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Bidirectional Text Analyzer - Online RTL/LTR Detection

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Bidirectional Text Analyzer

Detect and analyze RTL / LTR text direction, character‑level bidi classes, and hidden control characters instantly.

Enter Your Text

Frequently Asked Questions

Bidirectional text contains characters that flow from left‑to‑right (LTR), like English, and right‑to‑left (RTL), like Arabic or Hebrew. The Unicode Bidirectional Algorithm determines how mixed text is displayed correctly.

It examines every character in your input against known Unicode ranges for RTL scripts (Arabic, Hebrew, Syriac, Thaana, etc.) and also identifies neutral characters (spaces, digits, punctuation) and invisible bidi control codes (LRM, RLM, RLE, etc.).

Mixed RTL and LTR texts can appear jumbled if the environment does not correctly apply the bidi algorithm. Missing or misplaced bidi control characters (like LRM/RLM) or incorrect encoding often cause display issues.

Invisible characters (LRM, RLM, RLE, LRE, etc.) that tell the renderer to change text direction. This tool highlights them so you can debug direction problems in strings.

Yes, the analysis runs entirely in your browser. For performance with very long texts, you may disable the “Auto Analyze” option and use the manual Analyze button.
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