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| Filter | Status | Condition | Details |
|---|---|---|---|
| HTTP status | PASS | download_http_code = 200 | HTTP 200 |
| Age cutoff | PASS | download_stamp > now() - 6 MONTH | 0.2 months ago |
| History drop | PASS | isNull(history_drop_reason) | No drop reason |
| Spam/ban | PASS | fh_dont_index != 1 AND ml_spam_score = 0 | ml_spam_score=0 |
| Canonical | PASS | meta_canonical IS NULL OR = '' OR = src_unparsed | Not set |
| Property | Value | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| URL | https://www.3blue1brown.com/ | |||||||||||||||
| Last Crawled | 2026-04-16 13:12:53 (6 days ago) | |||||||||||||||
| First Indexed | 2017-05-18 03:19:43 (8 years ago) | |||||||||||||||
| HTTP Status Code | 200 | |||||||||||||||
| Content | ||||||||||||||||
| Meta Title | 3Blue1Brown - 3Blue1Brown | |||||||||||||||
| Meta Description | Mathematics with a distinct visual perspective. Linear algebra, calculus, neural networks, topology, and more. | |||||||||||||||
| Meta Canonical | null | |||||||||||||||
| Boilerpipe Text | Neural Networks
Linear Algebra
Calculus
Differential Equations
Puzzles
Geometry
Why Pi
Analysis
Physics
Computer Science
Fractals
Probability
Group Theory
Number Theory
Lockdown Math
Talks
Supporters get early access to new videos and make up the core inner audience that provides feedback and insights to refine the final form of these lessons.
There are other perks, including a meaningful store discount and, for the higher-tier patrons, having your name appear in the video.
Most of us find it normal to pay for textbooks and to pay (often handsomely) for courses. I believe educational videos are most valuable when they are free. Although viewers are not obligated to pay for them as they would for a textbook or course, I am very grateful for those who choose to do so anyway. | |||||||||||||||
| Markdown | [3Blue1BrownAnimated math](https://www.3blue1brown.com/)
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Neural Networks
Linear Algebra
Calculus
Differential Equations
Puzzles
Geometry
Why Pi
Analysis
Physics
Computer Science
Fractals
Probability
Group Theory
Number Theory
Lockdown Math
Talks
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Supporters get early access to new videos and make up the core inner audience that provides feedback and insights to refine the final form of these lessons.
There are other perks, including a meaningful store discount and, for the higher-tier patrons, having your name appear in the video.
Most of us find it normal to pay for textbooks and to pay (often handsomely) for courses. I believe educational videos are most valuable when they are free. Although viewers are not obligated to pay for them as they would for a textbook or course, I am very grateful for those who choose to do so anyway.
© 2026 Grant Sanderson | |||||||||||||||
| Readable Markdown | 
Neural Networks
Linear Algebra
Calculus
Differential Equations
Puzzles
Geometry
Why Pi
Analysis
Physics
Computer Science
Fractals
Probability
Group Theory
Number Theory
Lockdown Math
Talks
Supporters get early access to new videos and make up the core inner audience that provides feedback and insights to refine the final form of these lessons.
There are other perks, including a meaningful store discount and, for the higher-tier patrons, having your name appear in the video.
Most of us find it normal to pay for textbooks and to pay (often handsomely) for courses. I believe educational videos are most valuable when they are free. Although viewers are not obligated to pay for them as they would for a textbook or course, I am very grateful for those who choose to do so anyway. | |||||||||||||||
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| Publish Time | not set | |||||||||||||||
| Original Publish Time | 2017-05-18 03:19:43 (8 years ago) | |||||||||||||||
| Republished | No | |||||||||||||||
| Word Count (Total) | 195 | |||||||||||||||
| Word Count (Content) | 129 | |||||||||||||||
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| Internal Links | 6 | |||||||||||||||
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| JS Rendered | No | |||||||||||||||
| Redirect Target | null | |||||||||||||||
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| Download Time (ms) | 76 | |||||||||||||||
| TTFB (ms) | 62 | |||||||||||||||
| Download Size (bytes) | 21,136 | |||||||||||||||
| Shard | 78 (laksa) | |||||||||||||||
| Root Hash | 2122703424142777278 | |||||||||||||||
| Unparsed URL | com,3blue1brown!www,/ s443 | |||||||||||||||