Dear Sarah!
Thank you for your time and kind support. The screenshot I sent contains Persian text and clearly shows that RTL rendering is not working correctly. Based on my testing and review, ArcGIS Instant Apps does not fully support Persian (Farsi) in the same way it supports Arabic. The following points outline my observations for your kind consideration:
ArcGIS Instant Apps relies on the language localization framework of ArcGIS Online / ArcGIS Enterprise to translate its user interface and Esri-defined text, such as menus, buttons, labels, and tooltips. Only languages with built-in localization packs are eligible for full UI translation. Currently, Persian is not included among these built-in languages, whereas Arabic is supported as a core locale.
The Language Switcher component in ArcGIS Instant Apps differentiates between:
- Fully supported languages, which include pre-translated Esri UI strings and correct layout behavior.
- Partially supported or custom languages, where only user-defined text can be translated, while Esri-defined UI elements remain unchanged.
Since Persian is not listed as a fully supported language, Instant Apps treats it as a partial or custom (non-standard) language. As a result, Esri-defined UI text is not translated automatically, and right-to-left (RTL) alignment does not function correctly.
Even for fully supported languages, map content such as pop-ups, field names, and layer titles is not translated automatically and must be localized manually within the web map or by using Arcade expressions. This limitation applies to all languages.
At present, there is no official indication that Persian is included as a fully supported language within the ArcGIS Online/Enterprise localization framework. Without a built-in localization pack, the Instant Apps framework cannot automatically translate system UI elements or apply proper RTL layout behavior for Persian.
Arabic is fully supported in ArcGIS Instant Apps because it is included in the ArcGIS Online/Enterprise localization framework. Persian, however, is not part of this core localization list and is therefore treated as a non-standard language within Instant Apps.
It is important to note that Persian (Farsi) is an official language in Iran, Afghanistan, and Tajikistan, and is widely spoken in Uzbekistan, Pakistan, Iraq, Azerbaijan, Turkmenistan, the United Arab Emirates, Bahrain, Turkey, and other regions. Persian has over 130 million speakers worldwide.
Despite being used across multiple countries by a large global population, Persian currently does not receive the same level of RTL and UI localization support as Arabic, which continues to be prioritized as a fully supported RTL language across many platforms, including ArcGIS.
I fully respect and appreciate the importance of the Arabic language and its strong support within the ArcGIS platform. I sincerely hope that Persian (Farsi) will also be considered for inclusion in the list of fully supported languages in future Esri releases.
Many thanks again for your time and thoughtful feedback, it really means a lot to me.
Best,
Faiez
