tz-format
Format dates with timezone information in JavaScript.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is tz-format?
A lightweight JavaScript library to format date strings with timezone details. Useful for developers needing precise time and timezone representation in their applications.
Key differentiator
“tz-format offers a straightforward solution for adding timezone information to date strings, making it an ideal choice for developers who need simple and precise date-time representation without the overhead of larger libraries.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
The tool is primarily designed for JavaScript, limiting its utility in polyglot environments.
The official documentation lacks comprehensive examples and detailed explanations of edge cases.
When formatting a high volume of date strings, the library can become slow and resource-intensive.
The open-source project has limited contributors and infrequent updates, leading to slower issue resolution and feature development.
Fit analysis
Who is it for?
✓ Best for
JavaScript developers who need to format date strings with timezone information for their applications.
Projects requiring clear and accurate representation of dates and times across different regions.
✕ Not a fit for
Applications that require complex time zone conversions or calculations beyond formatting.
Scenarios where a full-fledged date/time library is necessary due to extensive functionality requirements.
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 tz-format
Step-by-step setup guide with code examples and common gotchas.