IDE extension. SonarLint.

clean code begins in your IDE with {SonarLint}

Up your coding game and discover issues early. SonarLint in the IDE helps you find & fix bugs and security issues from the moment you start writing code.


your IDE and programming language. covered.

SonarLint is a free IDE plugin available to install from your IDE marketplace

Visual Studio

Detect issues in real-time and get clear guidance on how to fix them in Visual Studio.

Install in Visual Studio

Visual Studio Code

Get on-the-fly analysis on your coding issues and clear guidance on how to fix them in VS Code.

Install in VS Code


Supports different Eclipse flavors and provides issue detection and fix guidance.

Install in Eclipse


From IntelliJ, PyCharm, CLion to Android Studio, Rider, and many more, SonarLint supports your IDE.

Install in JetBrains

a must-have in every developer's toolbox

real-time feedback as you code

Your IDE is the best place to catch coding issues. SonarLint enables you to code better with on-the-fly analysis and support for hundreds of deep static analysis rules to detect common mistakes, tricky bugs, and security issues.

easy to use, no configuration required

Get maximum coverage for your programming language with no installation overhead or lengthy setup. Just install the plugin and continue to code while SonarLint assists you in the background. It's the only in-IDE solution you'll ever need.

Increase velocity

accelerate code delivery

The quality of your codebase shouldn't be a topic of concern when the code you commit is always clean. A shift-left approach with SonarLint allows early detection of issues, so you can get it right the first time and avoid costly rework downstream.

An example of a coding rule is shown from the SonarPedia page. In this example Noncompliant Code is shared along with a Compliant Solution.
continuous learning

help developers learn and grow

SonarLint helps developers of all skill levels make better coding decisions and provides them the knowledge & guidance they need to fix coding mistakes, uncover best practices, and learn along the way.

Explore SonarLint -->
Issues with code are revealed within the developers platform while guidance for remediation is provided from Sonar
SonarLint features

your IDE companion for clean code

SonarLint easily integrates into your existing IDE workflow and helps you to commit with confidence.

Install For Free -->

4800+ rules covering wide range of issues

Powerful language-specific analysis detects Bugs, Code Smells & Security Vulnerabilities and supports latest language standards. The large ruleset spans all attributes of code—reliability, maintainability, readability, security, quality, and more.

real-time analysis and guidance

On-the-fly analysis provides instant feedback as you code. SonarLint highlights coding flaws and provides clear guidance on why the issue is harmful and how to fix it.

easy review with issue dataflow

Issue highlighting includes all the code locations that contribute to each issue. A listed view in the SonarLint panel lets you focus on the most important ones first.

quick fix coding flaws

‘Quick fixes’ intelligently suggest solutions adapted to your specific code so you can automatically repair flagged issues in real-time.

unique rules to prevent Cloud Secrets leaks

‘Secret’ detection rules identify confidential user or system-level information in source code or language-agnostic files before they are committed.

easy issue customization

Easy customization allows you to mute rules on-the-fly, mark issues as false positive, or exclude files from analysis. Start with a default rule profile and customize it based on your project's need and standard.

unified team rules and analysis settings

Get coverage at every stage in your dev cycle—IDE to CI/CD and back. When 'connected' with SonarQube or SonarCloud, rules, and analysis settings are synchronized to SonarLint, aligning teams on a single standard of code health.

go further with 'Connected Mode'

Extend the capabilities of SonarLint by addressing security hotspots detected by SonarQube and taint analysis results from SonarQube/SonarCloud directly in your IDE.

a single solution for multiple languages

  • Swift icon
  • XML icon
  • python icon
  • TS icon
  • terraform icon
  • java icon
  • JS icon
  • cplus icon
  • csharp icon
  • tsql icon
  • Kotlin icon
  • cloudformation icon
  • HTML
  • RPG icon
  • objective-c
  • FLEX
  • GO
  • C
  • VB Logo
  • CSS
avatar of a person with quote marks around them

SonarLint is a valuable companion to prevent coding errors and potential performance issues in my code.

SonarLint Visual Studio User, Review

Featured Blog post

modernize code quality with quick-fixes

Boost your productivity by automatically applying fixes to repair code quality issues in your IDE with SonarLint.

Read More
A roll of tape is being used to fix coding issues.
Background image of bits of code connecting to each other

ready to write better code?

Install For Free -->
  • Sonar Solutions
    • Clean Code
    • Clean as You Code
    • Commitment to open source
    • For developers
    • For teams
    • For enterprise
  • Follow SonarSource on Twitter
  • Follow SonarSource on Linkedin

© 2008-2022, SonarSource S.A, Switzerland. All content is copyright protected. SONAR, SONARSOURCE, SONARLINT, SONARQUBE and SONARCLOUD are trademarks of SonarSource SA. All other trademarks and copyrights are the property of their respective owners. All rights are expressly reserved.