This feature allows you to keep copies of old files when updating a Project. This is helpful when a site changes often and you would like to keep older Web pages when downloading their updated versions.

When this feature is enabled and Portable Offline Browser downloads an updated page, it renames older versions of the file according to the filenames format below.

Another application of the File copies feature is when you download a set of files with the same URL, but different POST requests. In this case, files will be not overwritten by each other, but every copy will be saved separately.

You can choose the number of file copies to keep on the disk and the filename format for the copies.

You can choose one of the following formats:

Filename.htm(1) - Portable Offline Browser will add the copy number to the end of the original filename.

Filename_1.htm - the copy number is added before the extension. This method preserves the file type.

Filename(7).htm - like the above.

The bigger copy number indicates the older file copy. Check Add leading zeros box to number files 01, 02..., depending on the number of copies selected.

The above 3 formats take some time to rename a file, if there are many copies of the same file already. To improve performance when you select over 10 copies, it is recommended to use Date/Time format (check the corresponding box).

By default the format is YYYYMMDDHHNN.

YYYY is being replaced by the 4-digit year, MM - two-digit month number, DD - day, HH – the current hour and NN - minutes. You can also use SS to specify the current number of seconds. The date/time corresponds to the moment when the file has just finished downloading.