A whole toolbelt that weighs nothing.

Every tool loads on demand, so the side panel opens instantly and the browser stays quick. One install replaces dozens of single-purpose extensions and the bookmarks you keep for one-off web tools.

Tools in one panel
81Consolidated toolkits, not a wall of icons.
Categories
22Developer, QA, design, privacy, productivity…
Trackers or analytics
0No account. No remote code. No telemetry.
Local processing
100%Hashing, JWT, images and notes stay on-device.

04The tool belt

22 categories. 81 tools.

05The platform

Not a pile of tools. One fast, keyboard-first workspace.

Search, shortcuts, context menus and DevTools all lead to the same toolkits, so you can reach the tool you need from wherever you are.

  1. 01 / 05

    A command palette for your whole browser

    Hit the shortcut on any page, type a few letters, and jump straight to a tool or one of its tabs.

    • Fuzzy search over names, aliases and keywords
    • Deep links into a specific tab
    • Favourites and recents on the home screen
  2. 02 / 05

    Smart paste knows what you copied

    The home screen reads your clipboard when you ask, recognises JSON, JWTs, URLs, colours, timestamps, XML, YAML and Base64, and suggests the right tool.

    • Detection runs locally
    • Nothing is read until you click
    • One click to the matching tool
  3. 03 / 05

    Right-click anything, send it to a tool

    Selections, links, images and pages get a One Panel submenu. The payload opens in the right tool, already filled in.

    • Selection, link, image and page menus
    • Opens the side panel pre-filled
    • Save images as JPG, PNG, WebP, GIF or PDF
  4. 04 / 05

    Lives inside DevTools, too

    Page-aware tools show up as DevTools panels: themed React DevTools, an HTTP interceptor with mocks and redirects, element and storage inspectors.

    • React Components, Profiler and Suspense
    • Mock, redirect and rewrite requests
    • Inspect localStorage and sessionStorage
  5. 05 / 05

    Yours, down to the accent colour

    Light, dark or system. Six accent palettes, compact or comfortable density, and keyboard shortcuts you can rebind in Chrome.

    • Light, dark and system themes
    • Six palettes, two densities
    • Shortcuts for capture, palette and PiP

06Scrub the workflow

Copy it. Paste it. Decode it. Ship it.

Drag the playhead to step through a real flow: a JWT copied from a response is recognised, decoded and checked for expiry. No tabs, no pasting into a random website.

  1. 01 Copy a token
  2. 02 Smart paste detects it
  3. 03 Decode in place
  4. 04 Copy the claims

07Privacy by architecture

Your data stays in your browser

Your data stays in your browser. No account, no analytics, no remote code. Just tools that run where you already work.

Stored on this device

Settings, favourites, notes, clipboard and API history live in chrome.storage.local. Nothing syncs to a server.

Page tools on demand

Inspectors and pickers inject their helper into a tab only when you start them. Blocking and protection rules ship inside the package.

No telemetry, no remote code

No analytics, no account and no scripts downloaded at runtime. Network calls happen only when a tool you use needs one, like an API request you send.

Every permission is explained, line by line, on the permissions page.

08Highlights

The tools people open every day.

See the full catalogue
Developer

JSON Toolkit

Validate, format, explore and convert JSON.

API & HTTP

API Request Builder

A Postman-style API client inside your side panel.

Screenshots

Capture Toolkit

Capture and annotate without leaving the tab.

Privacy

Ad Blocker

Fast MV3 ad and tracker blocking, YouTube included.

API & HTTP

HTTP Interceptor

Rewrite, redirect and mock live traffic.

Design

Color Picker

Pick any colour on screen.

SEO

SEO Toolkit

A full on-page SEO audit in your side panel.

Data Conversion

Data Scraper

Turn tables and lists on any page into a spreadsheet.

09Install

Your browser, fully loaded.

81 tools in one side panel. Free to install, no account, and no tracking.

Add One Panel to ChromeAdd to Chrome(opens the Chrome Web Store in a new tab)

Then pressCtrlShiftSpaceanywhere.

10Questions

Good to know.

A Chrome extension that puts 81 everyday tools for developers, designers, QA and SEO in one side panel, right next to the page you are working on. Formatters, an API client, screenshots, colour tools, audits, privacy controls and more.

There is no analytics, no account and no remote code. Settings, favourites and history live in chrome.storage.local on your device. Network calls happen only when a tool you use needs one, such as an API request you send or an opt-in YouTube add-on. Read the privacy overview.

Each permission backs a shipped feature: the side panel, clipboard tools, right-click menus, screen capture, ad blocking and web protection. Every one is explained on the permissions page, and the most invasive ones (like the debugger) are optional and requested only when you turn them on.

Each tool is a separate chunk that loads only when you open it. Page helpers are injected into a tab on demand, and blocking runs on Chrome's built-in declarativeNetRequest engine instead of a script on every request.

Click the toolbar icon to open the side panel, press Ctrl+Shift+Space for the command palette, right-click any selection, link or image, or use the panels inside Chrome DevTools. You can also pin favourites to the home screen.

It is built for Chrome on Manifest V3 and relies on the side panel API. Other Chromium browsers that support side panels should work too, but Chrome is the one we test against.