Lodash vs Underscore

Downloads & Popularity

Lodash leads with 163.4M weekly downloads — roughly 5.3x more. Underscore has 30.6M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Underscore has the smallest gzipped bundle at 7.3 KB. Lodash comes in at 25.2 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Lodash has an overall health score of 85/100 (very good), with strong maintenance, security, popularity scores. Underscore has an overall health score of 67/100 (good), with strong security, popularity scores. Health scores are calculated from maintenance activity, code quality, security posture, popularity, and stability metrics.

When to Choose Each

Choose Lodash if you value massive community and ecosystem, actively maintained, strong security track record. Choose Underscore if you value massive community and ecosystem, strong security track record.

Frequently Asked Questions

Is lodash better than underscore?

It depends on your needs. Lodash has a health score of 85/100 while Underscore scores 67/100. Lodash has more recorded weekly downloads (163.4M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.

Which has a smaller bundle size, lodash or underscore?

Underscore has the smaller gzipped bundle at 7.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.

How many developers use lodash vs underscore?

Lodash has more recorded weekly downloads (163.4M). Download counts reflect package installations, not unique developers.

Which is better maintained, lodash or underscore?

Lodash has a maintenance score of 100/100. Lodash scores 100/100 and Underscore scores 40/100 on maintenance.