What file types can I rename?

Any file type. The tool works with images, documents, audio, video, and any other files your browser can read. The contents are not modified — only the filenames change.

Does renaming affect the file contents?

No. The tool only changes filenames. The file data is unchanged — it's simply repackaged with the new name in the ZIP download.

What does the {index} token do?

It inserts a sequential number starting from your chosen start value. You can control how many digits it uses (e.g., 2 digits gives 01, 02; 3 digits gives 001, 002). Files are numbered in the order they were uploaded.

Can I rename files of different types at the same time?

Yes. The {ext} token preserves each file's original extension, so mixed batches (e.g., JPG, PNG, PDF) all rename correctly.

Is there a file count limit?

There is no hard limit. Since only filenames are changed (not file contents), the operation is very lightweight and handles hundreds of files easily.

Images Tool Box

Utilities

Batch Rename Files Online Free

Rename hundreds of files in seconds using flexible patterns. Use tokens like {name}, {index}, and {date} to build consistent filenames. Add prefixes, suffixes, and sequential numbers, then download all renamed files in a ZIP.