IPvFoo

Name: IPvFoo
Rating: 4.84020618556701 (194 reviews)
Author: https://pmarks.net/

Display the server IP address, with a realtime summary of IPv4, IPv6, and HTTPS information across all page elements.

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IPvFoo is a free Chrome extension designed to provide users with real-time insights into the network protocols behind web pages. Installed as a toolbar icon, it clearly indicates whether a web page was fetched using IPv4 or IPv6 by showing a prominent red '4' or green '6'. For pages connecting to multiple domains, smaller indicators display the connection type for each. Clicking the icon opens a detailed table listing all hostnames involved, allowing easy viewing, copying, and quick lookups via bgp.he.net.

Dedicated to raising awareness about the global transition from IPv4 to IPv6, IPvFoo values user privacy by storing data only in RAM and never modifying the network. Licensed under Apache 2.0 and ad-free, it delivers valuable network protocol information without compromising performance or user experience.

Extension Developer Tools Privacy & Security Utilities Education

By:

Users:

Rating:

Version:

2.24 Last updated: 2025-06-16

Creation date:

2018-09-06

Risk:

Permissions:

contextMenus
storage
webNavigation
webRequest
offscreen

Host permissions:

<all_urls>

Size:

47.71KB

Email:

pa*****@pmarks.net

URLs:

Website ,Privacy policy

Full description:

Source:

Chrome Web Store

Data ingested on:

2025-07-15

Ranking

# 1,741 ▲ 9

Other rankings

#12 in Functionality & UI #110 in address keyword 16 ▼ 5 #220 in icon keyword 17 ▼ 19 #284 in network keyword 23 ▼ 4

Other platforms

IPvFoo (v2.24)

6,382 4.76

(38)

User reviews

IPvFoo is widely appreciated for its reliability and usefulness in network troubleshooting, especially for distinguishing IPv4 and IPv6 traffic and identifying domains used by websites. Many network professionals and developers find it an indispensable tool. However, multiple users report issues with compatibility and functionality on certain OS and browser versions, causing the icon not to display correctly or inconsistent results. Despite some issues, it remains a valuable, effective extension for those needing detailed IP information and network diagnostics.

Pros

Extremely helpful for troubleshooting network connection issues and identifying IP versions (IPv4/IPv6).
Accurately displays IP information and additional details like active WebSockets and URLs used by websites.
Valuable tool for network professionals, developers, and those working with firewalls or web performance testing.
Provides convenience and detailed insights which assist in debugging and network infrastructure tasks.
Reliable and has been effectively used by users for years across different platforms.

Cons

Some users report the extension stopped working or shows only a generic icon instead of IP version indicators, particularly on certain OS versions and Chrome updates (e.g., Chrome Dev on MacOS Catalina, Chrome 69).
Inconsistent behavior across different operating systems and browser versions causing varied results or malfunctioning.
One user reported that the extension doesn't show an icon in the address bar.
Occasional unexpected behavior in displaying results depending on platform or environment.

Recent reviews

this thing is a must have for troubleshooting connection issue, helped me more than I can count, I love it.

Di*****, 2025-06-25

Works as advertised and accurately with no hiccups. Even reveals to me that Google search prefetches the URLs

『C*****, 2025-04-27

Excelente ferramenta, muito prática para testes de performance e desenvolvimento.

Ma*****, 2025-04-12

View all user reviews ›

Extension safety

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.

IPvFoo 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 Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

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

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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