AMPL File Viewer

Online tool for viewing and highlighting AMPL optimization model and data files

// Upload an .ampl, .mod or .dat file to view its content

Supported file types: .mod, .dat, .ampl

Supported File Types

.mod

Model files

.dat

Data files

.ampl

Script files

.txt

Text files

Click the "Choose File" button above or drag and drop your AMPL file anywhere on this page.

Select your AMPL file (.mod, .dat, .ampl or .txt extension) from your computer.

View your optimization model or data with syntax highlighting in the viewer above.

(Optional) Copy the highlighted code by selecting it and using Ctrl+C/Cmd+C.

Privacy Focused - Your optimization models and data never leave your browser
Instant Syntax Highlighting - Get clear visualization of your AMPL code structure
No Installation Needed - Works directly in your web browser with no setup
Supports All AMPL Files - Works with model (.mod), data (.dat), and script (.ampl) files
Research Friendly - Perfect for quickly sharing and reviewing optimization models
Free Forever - No hidden costs or premium features

Is my AMPL model uploaded to any server?

No, all processing happens in your browser. Your models and data never leave your computer.
What's the difference between .mod and .dat files?

.mod files contain model definitions while .dat files contain parameter data. Both are supported.
Is there a file size limit?

The practical limit depends on your browser's memory, but most AMPL files will work fine.
Can I run my models in this viewer?

No, this is a viewer only. To run models you need the AMPL software.
Does this support other optimization languages?

Currently this tool is specialized for AMPL files only.