Recently LibXL 5.0 was released and we include this update in our upcoming MBS Plugins 16.0 for FileMaker and 26.0 for Xojo.

Version 5.0.1 (2025-12-22)

• added the support of one more encryption algorithm
  (LibXL supports ECMA-376 standard and agile encryptions with SHA-1 and SHA-512 hashing algorithms)
• added password verifications with the error message "incorrect password"
• added the Book::loadInfoRaw() for loading only information about sheets from the workbook in memory buffer
• fixed an issue with decrypting password protected xlsx files on Linux and Mac

Version 5.0.0 (2025-12-05)

• added the support of password protected xlsx files (only loading)
• fixed a performance issue with reading cells from some large non-typical xlsx files that don't use "r" attributes in rows
• fixed issues with reading and writing code units above U+FFFF
• fixed an issue with Valgrind warning "Invalid read of size 1"
• fixed an issue with copying sheets with space characters in the name (xlsx)
• fixed issues with using LET, LAMBDA, BYROW and BYCOL functions (xlsx)
• fixed issues with reading some dates

• Book::setPassword()

The new password feature was often requested and we add the matching password parameters to our Load functions, so you can pass it to the plugin.

LibXL is a powerful library to create, read, edit and write Excel documents in older and newer Excel file formats and without the need to install Microsoft Excel. It allows the developer to automate a lot of tasks related to Excel spreadsheets within your solution or application.

Learn more on our LibXL for FileMaker and LibXL for Xojo pages.