File Name Helper

File Name Helper helps you rename groups of files with clear, repeatable rules. Build names with a prefix, topic, start number, digit padding, and optional find-and-replace, then preview every target name before applying the batch.

The app highlights duplicate or invalid filenames, preserves file extensions, and keeps recent rename preferences on your device for faster repeat use. It is useful for photo batches, documents, archives, and other local files selected by the user.

No sensitive permissions were observed in the app manifest. File selection is handled through Android's system picker and rename data is processed locally on the device.