diff --git a/.lycheeignore b/.lycheeignore
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--- a/.lycheeignore
+++ b/.lycheeignore
@@ -7,6 +7,7 @@ https://scholar.archive.org/
 https://web.archive.org/
 https://www.researchgate.net/privacy-policy
 https://www.sciencedirect.com/
+https://www.core.edu.au/home
 
 https://github.com/koppor/jabref/issue
 https://github.com/koppor/jabref/pull
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@@ -0,0 +1,39 @@
+# The 'Icore' Field
+
+The [ICORE (International CORE Conference Rankings)](https://www.core.edu.au/home) is a ranking of computer science conferences (A*, A, B, C). JabRef allows you to lookup a conference's ICORE rank so you can find out how highly ranked a paper's venue is.
+
+By default, the `Icore` field shows up in the `General Tab` under the `DOI` field:
+
+![Icore Field In the General Tab](../../.gitbook/assets/icore-field-1.png)
+
+{% hint style="info" %}
+If you can't find it, you can [update your preferences](../../setup/generalfields.md) and add the `icore` field to the `General` tab.
+{% endhint %}
+
+Let's do a quick example. Add a new Entry of type `InProceedings` and enter a conference acronym in parentheses under the `Booktitle` field (we'll use SIGCOMM here).
+
+![Booktitle field with SIGCOMM in it](../../.gitbook/assets/icore-field-2.png)
+
+Now, navigate to the General Tab and click the "Lookup conference rank" button to see the ICORE rank for the conference (which would be A*).
+
+![SIGCOMM conference rank is A*](../../.gitbook/assets/icore-field-3.png)
+
+Additionally, if you click the button next to the lookup button, JabRef will open the found conference's ICORE page in your default browser.
+
+In case an acronym isn't present in the title, JabRef will then use the full `Booktitle` to match with a conference title. We'll use this long one for our next example:
+
+> Proceedings of the 3rd International Conference on Cloud Computing and Service Science, 8-10 May 2013, Aachen, Germany
+
+Copy-paste it into the `Booktitle` field, go to the `General` Tab, and click on the Lookup button again to see the conference's rank (which would be C).
+
+![A long booktitle with conference title in it](../../.gitbook/assets/icore-field-4.png)
+
+![Icore field with the conference rank for CLOSER](../../.gitbook/assets/icore-field-5.png)
+
+The feature allows lookups for `InProceedings`, `InCollection`, and `Article` entry types and looks for conference titles in the `Booktitle` or `JournalTitle` fields.
+
+In case an acronym is present but it doesn't match anything, JabRef will still fallback to searching for the entire title string. If a match is not found for the full title either, a notification with "not found" will be displayed and the Open Conference Page button will be disabled.
+
+![A booktitle that isn't an ICORE conference](../../.gitbook/assets/icore-field-6.png)
+
+![Not found conference notification and disabled Visit Page button](../../.gitbook/assets/icore-field-7.png)
\ No newline at end of file