Password-protect XLSX document – Online for FREE
Our document protect tool allows to protect several files at once online and for free. Protect PDF, DOCX or any other supported file formats. No third-party software installation is required. Web-based application is fast, robust, easy-to-use and absolutely free.
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Lightning fast protect operation for your selected documents.
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Indulge yourself into learning more about well-known document and image file formats.
XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.
We support a variety of document, web and e-book file formats, including PDF, DOC, DOCX, RTF, ODT and many more.
