How to change all your YouTube descriptions at once (2026)
YouTube Studio has no find-and-replace. Here's how to change every YouTube description at once — swap expired affiliate links, old sponsor URLs, and CTAs across your whole catalog in one run.
The question shows up in search constantly: how do I change all my YouTube descriptions at once? The frustrating answer is that YouTube Studio's built-in bulk edit can't do a true find-and-replace — it only adds or removes text at the very top or bottom of a description. If the thing you need to change (an expired affiliate link, an old sponsor URL, a discontinued discount code) sits anywhere in the body of your descriptions, Studio sends you back to editing videos one at a time.
Here's how to actually change all your YouTube descriptions at once — the full find-and-replace way — in a few minutes.
Why YouTube Studio can't change all descriptions at once
Studio does have a bulk edit box, but it only does two things: prepend text to the start of every description, or append text to the end. It cannot search inside a description and replace a specific string. So if 200 of your videos contain Use code SUMMER for 10% off at sponsor-old.com and the sponsor moved to sponsor-new.com, Studio gives you no way to swap that line across all of them — you'd open 200 videos and fix each by hand.
That gap is exactly what a dedicated bulk description editor fills.
Step 1 — Install a bulk find-and-replace tool
The fastest path is a browser extension that talks to YouTube through Google's official Data API. Install Description Modifier from the Chrome Web Store (it also runs on Microsoft Edge, Brave, and other Chromium browsers). The free plan lets you run 10 bulk edits a month, up to 20 videos per run — enough to test the workflow without paying anything.
Step 2 — Sign in and connect the channel
Open the extension and sign in with Google, then grant access to the channel you want to edit. Access uses Google's official OAuth consent screen, so you never hand over a password — and you can revoke it any time from your Google security settings.
If you run more than one channel, the Agency plan lets you connect up to 20 and switch between them from a dropdown instead of signing out and back in.
Step 3 — Paste what to find, and what to replace it with
This is the part Studio can't do. In the Find text box, paste the exact string you want gone — the old affiliate tag, the dead sponsor URL, the retired discount code. In Replace with, paste the new text. Toggle case-insensitive matching if the casing varies across videos, and turn on regular expressions if you need a pattern instead of a literal string.
The same panel also handles the other operations Studio can't:
- Add a block (Courses, Shop, "New in shop," a newsletter CTA) to the top or bottom of every description in one run.
- Delete a string everywhere it appears — leftover blank lines collapse automatically so descriptions don't end up with gaps.
- Find without replacing, to see which videos contain a string before you commit to a change.
Step 4 — Read the line-by-line preview
Before anything is written, the extension shows a diff of every video that will change: the old line struck through, the new line below it. Scan it, catch any surprise matches, and cancel if something looks wrong. For larger jobs you type CONFIRM in a safety box — and that box clears itself after every run so a stray click can't re-apply the same edit.
Step 5 — Run it, then refresh
Hit run. Descriptions update through the YouTube API in the background — a find-and-replace across 200 videos typically finishes in a few minutes. Click the built-in "Refresh YouTube / Studio tabs" button to see the changes live, and if anything looks off, undo rolls the whole run back.
Does changing a YouTube description affect views or ranking?
This is the fear that stops people from cleaning up old descriptions. In practice, editing a description does not reset a video's watch time, retention, or ranking. YouTube re-reads the description for search relevance, so keeping it accurate (correct keywords, working links) is generally good for discoverability, not harmful. The only real risk is a careless bulk edit with no preview — which is exactly why the line-by-line diff exists.
Common things people change across every description
- Swap an expired Amazon affiliate tag for a working one
- Replace a sponsor URL when the sponsor changes landing pages
- Remove a discontinued discount code
- Add a newsletter signup line to the bottom of every video
- Update social handles after a rebrand
- Strip out an old disclaimer and drop in a new one
The short version
You can't change all your YouTube descriptions at once inside Studio alone — its bulk edit only touches the start or end. A dedicated extension like Description Modifier does the full find-and-replace across your entire catalog, shows you a preview first, and lets you undo if needed. That's the difference between an afternoon of tab-by-tab clicking and a five-minute job.
Want to change all your descriptions at once? Install Description Modifier for Chrome — 10 free runs a month, up to 20 videos each, no card required. Pro is $9/mo for unlimited, and Agency plans start at $39/mo for 5 channels.
Try Description Modifier free
Bulk-edit YouTube descriptions with a safety preview, undo, and multi-channel support. 10 free runs a month, up to 20 videos each — no credit card required.