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List Cleaner & Transformer

Clean, deduplicate, sort, decorate, and export delimited lists locally.
Local browser processing
Your input is processed only in this browser and is not uploaded, stored, or proxied.
Auto-detect delimiter
Lines
Natural ascending
Keep case
Input
Result

What this tool does

Paste a line- or delimiter-separated list, apply an ordered cleanup pipeline, and export the result in the format you need. JSON output is safely escaped; SQL text is a convenience and does not replace parameterized queries.

How to use it

  1. Enter or import the content you want to process.
  2. Choose the required options and run the tool.
  3. Review the output and limitations, then copy or download it.

Capabilities and limitations

Input is limited to 2 MB or 100,000 items. Delimiter detection is overridable, find/replace is literal, and SQL output must not replace parameterized production queries.

Related tools

Case ConverterText CompareJSON Formatter

Frequently asked questions

What delimiters are supported?
Lines, commas, tabs, and semicolons can be selected or detected.
Is deduplication case-sensitive?
You can choose case-sensitive or case-insensitive matching.
Is SQL output safe for production queries?
No. Use parameterized SQL in application code.
Are lists uploaded?
No. The transformation pipeline runs locally.