A font filename does not prove that Arabic will render well. The file must contain the required glyphs, diacritics, numerals, and weights, and its internal family names must work on both iOS and Android.
Check the font before bundling it
Confirm that the license allows app distribution, the character set covers the product, and real files exist for every weight you use. Synthetic bold can close counters and reduce Arabic readability.
Use clear asset names and link them through the supported React Native asset process. After installation, test the registered family name on a physical iOS and Android build. Silent fallback can look acceptable until a rare glyph appears.
Build a typography component
type AppTextProps = TextProps & {
weight?: "regular" | "semibold" | "bold";
};
const families = {
regular: "NotoSansArabic-Regular",
semibold: "NotoSansArabic-SemiBold",
bold: "NotoSansArabic-Bold",
};
export function AppText({ weight = "regular", style, ...props }: AppTextProps) {
return <Text {...props} style={[{ fontFamily: families[weight] }, style]} />;
}This keeps font ownership in one place and makes later replacement manageable.
Review line height and scaling
Arabic needs enough vertical room for ascenders, descenders, and marks. Test headings, dense cards, buttons, validation messages, and multiline paragraphs. Avoid fixed-height containers around text.
Respect system text scaling for primary content. If a compact control needs a limit, test the limit explicitly and keep the action understandable through accessibility labels.
Use a real test string set
Include Quranic or fully marked text if the product supports it, Arabic and Latin in one sentence, Arabic-Indic and Western digits, punctuation, long names, and missing-glyph symbols. Review the same matrix on both platforms before approving the font system.