GrumpToolsUtility
A dead link or an expired sponsor buried in 200 video descriptions is hours of clicking in YouTube Studio. Connect your channel, define the change once, review a side-by-side diff of every affected video, and apply it in one pass through the official YouTube API.
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Case-insensitive find and replace across every selected description; leave the replacement blank to delete the text.
Add a new sponsor block, social link, or announcement to the top or bottom of every description.
Before anything is written, see current and new descriptions side by side for every video that would change.
The tool spots description lines shared across your videos and selects the videos that carry them in one click.
Videos that would exceed YouTube's 5000-character description limit are flagged and skipped, and the apply runs against live descriptions, not a stale cache.
A one-time YouTube connection authorizes the edits.
Pick replace, append, or prepend, select videos (search and filters help), and review the per-video diff.
Confirm, and the change rolls out to every selected description in one pass.
Yes. The preview shows a side-by-side diff for every video that would actually change, and only those; videos with no matches are left out.
Yes. Edits run through YouTube's official Data API on a channel you connect and authorize, the same mechanism professional channel-management tools use.
There is no automatic undo, which is exactly why the preview exists. A find-and-replace can often be reversed by running the inverse replacement.
Pro includes one run per day of up to 40 videos; Premium runs up to 100 per pass. Selecting nothing applies the edit to every video, as long as your channel has no more than that. The limit is YouTube's own daily API budget, shared across everyone using GrumpTools. If it runs out you get a clear message and a count of what's left, not a half-finished batch.
Included with Pro ($9.99/month) and above.