is-online
Check if the internet connection is up with this lightweight utility.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is is-online?
is-online provides a simple way to check for an active internet connection in your Node.js applications. It's useful for ensuring that network-dependent features only run when connectivity is available, enhancing user experience and reliability.
Key differentiator
“is-online stands out as a minimalist and dependency-free tool for checking internet connectivity in Node.js applications, making it ideal for projects that need simplicity without sacrificing functionality.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
is-online only checks basic internet connectivity and does not support advanced features like checking specific URLs or handling different types of network errors.
The tool lacks a native retry mechanism for intermittent connection issues, which may require additional custom implementation by the user.
In environments where proxies are used, is-online does not provide automatic handling or configuration options to ensure accurate connectivity checks.
Fit analysis
Who is it for?
✓ Best for
Developers building Node.js applications that require network checks for feature availability.
Teams needing a lightweight solution for checking internet connectivity without external dependencies.
✕ Not a fit for
Projects requiring complex network diagnostics beyond simple connectivity checks.
Applications where the overhead of an additional library is undesirable, even if minimal.
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
Integrations
Next step
Get Started with is-online
Step-by-step setup guide with code examples and common gotchas.