Substack has become the home for independent writers, analysts, and journalists. But newsletter content is ephemeral --- it sits in your inbox or behind a paywall, hard to search and easy to lose. Here’s how to save Substack posts as clean Markdown.

Why Save Substack Newsletters as Markdown?

Newsletter content has unique challenges:

Buried in email --- important essays get lost in your inbox
No search across newsletters --- can’t search across multiple Substack authors
Paywalled content --- paid posts aren’t easily accessible later
No offline access --- web posts require internet

Saving to Markdown creates a personal, searchable newsletter archive.

What Save Captures from Substack

Post Content

Full article text with formatting
Headings and subheadings
Block quotes and pull quotes
Images and captions
Embedded links
Footnotes

Metadata

Post title
Author name
Publication date
Newsletter name

Example Output

# Why Every Developer Should Write

**Author:** Sarah Chen
**Newsletter:** The Developer's Playbook
**Published:** March 15, 2026

---

Writing is the most underrated skill in software engineering.
Not documentation. Not commit messages. I mean writing for
an audience outside your team...

## The Compound Effect of Publishing

When you publish consistently, three things happen:

1. **You clarify your thinking** — writing forces precision
2. **You build a network** — readers become collaborators
3. **You create leverage** — one article can reach thousands

> "The best time to start writing was five years ago.
> The second best time is today."

Use Cases

Building a Reading Library

Save the best newsletters across all your subscriptions
Organize by topic, not by author or publication date
Create a personal knowledge base from newsletter insights

Research and Writing

Collect expert perspectives on a topic
Save data points and analysis from industry newsletters
Build source material for your own content

AI-Powered Learning

Feed saved newsletters to AI for summaries and synthesis
Ask Claude to compare perspectives across multiple authors
Extract key insights from months of newsletter content

Archiving Paid Content

Save paid newsletter posts you’ve already accessed
Build an offline archive of your paid subscriptions
Never worry about losing access if you unsubscribe

Tips for Best Results

Open the web version --- save from the Substack website, not the email
Works on paid posts --- if you can see it in your browser, you can save it
Comments excluded --- Save extracts the article, not the comment section
Podcast show notes --- for Substack podcasts, saves the show notes and transcript if available

Get Started

Install Save from the Chrome Web Store --- build your newsletter archive.

Have questions? Reach out at [email protected]