Batch change file names
Attach consecutive numbers or replace names to multiple files. Preview the modified names and save a ZIP copy.
The original file is not changed. It is processed in the browser, and the task is reset after reloading.
Result
Select the file and run it.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
How to use and processing criteria
This is the process of calculating new names for files and creating a ZIP copy with the changed names.
Actual example
Change a.jpg and b.jpg to the default names photo, start number 1, and 3 digits, resulting in photo_001.jpg and photo_002.jpg. If “Keep original extension” is on, the original extension (e.g., jpg) is retained.
Frequently Asked Questions
Do I want to change the file name of my device directly?
The original file is not changed. Check the new name preview, then create and download a ZIP copy. The preview must be checked again if the input changes.
How should duplicate names and substitution ranges be handled?
The substitute applies to all characters found in the name except the extension. The first and last characters are added to the renamed name, and the extension is placed at the end. Duplicates and dangerous path names in case, case, Unicode normalization are rejected.
Calculation criteria and reference materials
- PKWARE — ZIP format specification
File header, compression method, file name encoding, and CRC check
Verification of calculation criteria: · Calculation·verification principles · Report errors