Chapter 4 – Test Techniques
Snapshot Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A testing technique that captures a serialized form of an output and compares it against a stored reference on subsequent runs.
In simple words
Save the current output as the truth; fail if it ever changes.
Exam tip
Great for UI, poor for logic — reviewers must actually read the diff.
Related terms
- Visual TestingCompare screenshots against baselines to catch UI regressions that functional tests miss.
- ComparatorA diff engine used to compare actual vs expected output automatically.
- Regression TestingAfter any change — bug fix, new feature, config update — you re-run existing tests to make sure nothing that used to work has broken.
Practice this term in the ISTQB Mock Test
40 CTFL v4.0 questions, 60-minute timer, instant scoring and chapter-wise breakdown.
Practice in Mock Test