When comparing Chromium vs Iridium Browser, the Slant community recommends Chromium for most people. In the question“What are the best desktop web browsers?” Chromium is ranked 11th while Iridium Browser is ranked 13th. The most important reason people chose Chromium is:
Chrome and Chromium are available on almost every device nowadays
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Cross-platform
Chrome and Chromium are available on almost every device nowadays
Pro Latest Blink
This is the browser Blink is made for and developed alongside.
Pro Sandboxing
Every tab and plugin runs in its own subprocess so they will never affect the whole browser ,however that consumes more memory than other browsers
Pro Completely Open Source
Both Chromium and and its rendering engine Blink are licensed under the BSD-license which includes no copyleft unlike the GNU or Mozilla Licenses.
Pro Access to Chrome's extensions
Chromium can access the Chrome Web Store and all the extensions hosted there can be installed and used on Chromium.

Pro Supports all of Google Chrome features
As Chrome is based on Chromium they overlap in supported features. Chromium syncs between devices, automatically updates, has great built-in developer tools, installs extensions without a restart, includes a combined text bar for entering URLs and searching and has excellent HTML5 compatibility just like Chrome.
Pro Bare
It does not have any extensions preinstalled and focuses to be a web browser.
Pro BSD license
You can do almost anything with the code.
Pro Gets constant updates
While the Chromium-based browser haev to adapt their code to the update before release, original Chromuim doesn't need it so it gets updated more constantly and frequently.
Pro Chromium sets the standard for Web Browsing
Since Google Chrome is the most used web browser, and that browser along with many others is based on Chromium, Chromium sets the standards for the internet and for security, and Firefox will always be years behind.
Pro Backed by Google
Chromium was first released as a large portion of Chrome's source code as an open source project by Google in september 2008. The idea was to encourage developers to review the underlying code and to contribute in making Chrome cross platform and port it to Mac and Linux as well.
Nowadays Chromium is a large project with a huge community that's standing behind it but still Google continues to take an extremely active role in Chromium development. This ensures the longevity and constant development and improvement of the browser.
Pro Does not come with Google
Unlike Chrome it does come wihout any Google account requirement.
Pro Privacy enhancements over Chromium
- Disable "Use a web service to help resolve navigation errors"
- Disable autocomplete through prediction service when typing in Omnibox
- Always send "Do-Not-Track" header
- Network/DNS prediction is disabled by default
- Block third-party cookies by default
- Link auditing (<a ping="...">) is disabled by default
- Fetch plugins list from iridiumbrowser.de where it will be updated regularly
- Site data (cookies, local storage, etc.) is only kept until exit, by default
- Passwords are not stored by default
- Input form autofill is disabled by default
- For IPv6 probes, use a DNS root server instead of Google
- The default search provider is Qwant
- Load "about:blank" on new tabs instead of the currently set search engine and/or promotions.
- Don't report Safe Browsing overrides.
- Don't use autofill download service.
- Disable cookies for safebrowsing background requests.
- Disable the battery status API.
Pro Lots of extensions available
Due to access to the Chrome Web store.
Pro Extensions are updated manually
They won't update automatically in the background.
Pro BSD license
You are in control and you can do almost anything with the code.
Pro Simple installation
Provides installers and packages for the most operating systems and linux distributions.
Pro Security improvements over Chromium
- Increase RSA keysize to 2048 bits for self-signed certificates (used by WebRTC)
- Generate a new WebRTC identity for each connection instead of reusing identities for 30 days
- Generate a new ECDHE keypair for each WebRTC connection instead of reusing them for multiple connections
- Disable using system-provided plugins (i.e. Java, Flash, etc.)
Pro Fast
It is fast since all background services have been disabled or removed.
Pro Disabled features
- Disable background mode
- Disable EV certificates, so they are shown just like "normal" certificates
- Disable Google cloud printing
- Disable Google hot word detection
- Disable Google experiments status check
- Disable Google translation service
- Disable Google promotion fetching
- Disable Google Cloud Messaging (GCM) status check
- Disable Google Now
- Disable automatic update check
- Disable profile-import on first run
Pro Based on Chromium
Supports all the modern web features.
Cons
Con Lacks privacy options
Con High RAM usage
Due the sandboxing, Chromium also eats a lot of RAM , which can be a problem for machines with smaller RAM.
Con No official builds
There are no official builds available so you have to rely on a third party distributor
Con Not possible to disable WebRTC
Con Fat, slow, and another piece of google spyware
Con Lacks support for certain common media formats
As Chromium avoids bundling any proprietary software, media that requires proprietary codecs or formats such as AAC, H.264, MP3 and Flash will not play by default on Chromium.
Con Can be dangerous / only available as Source
There are plenty of unofficial Chromium distributors and every one of them can disable specific features (like sandboxing) for their build, so you will never know what you get.
Con Under BSD License
Con Slow updates
Since the whole Chromium Release need to be scanned, PC users may wait half a year while the Chrome base gets updated five or six iterations.
Con Buggy
Sometimes, removing extensions won't work. Some websites downright refuse to load, no matter the settings.
Con Extensions MUST be updated manually
Con Poor debian support
current versions miss support for debian-based distributions which is by far the most widely used group of linux distributions.
Con Definitive unique browsing-fingerprint
Con Google Safebrowsing enabled by default
Con Based on Chromium
Since iridium is based off chrome, it is depend on all of Google's decisions.
