Line Tools

Use these Line Tools to sort, trim, clean, and deduplicate line-based text. It is useful for copied IDs, logs, configuration lists, allowlists, environment keys, CSV columns, route lists, and any text where each row carries its own meaning.

The tool is designed for quick cleanup before comparing, committing, importing, or pasting line-based data into another system. Instead of writing a small script or using several shell commands, you can normalize the list directly in the browser.

What This Tool Does

Line Tools supports common text-list operations:

• Sort lines from A to Z or Z to A
• Trim whitespace around each line
• Remove blank lines
• Remove duplicate lines
• Choose case-sensitive or case-insensitive matching
• Keep line-based data easy to scan and compare

These actions are especially helpful when input has been copied from a spreadsheet, dashboard, terminal output, issue comment, or documentation page.

Why Line Cleanup Matters

Small formatting differences make text harder to review. Extra spaces, duplicate rows, blank lines, and unstable ordering can create noisy diffs and hide real changes. This is common in allowlists, deny lists, feature flags, route lists, localization keys, IDs, and generated output.

Cleaning lines before review makes the data easier to compare and reduces the chance of committing accidental duplicates or whitespace-only changes.

Common Use Cases

• Deduplicating IDs, slugs, email addresses, or domains
• Sorting config entries before committing them
• Cleaning copied lists from spreadsheets or admin tools
• Removing blank lines from logs or generated output
• Normalizing line-based text before using a diff tool
• Preparing allowlists, redirects, or feature-flag keys for review

Example

Input

beta
  alpha
beta

Gamma

Cleaned and Sorted Output

Gamma
alpha
beta

Depending on the selected options, duplicate matching can be case-sensitive or case-insensitive.

Notes for Developers

• Sorting changes line order, so use it only when order is not meaningful
• Case-insensitive deduplication is useful for domains and identifiers
• Case-sensitive deduplication is safer for values where casing matters
• Trimming helps remove invisible whitespace before comparing values
• Line Tools is best for plain text lists, not structured JSON or CSV tables

Frequently Asked Questions

Does deduplication preserve the first matching line?

Yes, deduplication keeps one representative line and removes repeated matches based on the selected matching mode.

Should I sort logs with this tool?

Only sort logs when order does not matter. If timestamps or event order are important, use trim and blank-line cleanup without sorting.

Can I use this before Text Diff?

Yes. Cleaning line-based text before comparing it can make the diff easier to read.

Related Tools

• String Utilities
• String Transform
• Text Diff / Compare
• CSV <-> JSON Converter

Final Thoughts

Line cleanup is a practical step that prevents noisy diffs and messy lists. These tools make it fast to normalize pasted text before you use it in code, configuration, review, or documentation.