pify
Promisify callback-style functions for modern JavaScript development.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is pify?
Pify is a small utility that converts callback-based functions into promise-returning ones. This tool simplifies the use of asynchronous operations in JavaScript, making it easier to work with promises and async/await syntax.
Key differentiator
“Pify stands out as a lightweight, easy-to-use utility for converting callback functions into promises, making it ideal for developers looking to modernize their JavaScript codebases without significant refactoring.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Pify only converts simple callback functions into promises and does not handle more complex scenarios such as nested callbacks or error handling comprehensively.
While Pify can convert functions to return promises, using these with async/await requires further configuration and understanding of promise-based patterns.
Given its niche functionality, the tool has a relatively small user base and infrequent updates, which may lead to slower resolution of issues or feature requests.
The conversion from callbacks to promises can sometimes obscure the original logic flow, making debugging and maintenance more challenging.
Fit analysis
Who is it for?
✓ Best for
Developers working on projects that need to transition from callback-based functions to promises
Teams looking to modernize their codebase and take advantage of async/await syntax in JavaScript
✕ Not a fit for
Projects that do not use or plan to use promise-based operations
Developers who prefer sticking with traditional callback patterns for asynchronous programming
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Integrations
Next step
Get Started with pify
Step-by-step setup guide with code examples and common gotchas.