Time Travel

Name: Time Travel
Rating: 5 (5 reviews)
Author: Christian Pulvermacher

Fake the current date, time and time zone in JavaScript Date or Intl.DateTimeFormat objects. Time Travel helps you debug time-dependent frontend applications without having to change the system time.

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Features & Capabilities

Time Travel is a Chrome extension that lets you fake the current date, time and time zone for JavaScript Date and Intl.DateTimeFormat objects in a single tab. Open the tab you want to test, click the extension, pick or type a date/time, and enable the fake date. Only the current tab and origin are affected, and the clock will run forward from the configured time or can be stopped with the Stop Clock toggle.

Features include full faking of all Date and Intl.DateTimeFormat methods, optional time zone changes with DST support (experimental), the ability to stop/resume time, and an option to auto-reload the page after changing the date. Limitations: only JavaScript is affected, some animations may behave oddly if time is stopped, and it won't work inside sandboxed iframes. Time Travel is open source (MIT) — contributions, issues and PRs are welcome on GitHub.

User Growth & Download Statistics

Add-on Developer Tools Programming Open Source

By:

Christian Pulvermacher

Daily users:

873 -11

Rating:

5.00

(5)

Version:

2.5.1 Last updated: 2026-06-20

Version code:

6315359

Creation date:

2023-11-27

Risk:

Permissions:

Content scripts matches:

Size:

122.53KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 3,567 ▼ 25

Other rankings

#1 in travel keyword 34

#21 in airtime keyword 0

#59 in date keyword 13 ▼ 1

#82 in javascript keyword 45

#88 in timer keyword 34 ▲ 1

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Christian Pulvermacher

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/timetravel/

Website:

https://github.com/cpulvermacher/time-travel

Permission Change History

2025-06-21: Version 2.1.1 → 2.2.0

Add Permissions: storage

User Reviews

︎︎︎︎

by *****, 2026-04-17

by Jo*****, 2026-01-20

by Ni*****, 2025-10-08

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Is Time Travel Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Time Travel requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Time Travel is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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