# Text File Replacer

Find and replace text in files with support for regex, multiple patterns, and backup creation

> Canonical page: https://elysiatools.com/en/tools/text-file-replacer

- **Category:** Utilities

- **Keywords:** text, replace, find, substitute, regex, file, batch replace

## Overview

The Text File Replacer is a powerful utility designed to efficiently find and update specific strings or patterns within your text files, supporting advanced features like regular expressions and automated backups.

## Inputs

- **File Path** (file)
- **Find Text** (text): Text or pattern to find
- **Replace Text** (text): Text to replace with
- **Replace Type** (select)
- **Case Sensitive** (checkbox)
- **Whole Word Only** (checkbox)
- **Use Regular Expression** (checkbox)
- **Create Backup File** (checkbox)
- **Preview Only (don't modify file)** (checkbox)
- **Report Format** (select)

## When to use

- Updating outdated terminology or variables across large configuration files.
- Cleaning up formatting or removing unwanted characters from raw data exports.
- Standardizing naming conventions in code or documentation files before deployment.

## How it works

- Upload your target file and specify the text or regex pattern you wish to locate.
- Enter the replacement text and select your preferred replacement scope, such as all occurrences or per-line updates.
- Enable optional settings like case sensitivity or whole-word matching to refine your search results.
- Choose to create a backup file for safety, then execute the replacement or run a preview to verify changes.

## Use cases

- Bulk updating environment variables in configuration files.
- Refactoring code by renaming functions or classes across multiple files.
- Sanitizing log files by removing sensitive data using regex patterns.

## Frequently asked questions

### Can I use regular expressions for complex patterns?

Yes, simply enable the 'Use Regular Expression' checkbox to perform advanced pattern matching.

### Is it possible to see changes before modifying the file?

Yes, select the 'Preview Only' option to view the proposed changes without altering the original file.

### Does the tool automatically save a copy of my file?

Yes, the 'Create Backup File' option is enabled by default to ensure you have a restore point.

### Can I replace only the first occurrence of a word?

Yes, you can set the 'Replace Type' to 'First Occurrence Only' in the configuration settings.

### What output formats are available for the report?

You can generate reports in detailed, summary, CSV, or JSON formats to track your changes.

## Related tools

- [Text File Searcher](https://elysiatools.com/en/tools/text-file-searcher): Search for text patterns in files with advanced options (regex, case-sensitive, whole word, etc.)
- [Batch Audio Rename](https://elysiatools.com/en/tools/audio-batch-rename): Batch rename audio files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
- [Batch Image Rename](https://elysiatools.com/en/tools/image-batch-rename): Batch rename image files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
- [JSON File Merger](https://elysiatools.com/en/tools/json-merger): Merge multiple JSON files with various merging strategies (deep merge, overwrite, combine arrays, etc.)
- [Markdown Merger](https://elysiatools.com/en/tools/markdown-merger): Merge multiple markdown files with smart header level adjustment and table of contents generation
- [PDF RTL/LTR Support Tester (PDF双向文字测试)](https://elysiatools.com/en/tools/pdf-rtl-ltr-support): Preview left-to-right and right-to-left text flow in PDF with bidi reordering
- [Regex Replace Previewer](https://elysiatools.com/en/tools/regex-replace-previewer): Preview regex replacements in real-time with detailed diff highlights and statistics
- [Text Replacer](https://elysiatools.com/en/tools/text-replacer): Replace text using custom patterns

## Samples

- [Text with Emoji Samples](https://elysiatools.com/en/samples/text-with-emoji-samples): Mixed language text containing various Unicode emojis for testing emoji extraction
- [Regex Replace Samples](https://elysiatools.com/en/samples/regex-replace): Collection of common and useful regex replacement patterns for text transformation and data cleaning
- [Chinese-English Mixed Text Samples](https://elysiatools.com/en/samples/text-chinese-english-mixed-samples): Sample text files with mixed Chinese and English content for testing automatic spacing tools
- [Text Case Format Samples](https://elysiatools.com/en/samples/text-case-formats): Examples of different text case formats: camelCase, snake_case, kebab-case, PascalCase, and more