This is a short guide showing how to get yomitan setup to be used with Arabic.
Get the yomitan browser extension.
On the welcome page that opens automatically, scroll to the bottom and disable “Show this welcome guide on browser startup”

Press on the yomitan icon in the extensions tab and press the settings cog

Open this link: https://mega.nz/folder/oiJRDCLa#w5wbAa6IEijQpqEJKhVDnw and download the following:
Mixed Decons.zip - contains deconjugation information for many words, highly recommended regardless which other dictionaries you want to downloadLisaan masry.zip
Also make sure to also get the corresponding “forms” dictionary for each of the the dictionaries you chose to download in the previous step:

Change the language to:
Arabic (Egyptian) (arz) if you intend to look up words in the Egyptian dialect or another dialect with grammar very different to MSA/FushaArabic (MSA) (ar) if you intend to look up words in MSA/Fusha or a dialect with grammar similar to MSA/Fusha
Open Get recommended dictionaries and download the kty-ar-en dictionary (this is a mainly MSA/Fusha dictionary, but recommended regardless of which dialect you mainly want to look up) and if you wish the IPA dictionary

Close the current menu and press on “configure installed and enabled dictionaries”

Press the import button, then select and upload all of the dictionary files you have just downloaded


Configure advanced scanning inputs and this will allow you to use your extra mouse buttons if you would like, this makes looking up much more effortless)
Appearance on the left hand menu, open Configure custom CSS, and paste the following in the Popup CSS box:/* don't display dictionary de-inflection chains */
.inflection-rule-chain:has(.inflection-source-icon[data-inflection-source="dictionary"]),
.inflection-rule-chain:has(.inflection-source-icon[data-inflection-source="both"]) {
display: none;
}
