Recently LibXL 5.2 was released and we include this update in our upcoming MBS Plugins for FileMaker and Xojo.

Version 5.2.0 (2026-05-15)

• fixed the vulnerability CVE-2026-22184, updated zlib to the version 1.3.2
• added possibility to read data validations from xlsx files
• added possibility to remove filters from tables (xlsx)
• added the support for xlsx files in the Book::loadWithoutEmptyCells()
• fixed a bug with reading strings with incorrect character encoding in the Sheet::readStr() on Linux/MacOSX (xls)
• fixed an issue with loading some xls files with message "read error: record id can't be 0"
• fixed an issue with corrupting output files in the AutoFilter::setSort() method (xlsx)
• fixed the unhandled exception in the Format::borderLeftColor() method (xlsx)

• Sheet::dataValidation()
• Sheet::dataValidationSize()
• Table::isAutoFilter()
• Table::removeFilter()

Version 5.1.0 (2026-01-20)

• added the Book::errorCode() for getting error codes
• added possibility to read conditional formats with the Book::conditionalFormat()
• added possibility to remove conditional formattings with the Sheet::removeConditionalFormatting()
• added possibility to clear all data from a workbook with the Book::clear()
• fixed a bug with decrypting password-protected workbooks for the 32-bit version of the library
• fixed an issue that caused a crash when using an empty password

• Book::errorCode()
• Book::conditionalFormat()
• Book::conditionalFormatSize()
• Book::clear()
• Sheet::conditionalFormatting()
• Sheet::removeConditionalFormatting()
• Sheet::conditionalFormattingSize()

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.