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Book Collector (Windows)

v21.3: New “Transfer Field Data” tool

August 9th, 2021

A nice new v21.3 update is available for Book Collector now, in which we introduce a new super useful database management tool, called Transfer Field Data (new in the Tools menu).

In short, this tool lets you copy field values from one field to another, in batch, so for your entire database, or for a selection of books.

A tool like this has not exactly been a super common request, but we were seeing this question regularly:

” How can I move all data from field X to field Y? “

Sometimes the question originates from a user’s new insights into how to use the program’s fields in the best way. E.g. some users start using a User Defined Field for Location information, because they somehow missed that there is a special Location field.

Also, lately we have seen the question occur more often from users planning to switch to Book Connect. Since Connect does not have User Defined Fields, they want to move their UDF data to built-in fields, like Location, Owner, Tags and Notes.

Sadly, we did not have a solution for this (other than lots of manual labor).
But as of today, we will be able to answer the above question better, with a happy:

“Sure, just use the Transfer Field Data tool, from the Tools menu!”

The new Transfer Field Data screen

Here’s a screenshot of the new screen:

As you can see, it has a deceptively simple UI (just select the From and To fields). However, the internal workings are very complex, especially regarding the copying of field values between fields of different data types (e.g. how to go from a UDF checkbox field to the built in multi-value Tags field).

A preview at the bottom lets you preview the transfer action before Apply-ing it. Also, to be extra safe, the program makes an automatic pre-transfer backup in your Backup folder.

Hope you like the new tool.
PS. Any feedback about it is very welcome!


  • Add Books: More responsive checkboxes
  • Add Books: Fixed click area for removing barcode from queue
  • The Sort button in the main screen would sometimes not open the Sort Settings screen
  • Alphabet bar now works better for special characters

Recent changes

v23.1: Now supports our new CLZ Scanner barcode scanner app March 27th, 2023 v23.0: 3 completely new data fields and 4 new sync fields January 16th, 2023 v22: Configurable Pre-fill & Update from Core + WebP support March 10th, 2022 v21.5 Improved Submit to Core system October 8th, 2021 v21.4: Bar chart in folder panel background September 14th, 2021 v21.3: New “Transfer Field Data” tool August 9th, 2021 v21.2: New Link Books with Core screen April 28th, 2021 v21.1: More fields now sync to CLZ Cloud / Book Connect March 22nd, 2021 v21.0.3 Various improvements and fixes March 4th, 2021 v21.0: New: Pre-fill fields while adding books January 18th, 2021 v20.5 Easier access to the Manage Pick Lists screen August 25th, 2020 v20.4: Changing your folder field is now much easier July 30th, 2020 v20.3: Faster image downloads, faster Update from Core June 25th, 2020 v20.2: Faster Shelves View + 2 new Shelf Styles June 8th, 2020 v20.1 Faster CLZ Cloud syncing! March 25th, 2020 v20.0.2 Better Tag editing / Faster syncing February 4th, 2020 v20: Folder panel improvements + new Statistics screen January 13th, 2020 19.3: Many more fields now sync with the CLZ Cloud (inc. Back Cover)! October 14th, 2019 v19.2.1: New: Duplicate Finder tool April 15th, 2019 v19.1.2: More tweaks to the Add button March 25th, 2019 v19.1: Three cool tweaks requested by our users March 7th, 2019 v19.0: multiple collections, auto-sync images, 64-bit and a new Flex template! December 17th, 2018 Success rate for ISBN searches now 97%! (was 90%) August 6th, 2018 v18.4.1: Secure HTTPS connections July 30th, 2018 v18.3.1: Selection checkboxes / New Action Bars May 30th, 2018