📝 Batch File Renamer

Supports sequential numbering, find & replace, prefix/suffix and more

🔒 Fully local processing, no server upload
🌍 Used by 50,000+ users ⭐ 4.9/5 rating 🔒 100% Private 🚫 No Ads, No Signup
📁

Click to select files/folder or drag & drop here

Supports any file type, selecting folder will read all files automatically

⚙️ Rename Mode

# indicates number position, count determines zero padding; {self} represents original filename

### {self}_### IMG_#### Keep original

📋 File List

0 files total
🔒

100% Free & Private

No ads, no signup, no watermark. Everything runs locally in your browser. Your data never leaves your device.

⚙️

Multiple Rules

Supports prefix/suffix, numbering, date, find & replace, case conversion and more

👁️

Real-time Preview

Preview rename results in real-time as you adjust rules, confirm before applying

🔒

Local Processing

Files are not uploaded, only filenames are processed in browser, privacy secured

❓ FAQ

Q: How many files can be batch renamed?

Theoretically unlimited, depends on browser performance. Recommended not to exceed 1000 files for smooth operation.

Q: What renaming rules are supported?

Supports prefix/suffix, sequential numbering, date insertion, find & replace, case conversion and more to meet most needs.

Q: Are files uploaded to a server?

No, all processing is done locally. Files never leave your computer, ensuring complete privacy.

Q: Can I undo the rename?

Before downloading, you can readjust rules or click "Reset" to restore. After downloading, you need to manually restore filenames.

Q: Can folders be renamed?

Only file renaming is supported, not folders. Selecting a folder will automatically read all files within for renaming.

Q: Is this tool really free? Are there any hidden charges?

Yes, this tool is 100% free with no hidden charges, no ads, and no signup required. It runs entirely in your browser — your data never leaves your device.

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About Bulk File Renamer Online

Welcome to the Bulk File Renamer Online, a powerful and 100% free browser-based utility engineered to deliver fast, reliable, and private solutions for bulk file renamer online. Whether you are a web developer, digital marketer, student, or business professional, this tool streamlines complex workflows into simple, automated actions without requiring software downloads or account registrations. With full client-side processing, you can work with confidence knowing that your sensitive data, files, and inputs are processed locally in your device memory and never leave your computer.

Optimized for high-volume productivity, our batch rename files browser provides real-time validation, responsive visual feedback, and cross-platform compatibility across desktop, tablet, and mobile devices. Explore the complete functionality of rename multiple files online free to speed up daily tasks, eliminate manual human error, and achieve pixel-perfect results in seconds. Built by senior SEO and web strategist TechErics Tools, this tool is part of our suite of 170+ free utilities designed to empower creators and businesses worldwide.

Bulk File Renamer Online Technical Overview & Feature Matrix

Key architectural highlights and operational specifications:

Feature Highlight Specification Operational Benefit
Processing ArchitectureClient-side JavaScript / HTML5Instant execution with zero server wait times
Security & PrivacyZero Data TransmissionInputs remain private in your local browser memory
Platform CompatibilityUniversal Web Responsive (Desktop & Mobile)Works on Chrome, Safari, Edge, Firefox, iOS, Android
Cost & Limitations100% Free ForeverNo subscriptions, API keys, or signups required

How to Use This Tool in 4 Simple Steps

  1. 1Drag and drop multiple files into the renamer.
  2. 2Choose renaming rules (Add prefix/suffix, Numbering, Replace text, Case change).
  3. 3Preview new filenames and click Download Renamed ZIP.
  4. 4Copy, download, or share your final output with one-click clipboard integration.

Key Features & Security Highlights

⚡
Instant Processing

Executes locally in your web browser with zero server lag.

🛡️
100% Private & Secure

Your inputs and files never leave your computer or device.

🎁
Unlimited Free Use

No paywalls, no credits, no daily quotas, and no registration.

📱
Cross-Device Ready

Works smoothly across desktop, tablet, and mobile browsers.

Frequently Asked Questions

Can I add sequential numbering like 001, 002, 003?

Yes, configure start number, step increment, and zero-padding digits.

How do I download all renamed files?

The tool bundles all renamed files into a single ZIP archive for fast 1-click download.

Can I use Bulk File Renamer Online for free commercial and business projects?

Yes, Bulk File Renamer Online is 100% free for both personal and commercial use with zero attribution requirements, licensing fees, or hidden paywalls.

Does Bulk File Renamer Online store or log my sensitive input data?

No. All computational logic executes locally within your browser sandbox. No input strings, files, or parameters are ever uploaded or transmitted across any third-party servers.

What browsers and operating systems support Bulk File Renamer Online?

The tool is compatible with all modern web browsers including Google Chrome, Apple Safari, Mozilla Firefox, Microsoft Edge, and works on Windows, macOS, Linux, Android, and iOS.