lock document online
Lock excel, word, and powerpoint documents online
Secure your document from not authorized access in a few clicks by setting password protection. We do not store any entered passwords on our side. We support all major document formats.
1. Select document format
Leave Auto Detect to automatically detect your file extension or select document format from a list
We support all major formats for protecting (pdf, doc, xls, docx, ppt, xlsx, pptx etc)
Add document password to restrict access to your document.
Get started with Lock documents online
Secure documents online for FREEGet Started FREE
Select document format from a drop down.
Click on Open Locker App button.
Click inside the file drop area or drag n drop file into it to upload file.
Wait until documents are uploaded.
Enter password to secure your document with it.
Click on Lock button.
Download or share resulted document.
GroupDocs.Merger for .NET
Merge documents in .NET (C#) with flexible and feature-rich GroupDocs.Merger API.Explore GroupDocs.Merger API