Rename multiple files at once with patterns, find/replace, and auto-numbering. Preview changes before applying.
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Drop files here or click to select multiple files
Select all files you want to rename
Rename Options
Find:
Replace:
Prefix:
Suffix:
Numbering:
Preview
Original Name
New Name
Privacy & Security: This tool is for personal use. Your files are not uploaded to any server. All processing happens client-side in your browser.
Disclaimer: Downloaded files will have new names. Original files on your system are not modified.
What the Batch File Renamer Does and Why It Matters
The Batch File Renamer applies a consistent naming scheme to many files at once using patterns, find-and-replace, and sequential numbering, all in your browser. Instead of renaming files one by one, you define a rule and preview the new names before downloading.
This matters because messy, inconsistent file names make folders hard to search and sort. Renaming in bulk — adding a prefix, replacing text, or numbering a sequence — turns a chaotic set of files into an organized, predictable one in a single pass.
How to Use Batch File Renamer
Select the files you want to rename.
Define your rule: a prefix or suffix, a find-and-replace, and/or a numbering pattern.
Preview the proposed new names alongside the originals.
Adjust the pattern until the preview looks right.
Apply and download the renamed files.
Supported Inputs and Limitations
What you provide
A set of files from your device
A naming pattern, find/replace terms, or numbering options
What you get
Renamed files following your scheme
A preview so you can confirm before downloading
Known limitations
It renames copies you download; it does not rename files in place on your disk.
Numbering order follows the selection order, so check the sequence in the preview.
Renaming large batches depends on browser memory.
Privacy and Security
Renaming is handled entirely in your browser. Your files are processed on your device and are never uploaded to NovaTools or any external service.
Frequently Asked Questions
Does it rename my original files directly?
No. It produces renamed copies for you to download, leaving your originals untouched until you choose to replace them.
Can I add sequential numbers?
Yes. You can apply numbering as part of the pattern, which is useful for ordering photos, scans, or exported assets.
Are my files uploaded?
No. All renaming logic runs locally and the files stay in your browser.
This free online tool helps you rename multiple files at once according to custom rules. You can find and replace text, add prefixes or suffixes, apply auto-numbering, and more. All changes are previewed before you download the renamed files.
How to Use
Select files by dropping them onto the upload area or clicking to browse.
Configure rename options: find/replace, prefix/suffix, numbering, and case options.
Click Preview Changes to see how files will be renamed.
Download all renamed files as a ZIP archive.
Frequently Asked Questions
Is my file data kept private?
Absolutely. All processing happens entirely in your browser. No file data is sent to any server. Your files are only used to generate renamed copies.
Are my original files modified?
No, this tool cannot modify files on your system. It creates new copies with different names that you download as a ZIP file. Your original files remain unchanged.
Can I rename files by their content?
No, this tool renames based on the current filenames and your specified rules. It does not analyze file contents for renaming purposes.
What file extensions are preserved?
When "Keep extensions" is enabled (default), the last part after the final dot is preserved as the extension. This works for most common file types.
Is there a limit to how many files I can rename?
There is no strict limit, but very large numbers of files (hundreds or more) may take longer to process and ZIP for download.
Recommended next reading
Use these practical guides to understand when this tool is the right choice, what to check before exporting, and which workflow usually comes next.
