TXT Document Content Batch Replacement Tool

Supports single-file and batch modes, allows multiple sets of replacement rules, and supports regular expressions and whole-word matching.

Bug report

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

Return to old version

Set replacement rules first, then import text or files, check the results, and download.

Supports plain text, regex, case sensitivity, whole-word matching, and running multiple rules in order. Single text can be copied or downloaded directly; multiple files keep original filenames and are packed as a ZIP.

Local processing Regex Replace Batch Compress Save Rules

Current task Waiting for setup

Enable Rule0

Files to process0

Matches0

Results0

Tip: Complete Step 1 rule setup before Step 2 import.

Set Replacement Rules

Multiple rules run from top to bottom. Use an example or preview first, then batch process files.

Replacement rules Rules with empty find text are skipped

Match options In regex mode, use capture groups like $1, $2

Case sensitive Whole word match Regular expression Multiline mode Preserve case Skip unchanged files

Common templates Clicking will overwrite current rules; you can still edit them

Saved rules Saved on this device

Rule set name

Enter text or upload files

Single text is for quick pasted content; batch files support plain text files such as TXT, CSV, MD, JSON, XML, LOG, HTML, CSS, and JS.

Text content

Chars:0 Lines:0 Words:0

Click to select or drag multiple text files here Only the first 20 files are shown; all files will be processed

Pre-check Preview before replacing is recommended

Waiting

Preview Not generated

Highlight matches

Content after replacement

View results and download

Single text can be copied or downloaded as TXT; batch files are output with original filenames, with numbers appended for duplicates.

Processing Stats No results yet. Run replace first.

Successful files0

Total replacements0

Time used0ms

File Name	Replacements	Original size	New size	Status
No results yet

Single text result You can still select and copy snippets manually

Instructions

Software Usage Instructions

Set replacement rules: Enter the text or regular expression to match in “Find”, and enter the new content in “Replace with”. Leave it blank to delete the matched content.
Add multiple rules: Click “Add Rule” to create multiple rules. The tool will execute them in order from top to bottom; you can move up, move down, copy, disable, or delete a single rule.
Configure matching options:
- Case sensitive: Strictly distinguish uppercase and lowercase English letters.
- Whole word match: Replace only complete words to avoid replacing inside words.
- Regular expression: After enabling, you can use regex syntax and use capture groups such as $1 and $2 in the replacement content.
- Multiline mode: Make ^ and $ match the beginning and end of each line.
- Preserve case: During plain text replacement, try to keep the original letter case format.
Select processing mode:
- Single text: Suitable for pasting text for quick processing, and you can also import one text file.
- Batch files: Suitable for processing multiple plain text files at the same time, such as TXT, CSV, MD, JSON, XML, LOG, HTML, CSS, JS, etc.
Preview replacement results: Click “Preview Replacement Results” to view highlighted matches and the replaced content. Confirm that the rules are correct before processing.
Start processing: After clicking “Start Processing”, single text will generate results that can be copied and downloaded; batch files will process all files one by one.
Download results: After batch processing, you can download a ZIP archive. Output file names are the same as the original file names by default; if duplicate names occur, numbers will be appended automatically to distinguish them.
Reuse rules: Frequently used rules can be saved as rule sets, or exported as JSON files, and quickly restored later by importing rules.

FAQ

A: Common plain text files are supported, such as TXT, CSV, MD, JSON, XML, LOG, INI, CFG, HTML, CSS, JS, SQL, etc. Binary files, encrypted documents, or complex formatted documents are not suitable for direct processing.

A: Plain replacement searches by literal content and is suitable for replacing fixed words or phrases; regex replacement can match patterned content such as phone numbers, email addresses, dates, and whitespace characters, and supports using $1 and $2 to reference capture groups.

A: Rules are executed from top to bottom. The result of the previous rule continues into the next rule, so it is recommended to place rules with a smaller scope and higher precision first.

A: No. Text reading, replacement, compression, and downloading are all completed locally, and file contents will not be uploaded to the server.

A: The original file names are kept by default. If multiple files have the same name, the tool appends a number to the file name to prevent files in the archive from overwriting each other.

A: Possible reasons include inconsistent capitalization, whole-word matching being enabled, mismatched regular expression syntax, disabled rules, or invisible whitespace characters in the text. You can use the preview feature first to check matches.