Keep the parts of a ChatGPT conversation that matter.
Select individual prompts and answers, copy or download clean Markdown for free, or export searchable PDF files and PNG images with ChatMark Pro. Conversation content is processed locally in your browser.
One conversation, your selection
Export only what you choose
Private ChatGPT conversation
Selected messages
Copying and downloading Markdown stays free. PDF and PNG share one three-day trial.
A focused exporter
A full conversation is rarely the file you actually need.
ChatMark turns a private ChatGPT thread into a deliberate document instead of a noisy copy of the page.
Three simple steps
From conversation to a useful file
Open a private ChatGPT conversation and keep control over every exported message.

Open ChatMark
Use the button beside ChatGPT's share action or the browser toolbar icon.
Choose messages
Select all, invert the selection, keep answers only, or choose messages one by one.
Export locally
Copy or download Markdown for free, or export searchable A4/Letter PDF files and PNG images with Pro.
Built for accurate exports
Preserve structure without copying the page
ChatMark reads the current conversation branch and produces files designed for editing, sharing, and archiving.
Free or Pro
Markdown stays free; upgrade for PDF and PNG
Copy and download Markdown for free. Pro adds document and image exports.
- Unlimited Markdown copying and downloads
- Message selection controls
- No ChatMark account required
- Everything in Free
- A4 and Letter PDF
- 960-pixel-wide PNG; ZIP for multiple images
- Monthly, yearly, or lifetime access
- Unlimited linked devices
Local content, scoped membership
Your conversation and your membership stay separate.
The extension processes conversation content locally. The website only handles accounts, billing, analytics consent, and revocable device entitlement.
Read the privacy policyNo conversation uploads
ChatMark membership APIs do not receive conversation text, exported files, or ChatGPT access tokens.
Scoped device credentials
The website stores only a SHA-256 device-key hash; the secret remains in browser-local storage.
Consent-based analytics
Google Analytics loads only after the visitor accepts optional analytics.
Frequently asked questions
Before you export
Turn the conversation into a file you control.
Install ChatMark, select the messages that matter, and export them locally.
Sign in