How to Rename Files in Bulk on Mac (Step-by-Step Guide)
Agar aap Mac user ho aur aapke paas multiple files hain jinke naam ek saath change karne hain,…
Read Article →
File Name Changer Fast & Private
Change file names for any file type with custom patterns and automatic numbering. 100% client-side — your files never leave your device.
Start Changing Names →File Name Changer Tool
Upload any files, set your naming pattern, preview the changed names and download as ZIP
Click or drag files here
Supports ALL file types — documents, images, videos, audio, code and more (max 100MB per file)
Files will be named: project_report_1.pdf, project_report_2.docx, etc.
About the File Name Changer
Our File Name Changer is a versatile utility that lets you change the names of any file type — documents, spreadsheets, images, videos, audio files, code files, archives, and more. Whether you need to standardise a folder of mixed files or prepare deliverables for a client, this tool handles it in seconds.
The tool runs entirely inside your browser, which means your files are never uploaded to any server. This makes it fast, secure, and usable even without an internet connection after the page has loaded. There are no file type restrictions — if your operating system can handle the file, so can this tool.
Flexible Naming Options
The File Name Changer supports custom base names so you can name files anything you want. Automatic sequential numbering adds a number to each file to prevent duplicates. Choose from four separator styles — underscore, hyphen, space, or dot. You can also normalise file extensions to lowercase for consistency across platforms.
All File Types Welcome
Unlike tools that only handle images or documents, the File Name Changer works with every file type. PDF reports, Word documents, Excel spreadsheets, MP4 videos, MP3 audio, ZIP archives, Python scripts, HTML files, font files — everything is supported. File extensions are always preserved so your files remain fully functional.
100% Client-Side Processing
No File Upload Required
All File Types Supported
Completely Free Forever
Last Updated: April 14, 2026 | Author: File Rename Online Team
How to Change File Names in 3 Simple Steps
1
Upload Files
Select or drag any files into the upload area. All file types are supported — documents, images, videos, audio, code files and more.
2
Set New Name
Enter your desired file name, choose a separator style, and set the starting number. Preview updates live as you type.
3
Download ZIP
Click the button and your renamed files are packaged into a ZIP archive and downloaded instantly.
Who Needs a File Name Changer?
📄 Office Workers
Standardise reports, invoices, and contracts with consistent naming. Rename "Scan_001.pdf" to "invoice_january_1.pdf" in seconds.
🎬 Video Creators
Rename raw footage, B-roll clips, and audio tracks with project names and scene numbers for smooth editing workflows.
💻 Developers
Batch rename assets, test files, and data sets with predictable names that work in scripts and build pipelines.
🎓 Teachers & Students
Rename assignments, lecture notes, and project files with course codes and dates for organised academic workflows.
Why Choose Our File Name Changer
Instant Processing
Files are processed in your browser with zero upload time. Even hundreds of files are renamed in under a second.
100% Private
Your files never leave your device. No servers, no tracking, no cookies — total privacy guaranteed.
All File Types
Works with any file — documents, images, videos, audio, code, archives, fonts, and everything else.
Flexible Separators
Choose underscore, hyphen, space, or dot as your separator. Match any naming convention your workflow requires.
Completely Free
No hidden costs, no signup, no limits. Rename as many files as you need, whenever you need.
Works Everywhere
Fully responsive design works on desktops, tablets and smartphones. No app installation required.
Frequently Asked Questions
What file types can I rename?
Everything! The tool works with all file types — PDF, DOCX, XLSX, JPG, PNG, MP4, MP3, ZIP, PY, HTML, CSS, JS, WOFF, and any other file your browser can read.
Does it change file content?
No. Only the file name is changed. The file content, formatting, metadata, and internal structure remain completely untouched.
What separator should I use?
Underscores are most common in technical environments. Hyphens are preferred for web URLs and SEO. Spaces are natural for documents. Dots are sometimes used in versioning.
Is there a file count limit?
No limit on the number of files. Individual files can be up to 100MB each. The tool handles large batches smoothly in your browser.
Are my files uploaded to a server?
Absolutely not. Everything runs inside your browser using JavaScript. Files are read, renamed and zipped on your own device.
What does "convert extensions to lowercase" do?
This option changes extensions like .JPG to .jpg, .PDF to .pdf, etc. It helps ensure consistency, especially on case-sensitive systems like Linux servers.
Latest File Management Tips & Guides
Batch File Renaming Using CMD
Agar aapke paas hundreds ya thousands files hain jinke naam change karne hain, manually rename karna time waste…
Read Article →
How to Rename Multiple Files in Windows 10/11 (Easy & Fast Methods)
Agar aapke system me bahut saari files hain aur aap unhe ek-ek karke rename kar rahe ho, toh…
Read Article →