QAInsights JMeter AI

HTML Assertion

Configure the JMeter HTML Assertion assertions: properties, defaults, and practical usage notes for building reliable load tests.

Difficulty: intermediate
Guide type: reference
Estimated read time: 1 min read
Last verified version: Verified JMeter 5.6

Part of the Assertions category. Also documented in context in the full Component Reference.

HTML Assertion

The HTML Assertion allows the user to check the HTML syntax of the response data using JTidy.

Name	Required	Description
Name	No	Descriptive name for this element that is shown in the tree.
doctype	Yes	`omit`, `auto`, `strict` or `loose`
Format	Yes	`HTML`, `XHTML` or `XML`
Errors only	Yes	Only take note of errors?
Error threshold	Yes	Number of errors allowed before classing the response as failed
Warning threshold	Yes	Number of warnings allowed before classing the response as failed
Filename	No	Name of file to which report is written

Was this page helpful?

On this page

QAInsights JMeter AI I Am Speed Dosa

Getting Started

Docs MCP Get Started

Error Playbooks

Error Playbooks Index

Interactive Tools

Tools Hub cURL & HAR to JMX OpenAPI to JMX JMX Linter & Health Analyzer Groovy Script Builder Thread Calculator Heap Estimator CLI Command Builder Distributed Testing Planner Linux OS & Kernel Tuning Coordinated Omission Properties Cheat Sheet Regex Extractor Builder

Components

Functions

All Functions __regexFunction __counter __threadNum __threadGroupName __intSum __longSum __StringFromFile __machineName __machineIP __javaScript __Random __RandomDate __RandomString __RandomFromMultipleVars __UUID __CSVRead __property __P __log __logn __BeanShell __groovy __split __XPath __setProperty __time __jexl2 __jexl3 __V __evalVar __eval __char __unescape __unescapeHtml __escapeHtml __urldecode __urlencode __FileToString __samplerName __TestPlanName __escapeOroRegexpChars __escapeXml __timeShift __digest __dateTimeConvert __isPropDefined __isVarDefined __changeCase __StringToFile

Topic Guides

JMeter for Beginners API Load Testing JWT / OAuth / SSO Mutual TLS (mTLS) & Client Certs Correlation & Dynamic Values HTTP Recorder Functions & Variables CSV Data Set & Parameterization JSR223 Groovy Scripting Assertions & SLA Validation Logic Controllers & Flow Control Timers, Think Time & Pacing Thread Groups & Workload Modeling JDBC Database Load Testing JVM & OS Performance Tuning Plugins Essentials WebSocket Load Testing gRPC / Kafka / MQTT Grafana / Influx / Backend Listener APDEX / SLOs / Percentiles HTML Dashboard & APDEX Customization Docker / Kubernetes CI/CD Load Testing Distributed Testing Programmatic / DSL Plans Troubleshooting Interview Questions

User Manual

Building a Test Plan Elements of a Test Plan Building a Web Test Plan Advanced Web Test Plan Database Test Plan FTP Test Plan LDAP Test Plan Extended LDAP Test Plan Webservice Test Plan JMS Point-to-Point JMS Topic Test Plan Programmatic Test Plan Listeners Remote Testing Dashboard Report Real-time Results Best Practices Boss cURL Hints and Tips Glossary Regular Expressions Functions and Variables Properties Reference Component Reference

Extending JMeter

Extending JMeter Dashboard Generator

Reference

Release Notes Changes Changes History History & Future Building JMeter Creating Templates Download JMeter Security Issue Tracking Mailing Lists

Legal

Disclaimer NOTICE