Redirect Inspector — Link & Redirect Checker Firefox

Redirect Inspector — Link & Redirect Checker

By: 301.st Add-on
Free redirect checker and tracer. Follow 301/302 chains in real time, check any URL without visiting it, expand short links, detect loops with 9 local checks, export JSON or cURL, filter tracking noise. Private: zero network requests by default.
xHeader
Modify request and response headers. No ads, no malware.

Features & Capabilities

See where every link really goes.

Redirect Inspector shows every HTTP redirect chain in real time — 301, 302, 303, 307, 308, HSTS upgrades, meta-refresh and JavaScript redirects — straight from the webRequest API. Check any URL without opening it, expand shortened links, audit redirect chains for SEO, and catch loops, ping-pong hops and broken destinations before your visitors do.

Why Redirect Inspector

  • Live capture — every redirect is recorded as you browse, no manual trigger
  • Check any URL — paste it into the bottom dock and get the full chain without visiting the page
  • Readable chains — status codes, hop count and total duration; same-host hops show what changed (http → https, trailing slash)
  • Short link expander — see the real target of shortened or masked links
  • Search & noise filter — filter chains by URL; tracking pixels and media requests hidden by default
  • Powerful export — summary, full report, raw JSON download, or a ready cURL command
  • Undo-able Clear, keyboard shortcuts, built-in help
  • Dark & light themes, fully translated into 7 languages
Built-in redirect analysis — 9 local checks

Loops and ping-pong patterns, long chains, mixed 301/302 types, 4xx/5xx dead ends, OAuth/login bounces, locale/consent hops, tracking noise, CDN intermediaries (Cloudflare, CloudFront, Akamai, Fastly). Every issue gets a severity level, per-hop annotations with timings, and a copyable report.

Who it's for

SEO specialists auditing redirect chains and canonicalization; developers debugging navigation and client-side redirects (JSON and cURL export included); QA engineers verifying landing and login flows; affiliate managers checking cloaked links; anyone who wants to know where a link goes before clicking through.

Private by design

Everything runs locally. No accounts, no analytics, no telemetry, zero network requests by default. The manual URL check is an ordinary browser navigation in a background tab that closes itself. Optional 301.sh news notifications are strictly opt-in and only fetch the public article feed.

Open source: https://github.com/investblog/redirect-inspector Crafted at 301.st — Smart Traffic.

User Growth & Download Statistics

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
301.st
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/redirect-inspector/
Email:
su*****@301.st
Website:
https://301.st

Permission Change History

2026-07-27: Version 2.1.1 → 2.3.0
Add Permissions: alarms
Remove Permissions: tabs
Add Optional permissions: notifications

Is Redirect Inspector — Link & Redirect Checker Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Redirect Inspector — Link & Redirect Checker requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
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Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Redirect Inspector — Link & Redirect Checker may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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