Major UI Improvements and New Features

Hey there! 👋

I’m excited to announce a major update to Locust Test Results Comparison with a bunch of new features that make analyzing your performance test results much easier and more flexible.

Here’s what’s new:

🎯 Customizable Column Visibility

You can now show or hide specific metrics based on what you need to analyze:

• Toggle individual columns: Request Count, Failure Count, Response Times, Content Size, Requests/s, Failures/s
• Granular percentile control — show only the percentiles that matter to you (50%, 95%, 99%, etc.)
• Quick actions: “Select All” and “Deselect All” buttons
• Separate “All Percentiles” / “None” buttons for percentile management

This makes the comparison table much cleaner and lets you focus on the metrics that matter most for your specific analysis.

📊 File Name Display in Column Headers

Instead of generic “Result 1” and “Result 2” labels, the table now displays the actual names of your uploaded CSV files in the column headers. This makes it much easier to keep track of which results you’re comparing, especially when working with multiple test runs.

🕐 Time Unit Conversion

You can now switch between milliseconds (ms) and seconds (s) for all time-based metrics:

• Toggle between units with a simple button click
• Automatic conversion for:
  • Response Times (Median, Average, Min, Max)
  • All Percentiles
• Unit display in column headers (e.g., “Median Response Time (ms)”)
• Values recalculate on the fly — no need to reload data

Perfect for when you’re dealing with very fast or very slow responses and want to see the data in the most readable format.

🖥️ Fullscreen Mode

Analyzing large datasets with many columns? Hit the new Fullscreen button to expand the results table to fill your entire screen.

Features:

• One-click fullscreen toggle
• Exit with the button or press ESC
• Export functionality available in fullscreen
• Clean, distraction-free view

Great for presentations or when you need maximum screen for detailed analysis.

🧹 Clear All Functionality

Need to start fresh? The new Clear All button lets you:

• Reset all uploaded files
• Clear the comparison results
• Reset file input fields
• Start a new comparison without refreshing the page

The button appears only when you have data loaded, keeping the UI clean when you don’t need it.

📏 Units in Headers

All metrics now display their units in the column headers:

• Time metrics show (ms) or (s) based on your selection
• Content Size shows (bytes)
• Rates already include /s in the name

This removes any ambiguity about what you’re looking at.

What’s Still the Same

Don’t worry — all the core features you rely on are still here:

• 100% local processing — your data never leaves your browser
• Side-by-side comparison of two Locust CSV files
• Color-coded differences (red for worse, green for better)
• CSV export functionality
• No installation or signup required

Try It Out!

All these features are live! Upload your Locust test results and see the improvements for yourself!

Have a feature request or found a bug? Feel free to reach out or contribute to the project!

Thank you for using Locust Test Results Comparison! I hope these updates make your performance testing workflow even smoother. 🚀

— Dariusz