What should a ChatGPT exporter be able to do?
At minimum: export the formats you need, keep code and math readable, and process conversations without sending content to a third-party server.
Choose the output first
For reading or sending a finished document, test PDF. For notes and versioned text, test Markdown. For revision in Word, test DOCX. For your own data processing, test JSON and inspect its fields before building a script around it.
Match the scope
Saving one useful answer and archiving a project are different jobs. Check whether the tool exports the selected conversation, several conversations, or an account archive. Do not assume that support for a single-chat format also means that format works in batch mode.
In ChatShell, single-chat export supports PDF, Markdown, DOCX, and JSON. Pro batch export supports HTML, Markdown, DOCX, and JSON. Workspace exports only cover conversations your account can access.
Try the difficult parts of your own content
Use a non-sensitive sample with the kinds of tables, code, formulas, and images you normally work with. Open the exported file in its destination app and compare it with the source. Check both the beginning and the end of a long conversation.
Read the limits and data handling
Check the free quota and paid features before committing to a large export. Review what the extension can access, where files are generated, and which network requests are needed. ChatShell creates export files in the browser and does not upload conversation content to its servers; fetching content, fonts, and license validation may still use the network.