Batch File Renamer
Rename multiple files at once with powerful options
Batch rename files using powerful patterns and rules
Multiple Files • Max 50MB
Renaming Actions
Queue Stats
Related Tools
What is Free Batch File Renamer Online?
Rename hundreds of files at once without touching your operating system's file manager. Our Batch File Renamer works entirely in your browser — you can find and replace text in filenames, add sequential numbers, change letter case, insert timestamps, or use regular expressions for advanced patterns. All processing is local, so your files never leave your device.
Key Features & Benefits
Find & Replace in Filenames
Swap out any text string across all files at once — great for removing camera prefixes like 'IMG_' or correcting a typo in a batch.
Sequential Numbering
Add auto-incrementing numbers to filenames as a prefix or suffix, with simple or zero-padded formats (e.g. 001, 002, 003).
Live Rename Preview
See exactly what each filename will look like before you download anything. The table updates in real time as you tweak the settings.
Regular Expression Support
For complex patterns, the Advanced tab gives you full regex find-and-replace with global matching across all filenames.
How to Use the Free Batch File Renamer Online
Upload your files
Drag and drop files onto the upload area or click to browse. You can add up to 500 files and they'll appear instantly in the preview list.
Set your renaming rules
Use the Find & Replace tab for simple text substitutions, the Numbering & Date tab to add sequential numbers or timestamps, or the Regular Expressions tab for pattern-based renaming.
Check the live preview
Every filename updates in real time as you adjust settings. The preview shows the original name alongside the new one so you can catch any mistakes before committing.
Download your renamed files
Click 'Rename Files' and download a ZIP containing all your files with the new names applied.
Practical Use Cases
Organizing photos from a camera
Replace generic camera tags like 'IMG_0083' with descriptive names and timestamps, such as 'Vacation_2024-08-10_01'.
Cleaning up downloaded assets
Strip spaces, special characters, and symbols from image filenames before uploading them to a web server or CMS.
Batch-numbering invoice PDFs
Add client codes or sequential invoice numbers as a prefix to a batch of monthly PDF records in seconds.
Enforcing naming conventions
Use regex rules to convert mixed-case filenames to snake_case or kebab-case across an entire folder of project assets.
FAQs
How do I rename multiple files at once?
Upload your files, then use the Basic, Options, or Advanced tabs to configure renaming rules like find & replace, sequential numbering, or case changes. The preview updates in real-time. When ready, click 'Download ZIP' to get all your renamed files.
Is it safe to use this batch renamer?
Yes! All processing happens locally in your browser. Your files are never uploaded to any server, ensuring complete privacy.