Merlin
Referer Modifier

Referer Modifier

Modify the Referer header of HTTP requests: Remove, shorten, replace with custom data, or keep the Referer depending on the target domain.

What is Referer Modifier?
Referer Modifier is an efficient Firefox add-on meant for managing the HTTP Referer header. This add-on allows users to set up rules for each target domain, deciding whether to keep, prune, remove or replace the Referer. Users can also designate default actions for domain-based requests and those that don't match any existing rule. It offers easy JSON configuration import/export, and since version 0.8, allows for modification of the Javascript property document.referrer to align with changes.
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Merlin
Stats
By: Airtower
Users: 878 ▲ 4
Rating: 3.94 (31)
Version: 1.1.0 (Last updated: 2022-11-09)
Creation date: 2017-11-03
Weekly download count: 25
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • webRequest
  • webRequestBlocking
  • <all_urls>
  • storage
Size: 44.62K
URLs: Website
Stats date:

Chrome-Stats Rank

# 3415 ▼ 16
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Not available on Chrome
Not available on Edge
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Merlin
Summary
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Referer Modifier lets you configure rules to decide what HTTP Referer header Firefox should send to a certain site, if any. For each target domain, one of five actions can be configured:

  • Keep: Do not modify the Referer
  • Prune: Send only the origin part of the Referer (scheme, host, and port)
  • Target: Send the origin of the target URL (scheme, host, and port) as Referer
  • Remove: Send no Referer at all
  • Replace: Replace the Referer with a configured value
You can configure default actions for requests originating from the same domain, and any other request not matching a domain rule. The "replace" and "target" actions will create a Referer header if necessary, the others only modify or remove existing ones. The configuration can be exported as and imported from JSON files.

Since version 0.8 the Javascript property document.referrer is modified to match.

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Allows user to control the referer header effectively.
  • Helpful in circumventing access restrictions and 403 Forbidden errors on websites.
  • Works alongside other add-ons like CORS Anywhere to enhance browser control.
Cons
  • Lacks a user interface for easy configuration with no settings panel.
  • Cannot hide referer from a specific website, only to (target) websites.
  • Some users report that it doesn't work or has stopped working after browser updates.
Most mentioned
  • Useful in resolving 403 Forbidden errors by manipulating the referer header.
  • Some users find the add-on unpolished or lacking necessary options (e.g., 'Forge' option).
  • Occasional compatibility issues, including following browser updates.
Recent reviews
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by _inccc., 2024-01-17
View all user reviews
Safety
Risk impact

Referer Modifier is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Referer Modifier if you trust the publisher.

Risk likelihood

Referer Modifier has earned a fairly good reputation and likely can be trusted.

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