SAML Message Decoder

Name: SAML Message Decoder
Rating: 3.3846 (13 reviews)
Author: Magnus Suther

This tool helps you debug your SAML based SSO/SLO implementations. It runs in the background, collecting SAML messages as they are sent and received by the browser.

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Features & Capabilities

SAML Message Decoder is a Chrome extension designed to assist developers and IT professionals in debugging SAML-based Single Sign-On (SSO) and Single Logout (SLO) implementations. It operates silently in the background, capturing all SAML messages sent and received by your browser.

When an SSO or SLO process doesn't behave as expected, you can simply open the extension to view the latest SAML messages displayed in human-readable XML format. This clear and accessible view of authentication messages allows you to quickly diagnose and resolve complex authorization issues encountered during the SAML authentication process, improving your implementation workflow and reducing downtime.

User Growth & Download Statistics

Add-on Developer Tools Privacy & Security

By:

Daily users:

Rating:

Version:

2.1.2resigned1 Last updated: 2024-04-25

Version code:

5728436

Creation date:

2017-08-07

Risk:

Permissions:

Size:

463.07KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 3,335 ▼ 7

Other rankings

#2 in message keyword 30

#3 in messages keyword 25

#16 in receive keyword 37

#35 in usage keyword 38

#42 in qr code keyword 59 ▲ 2

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Other platforms

SAML Message Decoder (v2.1.1)

30,000 4.39

(31)

For Developers

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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:

Magnus Suther

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/saml-message-decoder-extension/

Website:

https://github.com/magnussuther/saml-message-decoder-extension

User Reviews

The SAML Message Decoder add-on is praised for its utility in handling complex SAML configurations and has improved functionality in recent Firefox versions. However, multiple users report that it does not work in private browsing mode, fails to capture SAML messages reliably, and sometimes shows blank dialog boxes. Issues with Firefox containers and lack of updates by the developer further impact usability, making it less dependable for thorough SAML testing.

Pros

Works well for problematic SAML configurations.
Updated versions function correctly in Firefox Quantum.
Helpful and essential tool for job-related SAML testing and debugging.

Cons

Does not work in private browsing mode where users often need it.
Fails to capture SAML messages consistently across multiple service providers.
Some users experience blank dialog boxes and inability to view SAML tokens.
Incompatibility issues with Firefox containers.
Lack of timely fixes or responses from the author for reported problems.

Recent reviews

by 敬念*****, 2025-03-30

by 远离*****, 2025-02-17

This addon is awesome for working on problematic SAML configs.

by Sa*****, 2024-02-27

View all user reviews ›

Is SAML Message Decoder 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.

SAML Message Decoder 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.
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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.

SAML Message Decoder has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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