Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Markd

Markd by 173p

Automatically generates YouTube chapters from descriptions, comments, and SponsorBlock timestamps with auto-fixing of invalid formats

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Markd adds visual chapter/timestamp markers to YouTube's progress bar for instant video navigation.

✨ KEY FEATURES

• Automatic Chapter Detection
Finds chapters from SponsorBlock community database, video descriptions, and user comments

• Custom Timestamps
Paste your own chapters from anywhere
Supports: "0:00 Title", "[0:00] Title", "00:00 - Title"

• Visual Progress Bar
Color-coded segments show all chapters at a glance

• Keyboard Shortcuts
CTRL+ARROWS to navigate chapters

• Smart & Clean
Auto-validates timestamps & Removes duplicates
Seamless YouTube integration

🔒 PRIVACY FIRST

✓ No tracking or data collection
✓ No ads
✓ Custom timestamps stored locally only
✓ Open source and transparent

🌟 Perfect for students, researchers, content creators, and anyone who values efficient video navigation.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for sites in the youtube.com domain

Optional permissions:

  • Access your data for sites in the youtube.com domain

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
Version
1.0.1
Size
386.07 kB
Last updated
7 days ago (18 Mar 2026)
Related Categories
  • Web Development
  • Photos, Music & Videos
  • Games & Entertainment
Licence
MIT Licence
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike Licence v3.0 or any later version.