Apply many replacements in one pass

Twenty find-replace pairs applied at once beats twenty trips through a one-pair dialog.

Tools used in this guide

The job

Renaming a product across a document, normalizing spellings, swapping a variable name — any 'all of these at once' edit is a rule list, not a repeated dialog.

Rules in lines

Write 'old => new' per line (up to 500, delimiter adjustable), paste the text, apply. Rules run top to bottom, so later rules see earlier replacements — order deliberately.

Worked example

Rules 'colour => color' and 'colourful => vivid' need vivid's rule first — otherwise 'colourful' becomes 'colorful' before the second rule sees it.

Where it stops

Rules are literal by default; a toggle enables regex patterns and another case-insensitive matching. Text ≤ 2 MB; a runaway-expansion guard stops at 2× the input size.