Who should use GPTPromptMaster?

GPTPromptMaster is a consumer product built for chatGPT users who want reusable prompt customization.

Is GPTPromptMaster free?

Yes — GPTPromptMaster is free to use.

What platforms does GPTPromptMaster run on?

GPTPromptMaster runs on the web and embeddable surfaces.

Is GPTPromptMaster still active?

Unverified. GPTPromptMaster has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to GPTPromptMaster?

Similar projects tracked by PulseGate include ChatGPT Prompt Library, Popup Chat GPT, and ChatGPT Prompt Folder.

Who makes GPTPromptMaster?

GPTPromptMaster is developed by mcfrank.

How long has GPTPromptMaster been around?

GPTPromptMaster first shipped in 2023.

Back to the index

GPTPromptMaster

Name: GPTPromptMaster
Author: mcfrank

mozilla.orgWriting & editing

GPTPromptMaster is a Firefox extension that lets users create custom preprompts and postprompts for ChatGPT. It adds reusable prompt customization to ChatGPT conversations through browser permissions for chat.openai.com.

FreeWebEmbeddable

Visit mozilla.org

1alternative

5features

2023since

Overview

5 features

In the Writing & editing space, GPTPromptMaster takes a focused approach. It focuses on customizing ChatGPT conversations with reusable instructions before and after prompts. It is built as a consumer product for chatGPT users who want reusable prompt customization. It is available for free. GPTPromptMaster is available on the web and embeddable surfaces.

It is developed by mcfrank, and it first shipped in 2023. Among its 5 catalogued features are preprompts, postprompts, and chatGPT integration. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Preprompts
Postprompts
ChatGPT integration
Prompt customization
Firefox extension

Built with & integrations

AI providers

openai

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed19 Sep · 11:25 UTC
GPTPromptMaster verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about GPTPromptMaster

What does GPTPromptMaster do?: GPTPromptMaster focuses on customizing ChatGPT conversations with reusable instructions before and after prompts. It is catalogued under Writing & editing on PulseGate.
Who should use GPTPromptMaster?: GPTPromptMaster is a consumer product built for chatGPT users who want reusable prompt customization.
Is GPTPromptMaster free?: Yes — GPTPromptMaster is free to use.
What platforms does GPTPromptMaster run on?: GPTPromptMaster runs on the web and embeddable surfaces.
Is GPTPromptMaster still active?: Unverified. GPTPromptMaster has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to GPTPromptMaster?: Similar projects tracked by PulseGate include ChatGPT Prompt Library, Popup Chat GPT, and ChatGPT Prompt Folder.ChatGPT Prompt Library Popup Chat GPT ChatGPT Prompt Folder
Who makes GPTPromptMaster?: GPTPromptMaster is developed by mcfrank.
How long has GPTPromptMaster been around?: GPTPromptMaster first shipped in 2023.

At a glance

Pricing: Free
Platforms: Web
Built for: ChatGPT users who want reusable prompt customization
Model: B2C
Solves: Customizing ChatGPT conversations with reusable instructions before and after prompts.

Registered as

Firefox Add-ons: gptpromptmaster

Developer

mcfrank

Index record

Indexed: 19 Sep 2026
Lifecycle: Alive
Last seen: 19 Sep 2026

Identity audit (13)

Slug: gptpromptmaster-mozilla-org
Lifecycle state recorded: 19 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 19 Sep 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 19 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/gptpromptmaster

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