ThreadKeep
Leaving Slack?
Keep your exported conversations readable.
Turn an authorised Slack public-channel JSON export ZIP into searchable offline HTML. Find supported messages with their replies in context, locally in your browser.
No Slack connection, content upload or AI processing. Initial support: desktop Chrome on Windows.
Public-channel exports only. Up to 25 MiB per source ZIP and 25,000 included messages, with additional published limits. Review compatibility warnings before buying.
1. Check an existing export
You supply an authorised standard public-channel JSON export. The free local checker reports supported counts, dates and omissions before purchase.
2. Search with context
The converter groups supported threads across date files. Find message text and people; browse channels, timestamps and reactions.
3. Save one HTML file
Download the archive and open it in your browser offline. Protect the readable file as carefully as the source messages.
Attachment links, not attachment files.
Supported message text and attachment links are kept. Photos, PDFs and other attachment files are not fetched or bundled. Links can expire or require Slack access.
No deleted-message recovery, complete-backup guarantee or compliance guarantee. Review compatibility warnings and retain your original export.
A small, explicit scope.
Up to 25 MiB per source ZIP and 25,000 included messages, with additional expansion and record limits. Rich layouts and unsupported records are counted in the compatibility report.
See all limits and check a ZIP · Read how local processing works