When comparing Pale Moon vs Iridium Browser, the Slant community recommends Pale Moon for most people. In the question“What are the best desktop web browsers?” Pale Moon is ranked 5th while Iridium Browser is ranked 13th. The most important reason people chose Pale Moon is:
"Classic" Firefox add-ons can work, but they are not supported and should be updated or forked to become a Pale Moon add-on.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Has its own add-on ecosystem, built on time-tested technologies such as XUL (plus JS and CSS) and XPCOM
"Classic" Firefox add-ons can work, but they are not supported and should be updated or forked to become a Pale Moon add-on.
Pro Designed for usability, not the shiny new things
Pro Light on resources, although it's not its main focus
Pro Independent from Google and Mozilla
Pale Moon is an independent fork of an older version of Firefox. Therefore, it is independent from Mozilla and are not affected by their terrible decisions such as removing XUL, adding telemetry, pocket, etc.
Pro Customizable
Pro Stable
Pro Support for existing web standards
Pro Respects your privacy
Contains much less spyware than Chrome and Firefox and all of it can easily be disabled.
Pro Open source
So we can verify that the browser is not spyware.
Pro Supports complete themes
Pale Moon supports complete themes, something which Firefox used to have before version 57.
Pro Support for GTK themes
Pale Moon supports your GTK theme while Firefox does not.
Pro Uses Goanna layout engine
Unlike most other browsers, Pale Moon uses its custom engine.
Pro Has its own library of legacy extensions
Pro Very Independent
It isn't controlled by Google nor Mozilla, has its own engine.
Pro Good community support
Pro Optimized for modern processors
Pro Legacy Firefox
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 Unsecure
Pale Moon lacks the sandboxing and other privacy protecting features included in latest Firefox releases.
Con Still contains some spyware
Default homepage is spyware and search suggestions and automatic updates are enabled by default.
Con Outdated rendering engine
It is an really old fork of Gecko that misses many of the newer web features.
Con Pale Moon is based on very outdated Firefox code
Con Uses Goanna
It an old Gecko-fork that is developed mainly by one man.
Con Lacks popular extensions and adblockers
It doesn't have ublock origin and umatrix.
Con Does not contain multi-process sandboxing
Con Android version has odd behavior
Clicking does not work.
Con Pale Moon's website is cloudflared
Con WebAssembly enabled by default
Con Lead developer loves Cloudflare and hates Tor
Website is cloudflared and he thinks most sites should be hostile towards tor.
Con Incompetent developers
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.