About Batch Rename PDF Tool
Batch Rename PDF is a powerful, browser-based tool designed to rename multiple PDF files simultaneously using customizable naming patterns. The application operates entirely client-side using modern web technologies, ensuring complete data privacy as no files are uploaded to external servers.
This tool is essential for users managing large document collections who need to apply consistent, professional naming conventions across multiple files without the time-consuming process of manual renaming or installing desktop software.
Rename Patterns & Capabilities
- ▸ Sequential Numbering: Add incremental numbers with customizable prefix, suffix, starting number, and zero-padding (e.g., Invoice_001.pdf, Invoice_002.pdf).
- ▸ Find & Replace: Search for specific text in filenames and replace it with custom text, with optional case-sensitive matching.
- ▸ Prefix/Suffix Addition: Add text before or after existing filenames while preserving original names.
- ▸ Custom Patterns: Use template placeholders like {name}, {index}, {date}, {time} to create complex naming schemes.
- ▸ Date/Time Stamps: Automatically incorporate current date and time into filenames for chronological organization.
- ▸ Live Preview: Real-time preview of all new filenames before applying changes, with duplicate and conflict detection.
How to Use
1 Upload PDF Files
Upload Methods:
- File Picker: Click "Select PDF Files" to open system file browser. Hold Ctrl (Windows) or Cmd (Mac) to select multiple files.
- Drag & Drop: Drag PDF files directly from file explorer onto the upload zone. Multiple files supported.
- Mobile: Tap "Select PDF Files" to access device file picker or photo library.
File Validation:
- Only PDF files (.pdf extension) are accepted
- Files are validated using PDF.js library before processing
- Original filenames and metadata are preserved
Privacy: Files remain in your browser memory and are never uploaded to any server.
2 Select and Configure Rename Pattern
Available Patterns:
- Sequential: Configure prefix, starting number, zero-padding (e.g., 3 digits = 001), and optional suffix.
- Find & Replace: Enter text to find and replacement text. Enable case sensitivity if needed.
- Prefix/Suffix: Add text before or after existing filenames without changing the original name.
- Custom Pattern: Use placeholders: {name} for original name, {index} for file number, {date} for current date, {time} for current time.
- Date/Time: Choose from predefined date/time formats to prepend or append timestamps.
Live Preview:
- Preview updates in real-time as you type or change settings
- Each file card shows: current name → new name
- Validation warnings appear for duplicates or invalid characters
Tip: Use drag handles (⋮⋮) to reorder files before renaming. Final rename order matches display order.
3 Preview and Validate New Names
Validation Checks:
- Duplicate Detection: System automatically identifies if multiple files will have identical names
- Invalid Characters: Warning if filenames contain characters not allowed by operating systems (/, \, :, *, ?, ", <,>, |)
- Empty Names: Prevents creation of empty or whitespace-only filenames
- Extension Preservation: .pdf extension is always maintained automatically
Review Process:
- Scroll through file list to verify each filename looks correct
- Check validation status indicator at top of file list
- Reorder files if sequential numbering needs adjustment
- Modify pattern settings and observe preview updates
Important: Once files are downloaded, original filenames are preserved. Download creates renamed copies.
4 Download Renamed Files
Download Options:
- Download All as ZIP: Creates a compressed archive containing all renamed PDFs. Single download with one click.
- Individual Downloads: Click download button on each file card to download files one at a time (available during preview stage).
Post-Download:
- Extract ZIP file to access all renamed PDFs
- Original files on your device remain unchanged
- Click "Rename More Files" to start a new batch
- All file data automatically cleared from browser memory
Privacy Guarantee: Zero network activity during entire process. Verify via browser DevTools Network tab.
Professional Use Cases
Invoice Organization
Rename invoices with sequential numbers and date stamps for easy chronological access. Example: "2025-01-Invoice_001.pdf", "2025-01-Invoice_002.pdf".
Document Archiving
Apply consistent naming conventions to archived documents using custom patterns. Add project codes, department identifiers, or archival dates.
Legal Case Files
Organize case documents with consistent naming: case number + document type + sequence. Ensures proper ordering for legal submissions.
Project File Management
Standardize project deliverables with find & replace to update version numbers, project phases, or client names across multiple files simultaneously.