LOCAL FILE UTILITY / NUMBERED BATCH

Batch File Renamer

Rename up to 20 files as one ordered sequence and download the unchanged files together in a ZIP.

Processed in this browserUp to 20 files, 25 MB each and 50 MB combined. File bytes and extensions are preserved.

Step 1 / source

Choose the source

20 files - 50 MB

Drop your files here

Choose files in the order you want the new sequence to follow.

Browse filesChecking publication status...

No file upload

This operation runs with browser APIs. Nirmion receives catalogue requests, not the selected source bytes.

Original stays unchanged

The converter creates a separately named output. It never writes back into the source file.

Bounded work

Up to 20 files, 25 MB each and 50 MB combined. File bytes and extensions are preserved.

Plain-language method

How the sequence is assigned

Nirmion follows browser selection order, adds the entered starting number, pads it to a fixed width, preserves each extension, then packages the unchanged bytes into a ZIP.

01
Choose a valid source
Review the selected list order. Browsers may order multi-selection according to the file picker.
02
Review the conversion choices
A prefix such as product-photo with start 1 and padding 3 creates product-photo-001, product-photo-002, and so on.
03
Inspect the separate result
The output ZIP ends in _nirmion_tools_renamed.zip and contains every renamed copy.

Useful when

Practical jobs this tool handles

Number product photos before a handoff.
Create a stable scan or receipt sequence.
Standardise related assets without desktop batch software.

Before converting

Protect the intended order

Read the selected list from top to bottom.
Choose enough padding for the batch size.
Open the ZIP and verify names before replacing any existing files.

Know the boundary

Source files are not renamed in place

Browsers cannot rewrite local filenames. The tool creates renamed copies inside a new ZIP; your original files remain untouched.

Quick answers

Questions before you convert

The sequence is deterministic from the visible selection.

Are extensions preserved?

Yes. Supported extension characters are lowercased and retained after the sequence number.

Can two outputs get the same name?

Collision-safe suffixing prevents silent replacement inside the ZIP.

Why is the result a ZIP?

One archive delivers the complete batch in a single user-approved download.