tamperextscripts

Export your AI chats and run your own userscripts, in modern Chrome, without sending anything to a third party.

• Website and docs: https://handyutils.github.io/tamperextscripts/
• Community scripts: https://handyutils.github.io/tamperextscripts/#registry

What it does

1. Chat exporters. Save a conversation as Markdown, JSON, HTML, or plain text, copy it, or export all of your chats. Supported sites: ChatGPT, Claude (including Cowork sessions), Gemini, Grok, Mistral Le Chat, DeepSeek, Qwen, and Z.ai.
2. Userscript manager. Install your own .user.js scripts or community scripts from a registry. Each registry entry is pinned by SHA-256, so a changed file is refused.

Install

The extension (manager and ChatGPT exporter)

1. Download tamperextscripts-<version>.zip from the latest release, or from the website.
2. Unzip it to a folder you'll keep. Chrome loads the extension from there.
3. Open chrome://extensions, turn on Developer mode, click Load unpacked, and choose the folder.
4. On the extension's details page, turn on Allow User Scripts.

An exporter userscript

Each site's exporter is a standalone userscript in community-scripts-registry/<site>chatsexporter/. Install one with either tool:

• Tampermonkey: open the .user.js file from the website's download button, then click Install.
• The extension: open its options page, choose the file, and press Install.

Install one copy of each script. Two copies of the same exporter show two Export buttons.

Use

Open a chat on a supported site and click Export in the bottom-right corner, then choose a format. Export all saves every chat in your account to one JSON file, and the status line shows progress.

Only the visible conversation is exported. Reasoning, tool calls, and hidden messages are left out.

Repository layout

Path	What it is
extension/	The Manifest V3 extension: manager, options page, ChatGPT exporter. Source in src/, tests in test/.
extension/src/providers/	One adapter per site. Each adapter talks to that site's own web API with the signed-in session.
community-scripts-registry/	Generated userscripts for the exporters.
registry/index.json	The community registry index that the extension and website read.
website/	The documentation site, deployed to GitHub Pages.
specs/	Feature specifications and their status.
docs/	Roadmap and the legacy Tampermonkey 2.9 README.
build_sys/, src/, server/	The original Tampermonkey 2.9 source, kept as provenance. Not used by the extension.

Develop

cd extension
npm install
npm test                  # unit tests
npm run build             # extension in dist/
npm run build:userscripts # regenerate community-scripts-registry/
npm run build:registry    # regenerate registry/index.json (run after script changes)

cd ../website
npm install
npm run build             # also packages the extension zip and copies the userscripts

After changing a userscript, run build:registry and commit the scripts and the index together. The registry checks each file against its SHA-256, so a stale index refuses the new file.

Adding a site or a community script

• A site exporter: add an adapter in extension/src/providers/, a normalizer with tests, and a build target in extension/scripts/build-userscripts.js.
• A community script: put the .user.js file in a folder under community-scripts-registry/, then run npm run build:registry.

Status and limits

• The ChatGPT, Claude, Mistral, DeepSeek, and Grok exporters have been tested against logged-in accounts. Gemini, Qwen, and Z.ai were tested on the same basis, but are newer.
• Site APIs are undocumented and can change. If an export fails, check the status line under the buttons, then open an issue.
• The Screenshot export is not implemented.

Licence and provenance

GPL-3.0. The extension and exporters are original work. build_sys/, src/, and server/ are the GPL-licensed Tampermonkey 2.9 source, kept for reference, and are not part of the extension. Newer proprietary Tampermonkey code is not used.