The batch file renamer lets you rename multiple files at once using stackable rules: find & replace, add prefix/suffix, sequential numbering, case changes, and extension changes. Preview all changes before applying.
1. Select Files
Drop files here or browse
Select multiple files — any type accepted
2. Configure Rename Rules
Rules are applied in order from top to bottom. Enable only the rules you want to apply.
3. Preview Changes
| Original Name | New Name |
|---|
How to Use the Batch File Renamer
Renaming dozens or hundreds of files manually is tedious and error-prone. This batch file renamer lets you apply multiple transformation rules simultaneously — see the changes in a live preview before applying them.
Step 1: Select Your Files
Click the upload zone or drag and drop files from your computer. You can select files from multiple folders by holding Ctrl/Cmd while clicking in the file picker. The tool supports any file type — images, documents, videos, code files, or anything else.
Step 2: Configure Rename Rules
Enable only the rules you need. Rules are applied in this order: Find & Replace → Prefix → Suffix → Sequential Numbering → Case Change → Remove Characters → Extension Change. For example, to rename IMG_3421.jpg to vacation-001.jpg: use Find & Replace to remove "IMG_", add prefix "vacation-", and enable sequential numbering starting at 1 with 3-digit padding.
Step 3: Preview and Apply
The preview table updates in real-time as you change rules. Changed parts are highlighted in amber. Review carefully — once files are renamed in-place, the original names are overwritten. If something looks wrong, uncheck or adjust the problematic rule before applying.
Common Use Cases
Photo organization: add date prefix and sequential numbering to camera photos. Code cleanup: convert filenames to kebab-case for web assets. Document management: add version suffix (_v2) or remove spaces for server compatibility. Batch format conversion: change all file extensions at once when converting between formats.
FAQ
Is this batch file renamer free?
Yes, completely free with no signup required. All processing happens in your browser — files are never uploaded to any server. Your files remain completely private on your device.
Can this tool rename files in-place on my computer?
In Chrome and Edge (version 86+), yes — using the File System Access API, you can grant permission to rename files directly on your filesystem. In other browsers (Firefox, Safari), the tool downloads renamed copies instead, since the File System Access API is not supported in those browsers.
How does the find and replace rule work?
Enter the text to find and what to replace it with. Enable the regex toggle for advanced pattern matching — for example, finding \d+ matches any sequence of digits. The replacement text can include capture groups like $1 for regex replacements. All rules are applied in order from top to bottom.
Can I preview the changes before renaming?
Yes — the preview table shows Original Name and New Name for every file before you apply any changes. Review the preview carefully before clicking Apply. Once files are renamed in-place, the original names are gone (though you can reverse by running the tool again with the names swapped).
Are the rules applied in a specific order?
Rules are applied in order from top to bottom: first Find & Replace, then Prefix, then Suffix, then Sequential Numbering, then Case Change, then Extension Change. You can reorder by checking/unchecking rules in different combinations to see the effect in the preview.
What is the maximum number of files I can rename at once?
There is no hard limit — the tool can handle hundreds of files. However, for very large batches (500+ files), the in-place rename may take a moment to process. Browser downloads for non-Chrome browsers are limited to what the browser's download manager can handle comfortably.