Batch rename files

Camera names like IMG_4821.JPG, exports called download (7).pdf, scans named by a timestamp: renaming them by hand is slow and error-prone. This tool renames every file in a set with one pattern and hands them back in a ZIP. The contents of the files are not touched.

How do patterns work?

A pattern is the new file name, with tokens in curly brackets that are filled in per file:

• {name} is the original name without its extension.
• {n} is a running number, starting at 1 in the order you added the files.
• {n:03} is the same number padded with zeros to three digits: 001, 002, 003. Use {n:04} for four digits.
• {ext} is the original extension, such as jpg or pdf.
• {date} is today's date as 2026-09-25.
• {w} and {h} are the width and height in pixels, for images.

Some examples: holiday-{n:03}.{ext} gives holiday-001.jpg, holiday-002.jpg. {date}_{name}.{ext} puts today's date in front of each original name. product-{n}-{w}x{h}.{ext} gives product-1-1200x800.jpg. The default is {name}_{n:03}.{ext}.

Padding the numbers matters more than it looks: without it, many programs sort file 10 before file 2.

What if I leave out the extension?

It is added for you, so a pattern of invoice-{n} still gives invoice-1.pdf. Characters that are not allowed in file names are removed, and if two files would end up with the same name, a number is added to the second.

Does renaming change the files?

No. Only the names change. Photos keep their quality and metadata, documents keep their content.

Is it private?

Renaming runs on our server. Your files are uploaded over an encrypted connection and deleted, with the renamed copies, automatically within two hours.

Is it free?

Yes, for small sets. Renaming only makes sense for several files, so it always runs as a batch. Up to 5 files are free without an account and 10 with a free account; Pro renames up to 500 at a time. Each file can be up to 50 MB. In the pipeline builder, the same patterns name the results of any recipe, so you can resize, compress and rename a folder in one run.

How to batch rename files

1. Drop your files onto the drop zone, in the order you want them numbered.
2. Type the pattern, such as photo-{n:03}.{ext}.
3. Click Rename.
4. Download the ZIP of renamed files.