What variables can I use in the pattern?

{name} = original name, {n} = sequence number, {date} = today, {ext} = extension.

Can I add leading zeros to numbers?

Yes — use {n:03} for 3-digit zero-padded numbers.

No. Everything runs locally in your browser.

Any file type — renaming only changes the filename, not the content.

Free plan: up to 50 files. Pro: much higher limits.

Rename multiple files in bulk using patterns, sequences, and metadata. Securely process files in your browser memory with zer

Your files never leave your device. Processed locally. 100% private.

Unlocking Tool Engine...

Complete your task perfectly in just three straightforward steps.

Drop the files you want to rename.

Enter a pattern using variables: {name}, {n}, {date}, {ext}, custom text.

Preview new names then download the renamed files as a ZIP.

Everything you need to know about the Bulk File Renamer.

Continue working with our suite of free data utilities.

Convert CSV files to formatted Excel workbooks (.xlsx). Processed entirely in your browser for 100% data privacy and zero fil

Convert Excel workbooks (.xlsx, .xls) to CSV files — all sheets or selected. Fast, private, and secure browser-based tool wit

Generate realistic fake data: names, emails, addresses, and more. Export as CSV. Securely process files in your browser memor