A Source is anything you bring into Gistr to learn from. The starting point.<table style="minWidth: 50px"><colgroup><col><col></colgroup><tbody><tr><td colspan="1" rowspan="1"> Type</td><td colspan="1" rowspan="1"> What you can add</td></tr><tr><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Video</td><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">YouTube video URLs, YouTube playlist URLs</td></tr><tr><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Audio</td><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Apple Podcasts URLs, Spotify episode URLs</td></tr><tr><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Documents</td><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">PDF, DOCX, PPTX, TXT, Markdown files</td></tr><tr><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Web</td><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Any public web article, blog, or documentation URL</td></tr><tr><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Coming soon</td><td colspan="1" rowspan="1" style="box-sizing: border-box; padding: 0.5em 1em !important; border: 1px solid rgb(210, 210, 215);">Audio file uploads (MP3 etc.), image uploads</td></tr></tbody></table>Every Source you add is also visible in your (( Sources tab )) — a global library of everything you've ever brought into Gistr.

Sources: What You Learn From

Arun Antony

Why we built this, and the thinking behind how it works.

Our Thinking

Philosophy

Everything you need to go from zero to your first Thread.

Getting Started

What is Gistr?

Gistr 101

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Platform Guides

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Core Concepts

Threads: Where You Think

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How to bring any type of content into Gistr.

Adding Sources

YouTube Videos and Playlists

Podcasts (Spotify and Apple)

PDFs and Documents

Web Articles, Blogs, and Docs

Clip with the Chrome Extension

Supported Formats and File Limits

Your knowledge workspace for thinking & learning.

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The active chat — questions, multi-source synthesis, follow-ups, and editing.

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Features that run in the background or with one click — no prompting required.

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Everything you've ever added, always findable.

Your Library

The Sources Tab

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Take your work out of Gistr or share it with someone else.

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Type	What you can add
Video	YouTube video URLs, YouTube playlist URLs
Audio	Apple Podcasts URLs, Spotify episode URLs
Documents	PDF, DOCX, PPTX, TXT, Markdown files
Web	Any public web article, blog, or documentation URL
Coming soon	Audio file uploads (MP3 etc.), image uploads