List Tools

Tracking since Apr 1, 2026.

Changelog

• Apr 19, 2026
  description

  List Tools - H3 Geographic Grid Index Toolset
  
  Purpose
  List Tools is a Chrome extension that lets you compute and analyze H3 geographic grid indices quickly. It can convert coordinates to H3 indices and return detailed metrics. It is a growing toolkit for geospatial work.
  
  Why this is a platform, not just a single tool:
  - Use the existing H3 grid index calculator
  - Add your own external tools via custom links
  - More tools will be added over time
  
  Why Install It
  1. It’s a tool platform
  Today: H3 grid calculator, custom link management, export
  Coming: additional geospatial, data, and professional tools
  Add your own links for quick access
  2. Current: H3 grid calculator
  A complete H3 index calculator with core mapping and analysis functions.
  
  Target Users
  GIS developers
  - Convert and verify coordinates/H3 indices
  - Test resolutions and properties
  - Export vertices for rendering
  
  Map app developers
  - Validate and debug indices
  - Prototype visualizations and APIs
  
  Privacy and data
  - Local processing in the browser
  - No server data transmission
  - Local tool storage
  - No analytics or tracking
  - Works offline
  
  Permission rationale
  - tabs: Opens custom tool links when users click added tools. Enables direct access without reading or modifying tab content.

  List Tools - H3 Geographic Grid Index Toolset
  
  This extension uses the storage permission to save user preferences and custom tools locally. Specifically, it stores input history for quick recall, custom tool configurations, and theme settings (light/dark/auto) using chrome.storage.sync. This data is used solely within the extension and never sent to any external server.
  
  Purpose
  List Tools is a Chrome extension that lets you compute and analyze H3 geographic grid indices quickly. It can convert coordinates to H3 indices and return detailed metrics. It is a growing toolkit for geospatial work.
  
  Why this is a platform, not just a single tool:
  - Use the existing H3 grid index calculator
  - Add your own external tools via custom links
  - More tools will be added over time
  
  Why Install It
  1. It’s a tool platform
  Today: H3 grid calculator, custom link management, export
  Coming: additional geospatial, data, and professional tools
  Add your own links for quick access
  2. Current: H3 grid calculator
  A complete H3 index calculator with core mapping and analysis functions.
  
  Target Users
  GIS developers
  - Convert and verify coordinates/H3 indices
  - Test resolutions and properties
  - Export vertices for rendering
  
  Map app developers
  - Validate and debug indices
  - Prototype visualizations and APIs
  
  Privacy and data
  - Local processing in the browser
  - No server data transmission
  - Local tool storage
  - No analytics or tracking
  - Works offline
  
  Permission rationale
  - tabs: Opens custom tool links when users click added tools. Enables direct access without reading or modifying tab content.

• Apr 19, 2026
  permissions

  tabs

  tabs, storage

Permissions & access

Permissions

tabsstorage

Host access

None declared

Screenshots

Similar extensions

Alternatives to List Tools, ranked by description similarity.

Tool Hub

Find and save useful web tools in one place

111

ZTools - 300+ Utility Tools

Quick access to 300+ utility tools: text processors, encoders, generators, formatters, and more.

17

PineTools: Your ultimate online toolbox!

Hundreds of simple user-friendly tools for computational and creative needs: colors, images, text, lists, mathematics, files, etc.

147

9M2PJU Grid Locator Finder

Finds the Maidenhead Grid Locator based on the user's location or manual coordinates input.

10

SEO HUB

Check and evaluate your domain's backlinks. Enter your domain, backlink URLs, and get SEO insights instantly & export to CSV

37

★ 5.0

IO Tools Quick Access

Quickly access iotools.cloud for tools that boost your productivity and optimize workflows.

161

★ 5.0

Extension Grid

Display your browser extensions in a beautiful grid

—

★ 5.0

miniwebtool — Free Online Tools

Quick access to free online calculators, converters, and text tools in 15 languages. Search, browse, save favorites.

2.0K

★ 4.0