Back up your Perplexity library before deleting threads (2026)
Perplexity lets you delete single threads, whole Spaces/Projects, or everything via Library → three dots → Delete all threads. Perplexity states this cannot be undone. Back up first.
1. Request your data export
Start Perplexity's self-serve data export from your account settings so a full copy is on its way while you do the rest.
2. Export the threads you'll want again
Open each important thread → three dots (left of Share) → Export as Markdown (or PDF/DOCX). Save into a dated folder such as perplexity-backup-2026-10/.
3. Save Project/Space instructions and files
Copy each Project's instructions into a text file and make sure you still have your original uploaded files. See backing up Spaces (Projects).
4. Verify the backup
Open a few files and check the answers and source links are intact. Only then delete.
5. Delete
- One thread: Library → three dots beside it → Delete.
- A Space/Project: open it → three dots by the title → Delete.
- Everything: Library → three dots top right → Delete all threads.
Related guides
- How to export all your Perplexity threads (2026)
- How to back up Perplexity Spaces (now Projects)
- How to export your Perplexity history as JSON (2026)
- How to find and search old Perplexity threads (2026)
Not affiliated with Perplexity AI. Last checked October 2026; Perplexity features change, so verify in the app.