List converter
Trim, deduplicate, sort, lowercase, and wrap line-based lists with custom separators.
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Using this tool
Clean line-based data by trimming, lowercasing, deduplicating and sorting, then add separators and wrappers.
Actions: Convert
Example
Keep default trimming and empty-line removal; lowercase, deduplicate and sort ascending, then wrap the two remaining items.
Example action and settings
Action: Convert Convert to lowercase: On Remove duplicates: On Sort: Ascending Separator: , Item prefix: " Item suffix: " List prefix: [ List suffix: ]
Input / action
B a B
Result / expected behavior
["a", "b"]
Available options: Trim items · Remove duplicates · Remove empty lines · Convert to lowercase · Keep line breaks · Sort · Natural numeric sort · Separator · Item prefix · Item suffix · List prefix · List suffix
Scope and limitations
- Wrappers are plain text concatenation, not JSON or CSV escaping; output is limited to 5,000,000 characters.
Common mistakes
- Lowercasing happens before deduplication; enabling it merges Apple and apple into one item.
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Privacy and browser support
Input is processed in this browser. Do not use real keys or active sensitive credentials as demonstration data. Device features require browser support and your permission.