Replace List Items

Find and replace specific items in a list. Replace matching entries with new values while keeping non-matching items unchanged.

Input
Item Boundaries
A specific character is used to separate list items.
A regular expression is used to separate list items.
Old Separator.
Replace Settings
Value to find in the list.
Value to replace with.
Output Separator.
Replace Item Options
Output items with different case as different elements in the list.
Remove spaces and tabs that surround items before replacing.
Don't include the empty list items in the output.
Output

What It Does

Find and replace specific items in a list. Replace matching entries with new values while keeping non-matching items unchanged.

How It Works

Replace List Items swaps one pattern, character set, or representation for another. The interesting part is not just what appears in the output, but how consistently the replacement is applied across mixed input.

Replacement logic usually follows the exact match rule the tool expects. Small differences in case, punctuation, or surrounding whitespace can explain why one segment changes and another does not.

All processing happens in your browser, so your input stays on your device during the transformation.

Common Use Cases

  • Update outdated terms in a keyword list
  • Replace placeholder values with real data
  • Correct misspellings across a list of entries
  • Swap old product codes for new ones in inventory lists
  • Replace abbreviated entries with full names

How to Use

  1. Paste your list into the input field.
  2. Enter the value to find.
  3. Enter the replacement value.
  4. Choose exact match or partial match mode.
  5. Click Replace to apply changes.
  6. Copy the updated list.

Features

  • Exact match or partial/substring replacement
  • Case-sensitive and case-insensitive options
  • Replace first occurrence or all occurrences
  • Preview changes before applying
  • Supports any list separator

Examples

Below is a representative input and output so you can see the transformation clearly.

Input
Replace List Items input:
Email: john.doe@example.com
Status: active
Output
Replace List Items output:
Email: john.doe@example.com
Status: active

Edge Cases

  • Very large inputs can still stress the browser, especially when the tool is working across many items. Split huge jobs into smaller batches if the page becomes sluggish.
  • Overlapping patterns and global replacements can produce broader changes than expected, so preview a small sample before full input.
  • If the output looks wrong, compare the exact input and option values first, because Replace List Items should be repeatable with the same settings.

Troubleshooting

  • Unexpected output often means the input is being split or interpreted at the wrong unit. For Replace List Items, that unit is usually items.
  • If a previous run looked different, check for hidden whitespace, changed separators, or a setting that was toggled accidentally.
  • If nothing changes, confirm that the input actually contains the pattern or structure this tool operates on.
  • If the page feels slow, reduce the input size and test a smaller sample first.

Tips

Use exact match mode when replacing complete items. Partial match mode is powerful but can cause unintended replacements if the search term appears as a substring of other items.

List-Level Find and Replace

Standard text find-and-replace operates on raw characters. List-level replacement understands item boundaries. Replacing "cat" in exact match mode only affects items that are exactly "cat" — not "catalog" or "concatenate". This prevents accidental modifications to items that merely contain the search term.

Batch Corrections

When an entire list needs systematic corrections — renaming a category, updating a status code, swapping a deprecated term — replacing at the list level is safer than text-level replacement. Each item is evaluated as a complete unit, and only matching items are modified.

Partial vs Exact Matching

Exact match replaces only items that are identical to the search term. Partial match replaces the substring within any item that contains it. Use exact match for clean data corrections. Use partial match for updating patterns like changing a domain name in a list of URLs or a prefix in product codes.

Frequently Asked Questions

Can I replace with an empty string to delete items?

Replacing with an empty string will make matched items empty. Use Delete List Items instead if you want to remove them entirely.

Is replacement case-sensitive?

By default yes. Toggle case-insensitive mode to match regardless of capitalization.

Can I replace multiple different values at once?

One find-replace pair per operation. Run the tool multiple times for multiple replacements.

What's the difference between exact and partial match?

Exact match replaces only items that are entirely equal to the search term. Partial match replaces the search substring wherever it appears within items.

Does it support regex?

This tool uses literal string matching. For regex-based replacement, use Find and Replace with regex enabled.

How many items can it process?

No practical limit. Replacement processes in milliseconds for lists of any reasonable size.