Pairwise Test Case Generator
Define your parameters and their values and get a minimal all-pairs test set — one that covers every pair of values across every pair of parameters, with a fraction of the tests a full combination would need.
Everything runs in your browser — nothing is uploadedParameters
One row per parameter. Enter the values comma-separated (e.g. Chrome, Firefox, Safari).
About this pairwise test case generator
Testing every combination of inputs explodes fast: four parameters with three or four values each already means dozens of combinations, and adding a fifth parameter can push you into the hundreds. Pairwise testing (also called all-pairs testing) is the standard way to cut that down. It's based on the empirical finding that most defects are triggered by a single value or the interaction of just two values — so instead of testing every full combination, you generate a much smaller set that still covers every pair of values across every pair of parameters. This free tool runs a greedy all-pairs algorithm entirely in your browser: enter your parameters and values, click generate, and it builds a compact test set and shows you exactly how many tests it saved.
It's aimed at QA engineers, SDETs, and developers doing configuration and combinatorial testing — browser × OS × screen size, feature flags, API parameter matrices, pipeline config permutations, and the like. Export the result as a markdown table to drop into a test plan or pull request, or download it as CSV to feed a data-driven test runner. No data leaves your device, so it's safe to use with internal parameter names.
FAQ
What is pairwise (all-pairs) testing?
It's a combinatorial technique that generates the smallest practical set of test cases such that every possible pair of values (across every pair of parameters) appears together in at least one test. It dramatically reduces test count while catching the large majority of interaction defects.
Is the generated set guaranteed to be the absolute minimum?
No — finding the provably smallest all-pairs set is NP-hard. This tool uses a fast greedy algorithm that produces a small, valid set covering 100% of pairs. It's typically within a few tests of optimal, which is more than enough for practical testing.
How many parameters and values can I use?
You can add as many parameters as you like, each with as many comma-separated values as you need. Larger inputs simply produce more (but still far fewer than exhaustive) test cases. Everything computes instantly in your browser.
Can I export the results?
Yes. Copy the test set as a markdown table for a PR or test plan, or download it as a CSV for a data-driven test framework. Nothing is uploaded — the export is generated locally.
Independent community tool — runs entirely on your device.