About

Manual text replacement is a high-risk activity. A single missed occurrence of a sensitive term (like a placeholder client name or a variable x) can compromise a document's integrity or break code compilation. The Word Swapper mitigates this risk by automating the replacement pipeline, allowing for multiple, sequential modifications in a single pass.

Unlike standard text editors that handle one phrase at a time, this tool utilizes a Sequential Transformation Chain. You can define a set of rules R, where each rule acts as a function mapping the input string S to a modified state. This is critical for tasks requiring bulk anonymization, code refactoring, or content spinning where consistency is mathematically mandatory.

Formulas

The transformation process is defined as a composition of n replacement functions applied to the initial text T₀:

T_final = f_n(f_n-1(... f₁(T₀)))

Where each function f_i is defined by a tuple:

f_i ≡ (target, replacement, flags)

If the Regex flag is active, the search complexity scales with the pattern length; otherwise, it operates with linear time complexity O(L × M) where L is text length and M is the number of rules.

Reference Data

Symbol	Definition	Example Match
.	Wildcard (Any character)	c.t → cat, cut
^	Start of Line	^Title
$	End of Line	end$
\b	Word Boundary	\bword\b
\d	Digit (0-9)	123
\w	Word Character (Alphanumeric)	User_1
*	Zero or more repetitions	ab*c → ac, abbc
+	One or more repetitions	ab+c → abc, abbc

Frequently Asked Questions

Yes. The tool processes rules sequentially from top to bottom. If Rule 1 changes "Cat" to "Dog", and Rule 2 changes "Dog" to "Bird", the original "Cat" will eventually become "Bird". Place specific rules before general ones.

Direct swapping requires a temporary placeholder to avoid collision. Create 3 rules: 1) Replace "A" with "TEMP_A". 2) Replace "B" with "A". 3) Replace "TEMP_A" with "B".

Yes. Enable the ".*" checkbox on a specific rule. You can then use standard JS RegExp syntax (e.g., "\d+" to find all numbers). Ensure your syntax is valid or the rule will be skipped.

Absolute. All processing happens 100% within your browser using the Client-Side JavaScript engine. No text is ever sent to a server.