tools 17 September 2026
k6 Studio won't convert your JMeter test plan
k6 Studio records a browser session and writes a k6 script. It does not read a JMeter .jmx — and Grafana's converter that did is archived. When to use which.
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Performance testing notes
Practical notes on JMeter, k6 and Gatling — recordings, correlation, migration, results files and tooling. Written from client work, not vendor decks.
Start with these
- HAR to JMX File — browser recording → JMeter
- Migrating performance test scripts — JMeter ↔ k6 ↔ Gatling
- JTL files in JMeter — open and read results without the GUI
- JMeter + Prometheus + Grafana
tutorials Updated 11 September 2026
JMeter in Docker: bake the plugins in, or watch CI fail on a fresh runner
Why a bare JMeter Docker image is not enough for CI — the plugins, JDBC drivers and protocol jars have to be in the image. How to run JMeter in Docker properly, what a complete image contains, and when a pre-built multi-tool image is worth paying for.
Read more tools 9 September 2026
JMeter to Gatling in 2026: AI Skill vs Offline Convert vs Paying a Human
Gatling's AI converter skill, an offline multi-tool conversion, or a fixed-price human migration — how to choose a JMeter to Gatling path, fairly compared.
Read more tools Updated 9 September 2026
JMeter on Kubernetes (and k6, Gatling): Distributed Load Testing Done Right
Run distributed JMeter on Kubernetes with StatefulSet workers and RMI done properly — plus why k6 and Gatling need different K8s primitives, not one chart.
Read more tutorials Updated 9 September 2026
HAR to JMX: Chrome recording to a JMeter plan
Record a journey in Chrome, save the HAR, and convert it to a JMeter .jmx free in your browser — nothing uploaded. Plus what a raw conversion still gets wrong.
Read more tutorials Updated 9 September 2026
Correlation in JMeter: Find, Extract and Prove Dynamic Values
Correlation in JMeter: spot dynamic values, extract them with Boundary, Regex or JSON extractors, and prove the run is not silently testing nothing.
Read more tutorials Updated 9 September 2026
What is a .jtl file? Open one without JMeter
A JMeter .jtl is a CSV of every request your test made. What each column holds, how to open one in your browser without the GUI, and how to repair a broken file.
Read more tools 9 September 2026
The Official JMeter-to-k6 Converter Is Archived — What to Use Instead
Grafana's jmeter-to-k6 converter is archived and unmaintained. Four honest options for getting JMX into k6, and the checklist to run after any conversion.
Read more tools 9 September 2026
What a Performance Test Script Converter Will Never Migrate for You
Converters handle HTTP shape well. Custom code, tool-specific samplers, deep logic, correlation intent and secrets they flag, drop or fake — and when a fixed-price review beats more automation.
Read more tools Updated 29 August 2026
Capturing HTTP Traffic That Isn't in a Browser Tab
DevTools cannot see a mobile app, a desktop client or a service calling an API. Fiddler, mitmproxy and JMeter's recorder can.
Read more tutorials Updated 29 August 2026
Write Full JMeter Response Data to a File with JSR223
Use a JSR223 sampler and Groovy to write full HTTP response bodies, headers and status codes to a file in JMeter.
Read more performance 27 August 2026
Four Ways Generated Test Data Stops Being Test Data
Generated data can load cleanly, match its schema and pass every row count while making your load test measure the wrong thing entirely. Here are the four failures that cause it, and how to check your own data in ten minutes.
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