Is argon2 better than bcrypt?

It depends on your needs. Argon2 has a health score of 79/100 while Bcrypt scores 67/100. Bcrypt has more recorded weekly downloads (7.7M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.

Which has a smaller bundle size, argon2 or bcrypt?

Bcrypt has the smaller gzipped bundle at 2.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.

How many developers use argon2 vs bcrypt?

Bcrypt has more recorded weekly downloads (7.7M). Download counts reflect package installations, not unique developers.

Which is better maintained, argon2 or bcrypt?

Argon2 has a maintenance score of 80/100. Argon2 scores 80/100 and Bcrypt scores 40/100 on maintenance.

Which is the best overall choice between Argon2 and Bcrypt?

Based on a weighted analysis of popularity, bundle size, maintenance, and code quality, Bcrypt is the overall recommended pick. It has 7.7M weekly downloads, a 2.3 KB gzipped bundle, and a health score of 67/100. However, the best choice depends on your specific project requirements.

Comparison guide

Argon2 vs Bcrypt

Argon2 won the Password Hashing Competition. bcrypt has 20+ years of battle-testing. Compare security, performance, bundle size, and serverless compatibility.

Quick Verdict

Smallest Bundle

Bcrypt

2.3 KB gzipped

Downloads & Popularity

Bcrypt leads with 7.7M weekly downloads — roughly 2.5x more. Argon2 has 3.0M weekly downloads. Higher download counts generally indicate broader community adoption and a larger ecosystem of tutorials, plugins, and support.

Bundle Size

Bcrypt has the smallest gzipped bundle at 2.3 KB. Argon2 comes in at 3.1 KB. A smaller bundle size means faster page loads, which improves user experience and Core Web Vitals scores.

Health Score Comparison

Argon2 has an overall health score of 79/100 (very good), with strong maintenance, security, popularity scores. Bcrypt 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 Argon2 if you value large community support, minimal bundle footprint, strong security track record. Choose Bcrypt if you value large community support, minimal bundle footprint, strong security track record.

Our Verdict

Both Argon2 and Bcrypt are solid choices for JavaScript development. Argon2 has the edge in overall health score (79/100), while each package brings unique strengths to the table. Evaluate them based on your project's priorities — whether that's community size, bundle efficiency, or maintenance activity — and choose the one that aligns best with your requirements.

Frequently Asked Questions

Is argon2 better than bcrypt?: It depends on your needs. Argon2 has a health score of 79/100 while Bcrypt scores 67/100. Bcrypt has more recorded weekly downloads (7.7M). Consider your specific requirements — bundle size, community support, and feature set — to decide which is the better fit.
Which has a smaller bundle size, argon2 or bcrypt?: Bcrypt has the smaller gzipped bundle at 2.3 KB. A smaller bundle means faster load times for your users, which can positively impact SEO and user experience.
How many developers use argon2 vs bcrypt?: Bcrypt has more recorded weekly downloads (7.7M). Download counts reflect package installations, not unique developers.
Which is better maintained, argon2 or bcrypt?: Argon2 has a maintenance score of 80/100. Argon2 scores 80/100 and Bcrypt scores 40/100 on maintenance.

Argon2 vs bcrypt: Modern Standard vs Time-Tested Classic

Argon2 and bcrypt are both password hashing algorithms designed to be intentionally slow, making brute-force attacks computationally expensive. bcrypt has been the default recommendation for password hashing since the late 1990s — it's battle-tested, widely understood, and supported in every major programming language. Argon2 is the newer contender, winning the Password Hashing Competition (PHC) in 2015, and is now recommended by OWASP as the preferred password hashing algorithm.

Argon2's key advantage over bcrypt is memory-hardness. bcrypt is CPU-hard — it takes a fixed amount of memory regardless of the cost factor — which means attackers can parallelize bcrypt cracking on GPUs or ASICs relatively efficiently. Argon2 is both CPU-hard and memory-hard: you configure it to use a specific amount of RAM per hash operation, making GPU-based attacks orders of magnitude more expensive because GPUs have limited per-core memory. For high-security applications, Argon2's resistance to hardware-accelerated attacks is a meaningful advantage.

In the Node.js ecosystem, the practical difference comes down to native dependencies. The argon2 npm package requires a C compiler and node-gyp during installation, similar to bcrypt. For serverless deployments where native bindings are problematic, bcryptjs (pure JavaScript bcrypt) is often the path of least resistance. If you can handle native dependencies and want the strongest available password hashing, Argon2id (the hybrid variant) is the 2026 best practice. If you need maximum deployment compatibility or are working with existing bcrypt hashes, bcrypt remains perfectly secure for the foreseeable future.

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The 2026 JavaScript Stack Cheatsheet

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