Usually not. If a widget renders inside an iframe, its links belong to the widget's own document, so they're generally not credited to your page. If a widget injects a real anchor tag into your page, it can pass value, but Google has warned since 2016 that keyword-rich widget links are link spam unless they're qualified with rel="nofollow" or rel="sponsored".
Two questions decide every case
Whether an embed counts as "a backlink" comes down to where the link lives and who put it there.
- Where does the link actually live: inside an iframe, or in your page's own rendered HTML?
- Who put it there, and why: is it an editorial decision, or a link that ships automatically with a widget distributed across thousands of sites?
Question one decides whether the link is part of your page at all. Question two decides whether you want it.
How to check in 30 seconds
Inspect the widget in your browser and look at what wraps the link. Right-click the widget and choose Inspect:
- If the element sits inside an
<iframe>, the link is part of a different document, usually hosted on another domain. It is not a link in your page's HTML. - If the element is a plain
<a href>in your own DOM, it's a genuine link from your URL, and normal link rules apply.
A second check removes the remaining doubt: run the page through the URL Inspection tool in Search Console and look at the rendered HTML. Search it for the destination domain. If the link doesn't appear in the rendered HTML of your URL, it isn't your link, however it looks on screen. Google's guide to crawlable links says Google can only crawl a link that is an <a> HTML element with an href, including one inserted by JavaScript, so the rendered HTML is what counts.
One nuance: Google does try to index iframed content as part of the host page when the embedded page allows it, and in January 2022 it added the indexifembedded robots tag to control that. Google hasn't said that links inside an iframe are credited to the host page, so don't count on them.
The common cases
| Embed | Where the link usually lives | Passes link value to you? |
|---|---|---|
| Review badge loaded in an iframe | The provider's document | Generally no |
| Review widget rendered by a script into your page | Your DOM | Possibly, if a followed link appears in the rendered HTML; check it |
| YouTube, X, CodePen embed | iframe | Generally no |
| "Powered by [tool]" injected by a script | Your DOM | Technically yes, and it's the pattern Google's spam policy names |
| A comparison table you wrote by hand | Your HTML | Yes |
Review platforms differ, and some render inside the page rather than an iframe, so inspect your own install instead of assuming. The pattern holds, though: the things people assume are backlinks mostly aren't, and the one case that clearly passes value is the one carrying the most risk.
Why "free widget = free backlinks" stopped working
Google named widget links as a problem on September 8, 2016, in a reminder about widget links: keyword-rich widget links violate its guidelines, the fix is to add rel="nofollow" or remove them, and the webspam team may take manual action on unnatural links. Today's spam policies list "keyword-rich, hidden, or low-quality links embedded in widgets that are distributed across various sites" and "widely distributed links in the footers or templates of various sites" as link spam.
These links are easy to detect. They appear across hundreds or thousands of unrelated domains in the same template position, with the same anchor text, growing at the same rate as the widget spreads. No manual outreach campaign produces that footprint. It's the same structural giveaway that makes a link farm obvious.
If you distribute a widget, do it right
Widgets are still a good marketing channel; just stop treating them as a link-building channel.
- Qualify the embedded link with
rel="nofollow"orrel="sponsored". Google's spam policies say such links aren't a violation as long as they're qualified. - Use your brand as the anchor, not a money keyword. "Powered by Acme" is fine. "Powered by cheap car insurance quotes" is a flag.
- Make the attribution link optional, or at least removable. A link the host chose to keep is worth more than one they couldn't remove.
- Measure the right thing. The return on a widget is brand exposure and referral traffic. Expecting PageRank from it is what turns a good idea into a penalty risk.
Since March 1, 2020, Google treats nofollow as a hint rather than a strict rule for crawling and indexing, a change announced in evolving nofollow on September 10, 2019, nearly 6 months before it took effect. Qualifying a widget link still tells Google you aren't trying to pass ranking credit, which is what the policy asks.
If you're the one hosting someone's widget
You're mostly fine. Links inside an iframe aren't outbound links in your page's HTML, and linking out doesn't hurt SEO in normal circumstances anyway.
Two things are worth checking. First, whether the script injects links into your DOM that you didn't agree to: some tools quietly add a followed footer link. Second, whether the widget's own link is followed and points somewhere you'd rather not endorse. Inspect once at install time and you'll know for the life of the integration.
What to do instead
If the goal was backlinks, the widget format was never the shortcut. A link that helps you is an editorial one: inside the body of a relevant page, on a real site, placed by someone who chose to. JavaScript-injected links can pass value when they render properly, and nofollow and dofollow both have their place, but neither changes the requirement that someone has to want to link to you.
One way to get in-content links is a 1-for-1 article swap with another site owner. Backlinkster arranges those, and each swap is verified by API; the free plan includes 5 swaps a month. See pricing for the paid tiers.
Frequently asked questions
Does a Trustpilot or other review widget give me a backlink?
Usually not. When the widget renders in an iframe, the links inside belong to the provider's document, not yours. If a widget renders directly into your page, check the rendered HTML: any followed link there is a real link, and if it was added automatically you may want it qualified. Either way, review widgets are worth having for trust and conversions, not as backlinks.
Do JavaScript-injected links count as backlinks?
Yes, if the link ends up as a real <a href> element in the rendered page. Google's crawlable-links guide says links inserted with JavaScript are crawlable. The test is whether the link appears in the rendered HTML, not the raw source.
Is a "Powered by" footer link a penalty risk?
It can be, if it's keyword-rich, followed and distributed at scale; Google has warned about exactly that since 2016. Branded anchor text plus rel="nofollow" or rel="sponsored" keeps it on the right side of the policy.
Do YouTube embeds pass link value?
Generally no. The embed is an iframe pointing at youtube.com, and links within it aren't links in your page's HTML. Embedding a video can help engagement on your page, which is a separate benefit.
Should I nofollow the link in a widget I distribute?
Yes. It costs you nothing you were legitimately going to get, and it removes the pattern Google's spam policy explicitly names.
How can I tell if links in my backlink profile came from widgets?
Look for many referring domains linking to the same URL with identical anchor text from the same template position. That uniformity is the signature; the backlink profile audit walkthrough covers how to spot it.
Related: Do JavaScript links pass SEO value? · Dofollow vs nofollow links · Do UGC-tagged links pass value? · What is a link farm? · How to audit your backlink profile