Character & Word Frequency Analyzer
About Duplicate Character Finder
The Duplicate Character & Repeated Letter Inspector identifies and counts repeated characters, duplicate emojis, consecutive double punctuation (e.g. `???`, `!!`), and duplicate lines with 1-click character deduplication.
How to Use Duplicate Character Finder
Step 1
Paste your text into the input area.
Step 2
Select deduplication threshold (reduce duplicates to 1 or 2 characters).
Step 3
Inspect character frequency breakdown table.
Step 4
Click "Copy Deduplicated Text".
Practical Use Cases for Duplicate Character Finder
Sanitizing Database Keys & Unique Identifiers
Check strings for unintended duplicate characters or formatting artifacts before storing them as database slugs.
Social Media & Chat Message Polishing
Clean up exaggerated elongated words (e.g. "sooooo coooool" $\rightarrow$ "so cool") and excessive punctuation strings.
Input & Output Examples
Deduplicating Elongated Text
Text: "Wwwwoooowww!!!!! This is cooool."
Duplicate Analysis: "w" (4x), "o" (4x), "!" (5x) | Clean Text: "Wow! This is cool."
Key Features & Performance
- ✓Identifies character frequencies and flags characters occurring more than $N$ times consecutively.
- ✓Deduplication modes: Reduce to single character or reduce to maximum of 2 characters.
- ✓Supports full Unicode, emoji symbols, accented letters, and special whitespace.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy deduplicated text.
Key Terminology & Definitions
Character Run-Length
The number of identical consecutive characters occurring in unbroken sequence within a string.
Unicode Normalization
Standardizing visually identical characters (such as combined accents vs precomposed glyphs) into canonical Unicode codepoints.