Parsi RTL

Correct text direction and Persian font for RTL languages on any site — script-ratio detection, not first-strong guessing.

Right-aligned is not right-to-left. The usual fix for RTL text on the web is `unicode-bidi: plaintext`, which applies the Unicode first-strong rule: a paragraph takes its direction from its first strongly-directional character. That is wrong for the most common Persian sentence shape — one that opens with an English technical term: Gemini web app رو Google سرو می‌کند (تو نمی‌تونی local app رو modify کنی) First-strong sees the "G", lays the entire line out left-to-right, and the trailing parenthesis and clause order visually scramble. You end up reading a Persian sentence from the wrong end. Parsi RTL decides the direction of every block by SCRIPT RATIO instead: a Persian sentence carrying English terms stays right-to-left, an English sentence with one Persian word stays left-to-right. The decision is written onto the element as a real `dir` attribute, so caret movement, text selection and punctuation mirroring follow it too — things a CSS-only fix cannot reach. WHAT IT DOES • Every RTL script, not just Persian — Arabic, Urdu, Pashto, Kurdish, Sindhi, Hebrew, Syriac, Thaana, N'Ko, Adlam. • Works while answers stream in. AI chat replies arrive token by token, so a one-shot pass on page load fixes nothing; a frame-batched observer keeps up without the per-token slowdown a naive script causes. • Your code blocks stay left-to-right — including inline code inside an RTL sentence, and tables. • The composer follows what you type: the input's direction updates live. • Vazirmatn is bundled and applied only to blocks judged RTL, so icon fonts survive. A checkbox turns the font off while keeping the direction fix. • Per-site off switch, from the popup or with Alt+R (macOS: Option+R). • Right-click any block to force its direction by hand; the automatic pass never overrides your choice. • The popup reports whether the script is live in the tab and how many blocks it switched — you can always tell it is working. PRIVACY No network requests, no analytics, no account. The font ships inside the extension instead of being fetched from a CDN. The only stored values are your per-site off list and the font checkbox, in local storage on your machine. Open source: https://github.com/su6i/parsi-rtl