Bulk Rename Files Online
— Free, Fast & Private
Rename hundreds of files at once in your browser. Add prefixes, suffixes, auto-numbering, and find & replace. No software download required. Files never leave your device.
Try it now — drag your files below
Drag & drop files here
or click to browse from your device
How it works
Rename thousands of files in three simple steps, without your files ever leaving your computer.
Upload Files
Drag and drop your files into the zone above. They never leave your browser for maximum privacy.
Set Rules
Configure your renaming rules like prefix, suffix, case changes, or find and replace.
Download Renamed
Review the live preview and download all files nicely packaged in a single ZIP archive instantly.
Powerful Features
Everything you need to organize your files perfectly.
Add Prefix & Suffix
Easily append or prepend text to hundreds of files at once to maintain a clean naming structure.
Find & Replace
Quickly swap out specific words, dates, or characters across your entire selection of files.
Auto Numbering
Create sequential filenames like IMG_001, IMG_002, perfect for organizing photos and datasets.
Case Conversion
Easily force filenames to UPPERCASE, lowercase, camelCase, snake_case, and more.
Live Preview
See exactly what your new filenames will look like before writing any data or downloading.
100% Private
We use modern Web APIs. Files process locally on your device and are never uploaded to any server.
Who uses BulkRenameTool?
Photographers
Rename massive batches of RAW and JPGs from generic IMG_1234 formats into descriptive names.
Developers
Quickly clean up component names, apply snake_case to assets, and prepare files for production.
Content Creators
Organize video clips and audio stems systematically with prepended project ID codes.
Office Workers
Add correct dates and consistent company prefixes to all scanned PDF receipts and documents.
Frequently Asked Questions
Is this tool really free?
Yes, completely free forever. No signup, no payment, no tricks.
Are my files safe? Do you upload them anywhere?
No. All processing happens entirely inside your browser locally. Files never leave your device.
How many files can I rename at once?
There is no limit. You can rename 1 or 10,000 files at once seamlessly.
Does it work on Mac and Windows?
Yes. It works on any operating system running a modern browser — Chrome, Safari, Firefox, Edge.
Can I preview before downloading?
Yes. Our live preview lets you see the before and after for every file before creating the ZIP.
What file types does it support?
All file types! Images, videos, documents, code, audio — any file type is supported.
Do I need to create an account?
No. There is no signup, no email request, and no account wall.
Can I use regex for find and replace?
Yes. Simply toggle regex mode in the Find & Replace field.
Tips & Guides
Learn how to master file organization.
How to Bulk Rename Files Online in 3 Steps
Learn how to bulk rename hundreds of files online instantly. No software needed. Works in your browser.