How to sort, dedupe, and convert text lines

Cleaning a list of emails, sorting log lines, or removing duplicate SKUs — all are line-based text operations. The Text Line Tools page bundles the most common transforms.

How it works

1. Paste text — one item per line.
2. Click a transform — sort, dedupe, randomize, or change case.
3. Copy output — result appears in the output box.

Available transforms

• Sort A→Z / Z→A — locale-aware alphabetical sort.
• Remove duplicates — keeps first occurrence, case-sensitive.
• Randomize — shuffle line order.
• Case — UPPERCASE, lowercase, Title Case.

Privacy

All transforms run locally. Your list data never leaves the browser.

The How to sort, dedupe, and convert text lines is free, runs locally, and never sends your data to a server. More text tools at maratool.com.