nCena

Replaces 1% of web images with John Cena

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nCena is a playful Chrome extension designed to prank users by replacing just 1% of web images with pictures of John Cena. Unlike other image-replacement tools that swap every image, nCena strikes the perfect balance—creating a subtle and long-lasting prank that keeps your friends guessing without raising immediate suspicion.

This extension is ideal for those who want to infuse a bit of humor into their browsing experience or play gentle pranks on others. With nCena, expect an occasional unexpected John Cena appearance that adds fun and mystery to any website you visit.

Extension Entertainment Productivity Social Media

By:: Ash A.
Users:: 855 -61
Rating:: 4.64

(14)
Version:: 1.01 Last updated: 2017-12-31
Creation date:: 2017-12-30
Risk:: Low risk impact Low risk likelihood
Size:: 43.68KB
Full description:: See detailed description
Source:: Chrome Web Store
Data ingested on:: 2025-07-11

Ranking

# 31,400 ▼ 744

Other rankings

#7198 in Just for Fun ▼ 27 #122 in replace keyword 22 ▼ 4 #272 in picture keyword 31 ▼ 15

User reviews

Pros

Fun and entertaining
Works as described
Brings joy and laughter
Great for pranks
Nostalgic for some users

Cons

Might be considered childish
Limited functionality beyond humor

Recent reviews

really useful

Yi*****, 2024-06-27

I works like it says. I mean what more do you what

No*****, 2023-09-17

this is great

Ca*****, 2023-06-30

View all user reviews ›

Extension safety

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.

nCena requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.

Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

nCena has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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