Step 1 / source
Choose the source
Drop your files here
Choose files in the order you want the new sequence to follow.
Checking publication status...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.
20 files - 50 MB
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.
- 01Choose a valid source
Review the selected list order. Browsers may order multi-selection according to the file picker.
- 02Review 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.
- 03Inspect the separate result
The output ZIP ends in _nirmion_tools_renamed.zip and contains every renamed copy.
WORKED EXAMPLE / REVIEW BEFORE RELYING
Batch File Renamer: a small review pass
Use a short, non-sensitive sample first. This example shows the checkpoints to apply before moving an authorised dataset into the destination workflow.
- FILESSource
Choose sample.batch file renamer with a header and two representative, non-sensitive records.
- Review the conversion choices
Keep the documented defaults, convert once, and compare the preview or result count with the Batch File Renamer sample.
- ZIPResult
Open the separate ZIP download and verify two records, field names, nulls, encoding, and destination compatibility.
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.