Ostendo – YouTube Screenshots by Kabir

5 Stars out of 5

Ostendo – YouTube Screenshots version history - 4 versions

Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Older versions
Version 4.0.0
Released May 6, 2026 - 1.5 MB
Works with firefox 128.0 and later
Major Update: Ostendo v4.0 Released!

Faster, smoother, and more reliable across the board... plus a new Collections feature for Ostendo Pro.

What’s new for everyone:
🎨 8 new tile color options
⚡ Major performance improvements
🧠 Smarter thumbnail detection (fixes missing Tiles)
📐 Improved layout system (less overlap, better sizing)
📢 New announcement system... hello!

Introducing Ostendo Pro, your thumbnail moodboard.

Instead of downloading thumbnails and saving them to random folders on your computer, Ostendo Pro allows you to collect a thumbnail with a click, it'll be waiting for you in your Ostendo Pro dashboard!
From there you can add tags, sort, filter, and export thumbnails with ease!
Source code released under All Rights Reserved
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Latest version