diff --git a/Frequently-Asked-Questions.md b/Frequently-Asked-Questions.md
index 77acd87..52380b7 100644
--- a/Frequently-Asked-Questions.md
+++ b/Frequently-Asked-Questions.md
@@ -96,7 +96,7 @@ The Firefox extension is not supported and marked as disabled for Firefox versio
## I know JavaScript and want to contribute to the project. How do I start?
-First, you need to prepare your [fork](https://help.github.com/articlenetworks/fork-a-repo) and setup the development environment. Don't forget to read the [[Contributing]] page. Second, make yourself familiar with the [PDF format and PDF.js internals](Additional-Learning-Resources). Third, if you don't already have a certain issue you want to fix, choose one from the [open issues labeled 5-good-beginner-bug](https://github.com/mozilla/pdf.js/issues?direction=desc&labels=5-good-beginner-bug&page=1&sort=created&state=open). Last, submit a [pull request](https://help.github.com/articles/using-pull-requests) for the review. _During any part of the process we recommend communicating with the PDF.js team on #pdfjs IRC channel at irc.mozilla.org if you have questions or need to find a reviewer._
+First, you need to prepare your [fork](https://help.github.com/articlenetworks/fork-a-repo) and setup the development environment. Don't forget to read the [[Contributing]] page. Second, make yourself familiar with the [PDF format and PDF.js internals](Additional-Learning-Resources). Third, if you don't already have a certain issue you want to fix, choose one from the [open issues labeled 5-good-beginner-bug](https://github.com/mozilla/pdf.js/issues?direction=desc&labels=5-good-beginner-bug&page=1&sort=created&state=open). Last, submit a [pull request](https://help.github.com/articles/using-pull-requests) for the review. _During any part of the process we recommend communicating with the PDF.js team in the [Matrix room](https://chat.mozilla.org/#/room/#pdfjs:mozilla.org) if you have questions or need to find a reviewer._
## Is it possible to add annotations to a PDF?
@@ -178,14 +178,14 @@ Yes. PDF.js will attempt to recover usable PDF data (pages, content or fonts) an
## I have a really great idea. Where is the best place to record it?
-You can contact the developers on our IRC channel `#pdfjs` on `irc.mozilla.org`.
+You can contact the developers in our [Matrix room](https://chat.mozilla.org/#/room/#pdfjs:mozilla.org).
The issue tracking system is designed to record a single technical problem. A bug report is something a developer/contributor can work on. The [GitHub issue tracker](https://github.com/mozilla/pdf.js/issues?state=open) is not a good place for general, not well thought out or unworkable ideas. Most likely a discussion-type issue will not be addressed for a long time or closed as invalid.
## I'm developing a custom solution based on PDF.js core library. Can you help me?
-We are glad to hear that and will try to help you, but first check the examples at https://github.com/mozilla/pdf.js#learning and search existing [issues](https://github.com/mozilla/pdf.js/search?q=keyword&type=Issues). If this does not help, please prepare short well-documented example that demonstrates the problem and make it accessible online on your website, JSBin, etc. before opening a new issue or contacting us on the IRC channel -- keep in mind that just code snippets won't help us troubleshoot the problem. Issues that do not provide enough details will be closed as invalid/incomplete (see [reporting issue](#issue) above).
+We are glad to hear that and will try to help you, but first check the examples at https://github.com/mozilla/pdf.js#learning and search existing [issues](https://github.com/mozilla/pdf.js/search?q=keyword&type=Issues). If this does not help, please prepare short well-documented example that demonstrates the problem and make it accessible online on your website, JSBin, etc. before opening a new issue or contacting us in the Matrix room -- keep in mind that just code snippets won't help us troubleshoot the problem. Issues that do not provide enough details will be closed as invalid/incomplete (see [reporting issue](#issue) above).
## I want to render all 100 pages in a document at a high resolution. Is it a good idea?
@@ -213,7 +213,7 @@ The version number consists of three digits: the major release number, minor rel
We are moving fast and trying to land as much good stuff as we can review and test. The [generic viewer](http://mzl.la/pdf-js) always contains the latest PDF.js build and is available for testing.
-We regularly (usually weekly or bi-weekly) push the library to the [Firefox Nightly](http://nightly.mozilla.org/) channel. To promote the latest beta to a stable release, we listen for feedback (via [GitHub](https://github.com/mozilla/pdf.js/issues), [Bugzilla](https://bugzilla.mozilla.org/enter_bug.cgi?product=Firefox&component=PDF+Viewer) or [IRC](irc://irc.mozilla.org/%23pdfjs)) from the users and projects that use the library. If no critical issues (e.g. a build is unusable, major regressions, et cetera) appeared, we promote the build to stable. Otherwise we fix the issues and create a new beta release.
+We regularly (usually weekly or bi-weekly) push the library to the [Firefox Nightly](http://nightly.mozilla.org/) channel. To promote the latest beta to a stable release, we listen for feedback (via [GitHub](https://github.com/mozilla/pdf.js/issues), [Bugzilla](https://bugzilla.mozilla.org/enter_bug.cgi?product=Firefox&component=PDF+Viewer) or [Matrix](https://chat.mozilla.org/#/room/#pdfjs:mozilla.org)) from the users and projects that use the library. If no critical issues (e.g. a build is unusable, major regressions, et cetera) appeared, we promote the build to stable. Otherwise we fix the issues and create a new beta release.
## What types of PDF files are slow in PDF.js? Can I optimize a PDF file to make PDF.js faster?