Free YouTube Description Generator

AI YouTube Description Generator — Free, Private, On-Device

DescriptionCraft writes complete YouTube descriptions using a built-in AI model that runs entirely on your computer. No subscription, no API key, no data leaving your machine. vidIQ and TubeBuddy charge up to $17/month for AI description generation. DescriptionCraft does it free, offline, with nothing leaving your device.

What it generates

Enter your video title and DescriptionCraft produces a full YouTube description following VidIQ best practices — a hook in the first 125 characters (critical for search preview), natural keyword placement, a call-to-action, and a social links section. Everything structured and ready to paste.

What you get

Hook optimised for the first 125 characters — what YouTube shows in search results
Natural keyword integration throughout
Call-to-action and social links section included
Built-in Llama 3.2 3B — downloads automatically on first launch (~2.6 GB)
Runs 100% on-device — your content stays private
Free for Mac, Windows, and Linux

Free Desktop Tool

Get DescriptionCraft

Make better decisions faster with structured AI-driven reasoning.

Runs locally
No cloud upload
Free download

Choose your platform

Download for Mac
Download for Linux
Download for Windows

How to install DescriptionCraft

Mac
Download the .dmg file, open it, and drag DescriptionCraft to your Applications folder. On first launch the app downloads the AI model (~2.6 GB) — keep your internet connection active until that completes. After that it runs offline. Apple Silicon Macs automatically use Metal GPU acceleration for faster generation.

Windows
Download the .exe installer and run it. Windows may show a SmartScreen warning — click “More info” then “Run anyway”. The AI model downloads automatically on first launch.

Linux
Download the .AppImage, make it executable (chmod +x DescriptionCraft*.AppImage), and run it. A .deb package is also available for Debian/Ubuntu systems.

Already have TitleCraft or TagCraft?
All three apps share the same AI model file. If you already installed one of them, DescriptionCraft will find and reuse it — no 2.6 GB re-download.

Frequently asked questions

Is it really free?
Yes. No paywall, no subscription.

Does it need an internet connection?
Only once, to download the AI model (~2.6 GB) on first launch. Fully offline after that.

Is my content private?
Completely. The model runs on your device and nothing leaves your machine.

Why the description is more than a summary

The first 125 characters are your search snippet. YouTube shows this in search results before the “Show more” cutoff — it’s your ad copy, not an afterthought.

Descriptions are one of YouTube’s top three ranking signals alongside title and tags. Natural keyword placement throughout the full description helps YouTube understand and surface your video.

Hootsuite, VidIQ and VEED charge for structured description generation. DescriptionCraft follows the same best-practice structure — free, offline, no account needed.

Example output — video: “how to edit YouTube videos fast”

Generated description structure

Hook (first 125 chars): Cut your editing time in half with the exact workflow I use for every upload — no expensive software, no wasted hours.

Body: In this video I walk through my full fast-editing workflow for YouTube — covering timeline organisation, keyboard shortcuts, and the trim-first method that saves 2–3 hours per video…

Keywords: how to edit YouTube videos, YouTube editing tips, fast video editing, video editing workflow…

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