Size Limit Action
A GitHub Action that compares JavaScript bundle size and performance cost in pull requests to enforce performance budgets.
What is Size Limit Action?
Size Limit Action is a GitHub Action that uses the Size Limit tool to monitor and enforce performance budgets for JavaScript applications and libraries. It calculates the real cost of JavaScript bundles, including size and execution time, and provides feedback directly in pull requests. This helps development teams prevent performance regressions by ensuring code changes stay within defined limits before merging.
JavaScript developers and teams who want to maintain performance standards in their applications or libraries, especially those using continuous integration and pull request workflows on GitHub.
Developers choose Size Limit Action because it seamlessly integrates performance budgeting into the GitHub workflow, providing automated, actionable feedback in pull requests. It enforces limits proactively, reducing the risk of performance regressions reaching production, and is highly configurable to fit various project structures and build processes.
Overview
Compare the real cost to run your JS app or lib to keep good performance in every pull request
Use Cases
Best For
- Enforcing performance budgets in JavaScript applications during code review
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