About

Standard string reversal is a computationally trivial task often implemented incorrectly. Most basic tools rely on naive splitting methods (e.g., str.split('')) which fail catastrophically when encountering surrogate pairs found in Emojis (e.g., 🌮) or complex grapheme clusters (e.g., Z͍). This destroys the character encoding, resulting in garbage output.

This tool utilizes the ECMAScript Internationalization API and iterator protocols to correctly segment strings by grapheme, ensuring that multi-byte characters, emojis, and combining diacritics remain intact during reversal. It is designed for developers debugging data streams, linguists analyzing patterns, and creative users generating stylized text.

Formulas

The naive approach to string reversal uses basic array splitting:

S_naive = split('') → reverse() → join('')

This fails for surrogate pairs. The correct approach uses the iterator protocol or Intl.Segmenter to respect grapheme boundaries:

S_safe = [...str] → reverse()

For Mirror Text generation, we map characters to their unicode antipodes:

f(x) = M[x] if x in M else x

M = The mapping dictionary of Latin characters to IPA/Cyrillic lookalikes.

Reference Data

Mode	Input Example	Output Example	Use Case
Standard Reverse	Hello 🚀	🚀 olleH	Cryptography, debugging, puzzles
Reverse Words	System Critical Error	Error Critical System	Sentence restructuring, yoda-speak
Reverse Lines	1. Alpha 2. Beta	2. Beta 1. Alpha	Log file analysis, list reordering
Mirror (Pseudo)	text	ʇəxʇ	Creative design, social media styling
Palindrome	Racecar	TRUE	Algorithm verification, leisure
Grapheme Count	👨‍👩‍👧 (Family)	1 Unit	Data validation, length checks

Frequently Asked Questions

Emojis often consist of multiple code points (surrogate pairs). Simple reversers split these pairs, leaving invalid Unicode characters. This tool uses grapheme-aware splitting to keep emojis intact.

Word reversal keeps the letters within a word in the correct order but swaps the position of the words themselves. Line reversal preserves the text within each line but flips the vertical order of lines (bottom becomes top).

No. "Mirror" text uses visually similar characters from different alphabets (like Cyrillic or IPA). While it looks like flipped English to a human, a computer sees it as entirely different characters.

Yes. The tool respects Unicode standards. However, visually reversing RTL text (like Arabic or Hebrew) may render it unreadable as the characters themselves rely on specific adjacencies for shaping.