YouTube description generator: write better descriptions with AI (and keep them updated)

Quick answer: A YouTube description generator uses AI to write a clear, search-friendly description from your video's title, topic, or transcript. It saves real time — but the description it writes is a first draft you should review, and generating the text is only half the job. The other half is keeping descriptions updated across your whole channel as links, sponsors, and offers change. Description Modifier does both: AI rewrites, translations, and chapter generation, plus true find-and-replace to maintain every description afterward.

Why descriptions are worth the effort

Your description helps YouTube and Google understand what your video is about, and its first lines appear in search results. It is also where your links live: sponsors, affiliate offers, your store, your newsletter. A weak or outdated description costs you twice — once in discoverability, and again in clicks that go nowhere useful.

The problem is that writing a good description for one video is easy, but writing them for a catalog of 50, 100, or 300 videos is a project. That is exactly where an AI description generator earns its keep.

How to get good output from a description generator

1. Give it real material. The best input is your video's transcript. Description Modifier can generate chapters from transcripts, and transcript-grounded output is far more accurate than a guess based on a title alone.
2. Front-load the summary. Make sure the first 150 characters say what the video is and who it is for — that is the text viewers see in search before clicking.
3. Keep your links and disclosures. AI should refresh the wording around your links, not remove them. Check that sponsor URLs, affiliate links, and any required disclosure wording survived the rewrite.
4. Review before applying. Names, claims, and timing can be wrong. Description Modifier shows a line-by-line preview of every change and keeps an undo snapshot for each batch, so nothing goes live unseen.

What a generator can't do: maintenance

Here is the part most description tools skip. A generator writes text for one video at a time. But six months later, when a sponsor changes its landing page or an affiliate program closes, that URL is sitting in the middle of dozens of descriptions. Generating new descriptions from scratch is the wrong fix — you need to find the old text and replace it.

YouTube Studio's bulk edit can only add or remove text at the very beginning or end of descriptions. It cannot find one specific link or sentence wherever it appears. Description Modifier's true find-and-replace searches the complete description text across your channel and swaps exactly what you approve — which is what makes AI-generated descriptions practical to maintain long-term.

A complete description workflow

• Audit first. Run the broken-link scanner and the affiliate disclosure checker so you know what needs fixing before you rewrite anything.
• Fix links in bulk. Replace outdated URLs and add missing disclosures with find-and-replace.
• Refresh with AI. Rewrite stale descriptions, translate them for new audiences, and generate chapters from transcripts.
• Preview and apply. Check every batch line by line, then apply it — with undo available if anything looks wrong afterward.

What it costs

The extension is free to install and includes free bulk edits. AI tools — rewrites, translations, and chapter generation — are part of Pro AI at $19/month or the Agency plan. If you only need one cleanup day, the $5 Day Pass unlocks every Pro AI feature for 24 hours, one time, with nothing to cancel.

Ready to fix your descriptions? Install Description Modifier for Chrome — free bulk edits, no card required. AI tools start with the $5 Day Pass.