Why does Hebrew display in the wrong order in English text?

The Unicode Bidirectional Algorithm guesses direction from surrounding context. In a left-to-right paragraph, an embedded Hebrew run plus adjacent numbers or punctuation can be reordered incorrectly. Explicit bidi control characters tell the renderer exactly where the right-to-left run starts and ends.

What is the difference between isolates and embeddings?

Isolates (RLI U+2067 to PDI U+2069) are the modern recommendation: they set direction without letting the run affect the ordering of text around it. Embeddings (RLE U+202B to PDF U+202C) are the older mechanism and can have side effects on neighbouring characters, so prefer isolates unless you need legacy support.

When should I use the RLM marks option?

Right-to-Left Marks (U+200F) are a lightweight fix that nudges direction at a single point without wrapping a whole run. They are useful in places where you cannot insert paired controls, such as some plain-text fields, though they are less robust than isolates for longer runs.

The output looks identical to the input. Did it work?

Yes. Bidi control characters are invisible by design, so the copied text looks the same but carries hidden markers. Use the escaped view to confirm the markers are present; it shows each control character as its \uXXXX code so you can verify placement.

Is my text processed locally?

Yes. The marker insertion runs entirely in your browser. No text is uploaded, so your content stays private on your device.

Hebrew RTL Direction Fixer

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This tool fixes the garbled ordering you get when Hebrew is embedded inside left-to-right text, by inserting the correct invisible Unicode bidi control characters around each right-to-left run.

How it works

The tool scans for maximal runs of strong right-to-left characters (Hebrew, Arabic, and their presentation forms) and bridges any neutral characters — spaces, digits, punctuation — that sit between two RTL letters so a run like שלום 2 עולם stays intact. It then wraps each run using your chosen strategy:

isolate:  RLI (U+2067) … run … PDI (U+2069)
embed:    RLE (U+202B) … run … PDF (U+202C)
mark:     RLM (U+200F) … run … RLM (U+200F)

Isolates are the modern Unicode recommendation because they contain the run’s direction without disturbing the surrounding text. The escaped output renders each inserted control character as a visible \uXXXX escape so you can confirm exactly what was added.

Example and notes

Take the sentence The sign reads שלום 18 today. In a left-to-right context the number 18 next to the Hebrew can be reordered awkwardly. After fixing, the Hebrew run plus its bridged digits are isolated, so the phrase renders in the intended order while the English around it is untouched. Because the markers are invisible, paste the fixed text where it will be displayed and use the escaped view only to verify placement. Prefer isolates for HTML and modern editors; reach for RLM marks only in constrained plain-text fields that strip paired controls.