What is a PAS file?
A .PAS file is primarily a Pascal source code file. It contains human-readable programming code written in the Pascal or Object Pascal language. Software developers use these files to write and organize application logic. A very common type is the Delphi Unit Source File, developed by Embarcadero Technologies for their Embarcadero Delphi programming environment.
While most .PAS files hold source code, the extension has other uses. It can be a Siemens WinCC compiled HMI action script, a digital oil and gas well test data file (Alberta EUB/ERCB standard), or a digital forensics report from Cellebrite Physical Analyzer.
How to open PAS files?
Because standard Pascal files are plain text, you can open them with general text editors like Notepad++, Visual Studio Code, or Sublime Text. To write, test, and compile the code, you need a dedicated Integrated Development Environment (IDE) such as Embarcadero Delphi, Free Pascal, or Lazarus.
If the .PAS file is a compiled script or a specialized database report, opening it in a text editor will display unreadable symbols.
File analysis and conversion
Because .PAS has multiple possible meanings, viewer.online/pas can analyze .PAS files to identify the exact format and creator software. You can use it to inspect the file structure, extract readable text, and check whether an online preview is available.
If you need to share the file with non-developers, we recommend converting it to sensible target formats on convert.guru. You can convert text-based .PAS files to .TXT, .HTML, or .PDF to share code snippets cleanly.
Summary
viewer.online/pas is useful for identifying, inspecting, and understanding .PAS files without installing software or dealing with compatibility problems.