tz-format
Format dates with timezone information in JavaScript.
- Status
- UnmaintainedNo commits in 3611 days.
- Last checked
- Checked · Oct 13, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
A lightweight JavaScript library to format date strings with timezone details. Useful for developers needing precise time and timezone representation in their applications.
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.
When it fits — and when it doesn’t
A good fit 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.
Look elsewhere if
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.
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited language support
The tool is primarily designed for JavaScript, limiting its utility in polyglot environments.
- 02
Poor documentation
The official documentation lacks comprehensive examples and detailed explanations of edge cases.
- 03
Performance issues with large datasets
When formatting a high volume of date strings, the library can become slow and resource-intensive.
- 04
Small community support
The open-source project has limited contributors and infrequent updates, leading to slower issue resolution and feature development.
What it does well
Simple and lightweight for date formatting with timezone support.
Easy to integrate into existing JavaScript projects.
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up tz-format
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for tz-format’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
Markdown
[](https://navigateaitools.com/explorer/tool/tz-format)HTML
<a href="https://navigateaitools.com/explorer/tool/tz-format"><img src="https://navigateaitools.com/badge/tz-format.svg" alt="tz-format — tracked on AI Navigator" height="58"></a>