Custom UserAgent String icon

Custom UserAgent String

by Grephy · Developer Tools
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Add a custom useragent string for desired URLs or domains.

Users
30K
0 in 30 days
Rating
3.8 / 5
unchanged in 30 days
Ratings
37
0 in 30 days
Store rank
#4,873
#4,226 among extensions
Version
0.2.5
updated 10 Jun 2026

Users

monthly, 3 years
10K25K40KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 30,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
102437Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 37 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Custom UserAgent String

Custom UserAgent String is an extension that enables you to easily change your browser's user-agent by adding site-specific user-agent strings from the Options page. Some features: 1. Add a custom user-agent string for each URL or website (domain). 2. There is an option to change each URL to a domain from the options page. 3. Toolbar popup has an ON or OFF switch button (left side). 4. User agents can be added to the options page (more than 100 sample user-agent strings are also provided). 5. For each user-agent string, you can either delete or disable it for future use. 6. To find a user-agent string you can either use a search engine (there are plenty of websites that provide a free UA list) or use the sample list provided on the addon's options page. This list includes more than 100 UAs for modern browsers and ranging from desktop to mobile platforms. This list is also available on the addon's homepage, FAQ section. Note: to report bugs, please visit the addon's homepage (https://mybrowseraddon.com/custom-useragent-string.html) and fill out the bug report form.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%+1+0.03
1 year0+0.0%+3−0.01

Chrome Web Store search rankings

Where Custom UserAgent String appears when people search the store, with the 30 day change
Search phrasePosition30 days
string#10
agent#40+13

Version history

6 versions recorded
0.2.510 Jun 2026
0.2.48 Apr 2025
0.2.320 Feb 2024
0.2.27 Apr 2022
0.2.124 Sep 2020
0.1.927 Jul 2019

Details

Category
Developer Tools
First seen
27 Jul 2019
Size
491 KB
Languages
en
Pricing
Free
Support
mybrowseraddon.com
Extension ID
lejiafennghcpgmbpiodgofeklkpahoe

Permissions and risk

Low riskimpact 2, likelihood 1
Permissions
storagedeclarativeNetRequest
Site access
*://*/*ws://*/*wss://*/*
Can read and change data on every website you visit.

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