Format Converter Tool can convert many kinds of file format to another format, including 【Word to PDF】, 【PDF to Word】, 【Excel to PDF】, 【Merge PDF】, 【Merge Word】, 【Convert File to Byte Array】, 【Convert Byte Array to File】.

It is written in C# and uses Windows Forms for its graphical user interface (GUI).

Please click the following figures or links to watch GUI demo videos:
轉檔工具 (Format Converter Tool using C#)-English Version

轉檔工具 (Format Converter Tool using C#)-中文版

1. Convert Word to PDF

2. Convert PDF to Word

3. Convert Excel to PDF

4. Merge PDF

Method 1: Free version is limited to 10 pages of PDF. (Using FreeSpire.PDF)
Method 2: No limitation of pages, but the conversion is time-consuming and the format may differ.

5. Merge Word

6. Convert File to Byte Array

7. Convert Byte Array to File

If you have any questions or suggestions about code, project or any other topics, please feel free to contact me and discuss with me. 😄😄😄