# Robots Radar

> Live robots.txt analyser. Instantly see if Googlebot, Bingbot or CCBot can crawl the current page — animated colour-coded icon in your address bar on every navigation. No clicking needed.

Canonical page: [https://chrome-stats.com/d/robots-radar](https://chrome-stats.com/d/robots-radar)

## Overview

- **ID:** `robots-radar`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** René Dhemant
- **Category:** web-development
- **Daily users:** 10
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 4.6.3
- **Last updated:** 2026-05-17
- **First published:** 2026-05-04
- **Size:** 85 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/robots-radar/)
- **Website:** [https://dhemant.consulting/tools/robots-radar-browser-extension](https://dhemant.consulting/tools/robots-radar-browser-extension)

## Description

<strong>Robots Radar</strong> analyses your site's <code>/robots.txt</code> in real time and shows a colour-coded icon directly <strong>inside your address bar</strong> — no toolbar button, no clicking, instant feedback on every page load.

What the icon means
<ul><li>🟢 <strong>Green ✓</strong> — the current path is allowed for crawling</li><li>🔴 <strong>Red ✗</strong> — the current path is disallowed</li><li>🟢 <strong>Teal ✓</strong> — no robots.txt found, all paths open</li><li>📡 <strong>Animated radar sweep</strong> — shown while fetching (looks great)</li><li>⚫ <strong>Grey ?</strong> — robots.txt could not be fetched</li></ul>
Specification-compliant parsing

Robots Radar implements Google's exact robots.txt specification (RFC 9309):
<ul><li>Longest path specificity — more specific rules win</li><li>Allow beats Disallow on equal path length</li><li>Multiple groups for the same agent are merged</li><li>Agent normalisation: <code>Googlebot/2.1</code> and <code>googlebot*</code> both match correctly</li><li>Relaxed blank-line handling (matches Googlebot's documented behaviour)</li><li>Correct wildcard matching: <code>*</code> and <code>$</code> anchors</li></ul>
Bot priority order

Rules are evaluated in this order, falling back to the next if no explicit group is found:

<code>Googlebot → Bingbot → CCBot → Google-Extended → * wildcard</code>

Features
<ul><li>Animated radar sweep icon during every page scan</li><li>Dark mode and Light mode with a one-click toggle — preference remembered</li><li>Per-domain caching (1 hour TTL) — no redundant fetches on the same domain</li><li>Works in private / incognito windows</li><li>Click the address bar icon for a full breakdown:<ul><li>Which bot group was matched (explicit vs wildcard fallback)</li><li>The single winning rule with type badge (Allow / Disallow)</li><li>Specificity bar showing how precise the match was</li><li>Syntax-highlighted robots.txt source viewer</li></ul></li><li>Refresh button to bust the cache and re-fetch live</li></ul>
Who is this for?

SEO professionals, web developers, site owners, and anyone curious about how search engines see their pages. Robots Radar turns robots.txt from a text file you forget to check into a live dashboard that follows you as you browse.

Privacy

Robots Radar only contacts the domain you are currently visiting, solely to fetch its public <code>/robots.txt</code> file. No data is collected, stored remotely, or shared with anyone. There are no analytics, no tracking, no third-party requests of any kind.

Open source

The full source code is available on GitHub. All code is plain, readable JavaScript — no bundlers, no minification, no obfuscation.

## Rankings

- #33,015 — Overall
- #17 — radar
- #183 — bot

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `webNavigation`
- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/robots-radar)