ChatGPT Prefixer (Overlay) icon

ChatGPT Prefixer (Overlay)

by rbtree0303@gmail.com · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 17 Oct 2026

Always prefill ChatGPT input with a configurable prefix. Overlay toggles above the composer.

Users
3
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#339K
#264K among extensions
Version
1.1.4
updated 13 Aug 2025

Users

monthly, 14 months
023Aug 2025Apr 2026Oct 2026
Latest, 17 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 14 months
001Aug 2025Apr 2026Oct 2026
Latest, 17 Oct 2026: 0 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 ChatGPT Prefixer (Overlay)

Always prefill ChatGPT input with a configurable prefix. Overlay toggles above the composer. After GPT-5 release, using "Think hard" in front of the prompt triggers thinking mode, but user do not want to be bothered to type that everytime. This extension helps user in that way

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days+1+50.0%00.00
6 months+3–00.00
1 year+3–00.00

Version history

1 versions recorded
1.1.413 Aug 2025

Details

Category
Tools
First seen
13 Aug 2025
Size
1.6 MB
Languages
en
Pricing
Free
Extension ID
cbjhgbfapckckknbifkedkggemplkhej

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
storage
Site access
https://chatgpt.com/*https://chat.openai.com/*

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