AppNexus Test Header icon

AppNexus Test Header

by William Macdonald · macscan.net · Developer Tools
Established publisherManifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Enable Test Mode Ads when developing site that use AppNexus/Xandr ads. This extension adds the 'X-Is-Test:1'.

Users
53
−2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#106K
#89K among extensions
Version
1.0.1
updated 10 Nov 2022

Users

monthly, 3 years
64073Aug 2023Apr 2025Oct 2026
Latest, 16 Oct 2026: 53 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
001Aug 2023Apr 2025Oct 2026
Latest, 16 Oct 2026: 1 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 AppNexus Test Header

Enable Test Mode Ads when developing site that use AppNexus/Xandr ads. The extension adds the 'X-Is-Test:1' HTTP header to all network being sent to adnxs.com and adnxs-simple.com. This is an un-official plugin which replaces the recently removed official plugin. It does not gather, store or send any personal information.

Growth

WindowUsersChangeRatingsRating
7 days−1−1.9%00.00
30 days−2−3.6%00.00
6 months−4−7.0%00.00
1 year−5−8.6%00.00

Chrome Web Store search rankings

Where AppNexus Test Header appears when people search the store, with the 30 day change
Search phrasePosition30 days
header#99new

Version history

2 versions recorded
1.0.19 Nov 2022
1.0.015 Dec 2021

Details

Category
Developer Tools
First seen
15 Dec 2021
Size
23 KB
Languages
en-GB
Pricing
Free
Privacy policy
macscan.net
Extension ID
fjpjmognfiejglbmabgkmlldeinedbdg

Permissions and risk

Low riskimpact 2, likelihood 1
Permissions
declarativeNetRequest
Site access
<all_urls>
Can read and change data on every website you visit.

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