Chrome extension Β· runs locally

Export complete Substack threads, including nested replies.

Turn chats and posts into clean JSON, CSV, or Markdown with full thread depth, preserved reply chains, and output that is actually usable for research, archiving, and AI workflows.

Free plan available Β· No account required Β· Uses your existing browser session

substack.com/chat
The Generalist Chat
M
Mario G.2h ago
πŸ”₯ 4
This is the part most export tools miss.
S
Sarah K.1h ago
πŸ‘ 2
They capture the post, but not the discussion.
J
James R.58m ago
And that's where the real value usually is.
A
Alex T.34m ago
πŸ’‘ 7
Same problem with newsletter comments β€” you lose the whole thread.
R
Rachel M.21m ago
Exactly why I needed a proper export tool.
Stackscraper
Substack chat detected
47 posts
312 replies
Export format
JSON
CSV
MD
Options
Include thread replies
Clean output mode
Resume from last export
thread_export.json
{"posts":[{"author":"Mario G.","text":"This is the part most export tools miss.","replies":[{"author":"Sarah K.","text":"They capture the post, but not the discussion.","replies":[{"author":"James R.","text":"And that's where the real value usually is."}]}]}]}
βœ“Exports chats, posts, replies, and sub-replies
{ }JSON, CSV, and Markdown output
β†ΊAbility to resume from your last export
πŸ”’Runs in your browser with your existing session
The problem

Most exports miss the part you actually care about.

Substack conversations live inside reply chains, not just top-level posts. Most tools stop at the surface, skip nested replies, or export incomplete data that is hard to search, analyze, or feed into AI tools.

  • βœ•No export memory means re-exporting everything from scratch every single time.
  • βœ•Replies are missing, so threads become fragments instead of conversations.
  • βœ•Sub-replies are ignored, which breaks hierarchy and meaning.
  • βœ•Output is often messy, shallow, or limited to a single format.
  • βœ•The result is hard to archive, review, or use with AI.

Built for complete capture and usable output.

Stackscraper is not just a scraper. It is an export utility built for people who need the whole thread and a clean file at the end.

Complete capture

Export top-level posts, reply chains, nested replies, and full history without flattening the conversation into useless fragments.

Usable output

Choose JSON for programmatic work, CSV for spreadsheets, or Markdown for reading, archiving, and pasting into AI tools.

Local processing

Runs with your existing browser session and processes exports locally, so you do not need to create another account to get started.

Remembers where you left off

Stackscraper saves your last export point. Next time, skip everything you have already captured and export only what is new.

Three steps. No setup spiral.

Install the extension, open the page you want, and export the thread in the format you need.

01

Install the extension

Add Stackscraper to Chrome and open the publication page you already have access to.

02

Open a chat or post

Navigate to the Substack page you want to export. Stackscraper uses your current browser session.

03

Export your file

Select JSON, CSV, or Markdown and download a structured export with preserved reply depth.

Made for power users, not casual browsing.

The value is highest when the export itself matters.

Researchers

Archive entire conversations and preserve the context that lives inside reply chains.

Analysts

Turn chats and posts into structured files that can be searched, sorted, and compared.

AI workflow users

Feed Markdown or JSON exports into notebooks, RAG pipelines, or other downstream tools.

Writers and creators

Back up paid or private discussions you already have access to in a readable format.

Start free. Upgrade when the workflow becomes recurring.

Low-friction entry, with a paid tier for people who need ongoing exports.

Free
$0/month
Try the product before paying
  • βœ“10 exports per month
  • βœ“JSON, CSV, and Markdown
  • βœ“Nested replies included
  • βœ“Clean output mode
  • –Unlimited exports
  • –Starts fresh each time
  • –Priority support

License key delivered by email Β· Activate in the extension Β· Cancel anytime

Common questions.

Does it work on paid or private Substack chats?

It uses your existing browser session, so it can export pages you can already access in your browser.

What does clean output mean?

Clean mode is designed to make exports easier to read and easier to use in AI tools, archives, and spreadsheets.

Does Stackscraper send my export through a server?

The page is positioned around local processing in your browser, which is one of the main trust advantages of the product.

Can I use the output with AI tools?

Yes. Markdown and JSON are especially useful when you want to search, summarize, or analyze thread data with downstream tools.

Why pay instead of using a one-off script?

Simple scripts do not remember where you left off, survive site changes, or produce clean output. Stackscraper does all three and stays maintained.

Can I export only new posts since my last export?

Yes, on Pro. Stackscraper saves your last export point and lets you resume from there on the next run, so you never re-export content you already have.

Export full Substack threads without losing the replies.

Try Stackscraper free in under 30 seconds.