Find and Replace Text in Multiple Files Online

Upload multiple files, add one or many find → replace rules, process everything in your browser, and download the updated files as a ZIP.

Bulk Find & Replace

Apply sequential replacement rules across multiple files. Files are processed locally in your browser.

Replacement Rules

1

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Text & code files · 50 MB total

▶Supported file types
Code
.js · .jsx · .ts · .tsx · .py · .java · .cs · .cpp · .c · .h
.go · .rs · .php · .rb · .swift · .kt
Data & Config
.json · .jsonc · .xml · .yaml · .yml · .csv · .toml
.ini · .env · .properties · .config
Web & Text
.html · .css · .scss · .sql · .graphql · .md · .mdx · .txt
Total size usage0 Bytes / 50 MB

Summary

Files to process:0
Files changing:0
Total replacements:0

Bulk Find and Replace Multiple Files

Need to find and replace in multiple files without downloading complicated software? Our bulk find and replace tool lets you make the exact same text changes across dozens, hundreds, or even thousands of files instantly.

Your files are processed locally in your browser and are not uploaded to our server. You can read our Privacy Policy to learn more about how we keep your data secure. For more information about the tool's origins, check out our About page.

How to Replace Text Across Multiple Files

Using our bulk file editor is straightforward:

  1. Select or drop multiple files into the upload area above. Maximum total selected file size: 50 MB.
  2. Add your replacement rules. You can apply multiple find and replace rules at once.
  3. Click Preview Changes to see how many files will be modified.
  4. Click Apply Changes to execute the text replacements.
  5. Click Download All Files to get a ZIP archive of your newly modified files.

Apply Multiple Find and Replace Rules at Once

Unlike basic text editors, BulkFindReplace allows you to define multiple replacement rules in a single workflow.

Sequential replacement behavior:
Rules are applied from top to bottom. For example, if your first rule is foo → bar and your second rule is bar → baz, any instance of foo will ultimately become baz.

Common Use Cases

Here are some common scenarios where batch text replacement is useful:

  • Update domains across HTML files: Change an old URL to a new one across a static website.
  • Update API URLs across config files: Swap out an old endpoint URL for a new one in .json or .yaml files.
  • Rename values across JSON files: Standardize property names or values in large data exports.
  • Update Markdown links: Fix broken internal links across documentation in .md files.
  • Update repeated strings across source files: Change variable names or class names across .js, .ts, or .css files.
  • Migrate environment/config values: Quickly update .env examples or property files.

Why Use BulkFindReplace

We built this tool to solve a specific problem: quickly replacing text in multiple files online without installing a desktop application or writing a custom script. By processing everything directly in your browser, it's fast, free, and secure. If you encounter any issues, please contact us. By using the tool, you agree to our Terms of Service.

Frequently Asked Questions

Can I find and replace text in multiple files at once?

Yes, the primary purpose of this tool is to process multiple files at the same time. Simply select or drag your files into the upload area.

Can I use multiple find and replace rules?

Yes, you can add multiple find and replace rules. They are applied sequentially from top to bottom on each file.

Are my files uploaded to a server?

No. Your files are processed locally in your browser and are not uploaded to our server.

What file types are supported?

We support most text-based files, including code (.js, .ts, .py), data (.json, .csv, .xml), and web files (.html, .css, .md).

What is the maximum file size?

Maximum total selected file size: 50 MB.

Can I replace text with an empty value?

Yes, you can leave the "Replace" field blank to completely remove the matched text from your files.

Are replacement rules case sensitive?

Yes, our basic literal string replacement is case-sensitive by default to ensure precise matches.

In what order are replacement rules applied?

Rules are applied sequentially from top to bottom. The output of the first rule becomes the input for the second rule, and so on.

Do I need to install software?

No, the entire tool runs in your browser. There is nothing to install.

Do I need an account?

No, the tool is completely free to use and requires no account or registration.