Free Calculators was invisible to AI search. viberrr caught it.
Free Calculators has 147 pages of free tools. viberrr's visibility check found that the crawlers behind AI assistants like ChatGPT, Claude and Perplexity saw a loading spinner on every one of them. One change later, they see the site.
The site: Free Calculators, 147 pages of free calculators for math, money, health and more. Every number here can be checked: freecalculators.ai.
6179
Out of 100, across 11 checks for search, AI answers and agents.
10 of 102 of 10
Of the pages the check reads. The last 2 are next.
31 characters1,068
Before, it was the words “Crunching numbers…”.
Same page, same crawler, before and after.
The Free Calculators home page as most AI crawlers and agents read it: without running JavaScript.
Before
Free Calculators · Oct 25
61visibility score
Readable by AI crawlers: fail. 10 of 10 pages have almost no text until JavaScript runs.
What viberrr's check found
- Readable by AI crawlers10 of 10 blank
- A first paragraph AI can quoteFail
- Answers to the questions people askNeeds work
- Structured data that says what it isNeeds work
- Sitemap, titles, AI bots allowedPass
After
with viberrrFree Calculators · Oct 27
61visibility score
Free Online Calculators for Every Need
Access over 100 free calculators for math, finance, health, business and more.
Home · FAQ · Request a Free Calculator
Readable by AI crawlers. 8 of 10 pages now arrive with their text; 2 to go.
viberrr's check, re-run on the live site
- Readable by AI crawlers2 of 10 left
- A first paragraph AI can quoteBetter, not done
- Answers to the questions people askPass
- Structured data that says what it isNext
- Sitemap, titles, AI bots allowedPass
See the real screenshots ›
Found by a check, fixed in one file.
- Oct 25
viberrr's visibility check flags it
Free Calculators runs on viberrr, so it gets the same checks as every app on it. One came back red: Readable by AI crawlers and agents: fail. “10 of 10 pages have almost no text until JavaScript runs. Google renders JavaScript, but most AI crawlers and agents don't, so to them these pages are blank.” The check came with the fix: render each page's content on the server.
- Oct 27
The cause: a loading screen
The site wrapped every page in a full-screen loader that showed a spinner until the browser finished loading. People never noticed. But a crawler that doesn't run JavaScript got the spinner and nothing else, on all 147 pages in the sitemap.
- Oct 27
One file changed
The owner's agent, connected to viberrr, removed the loader so pages arrive with their content, loaded 21 sample pages to make sure each one still rendered, and shipped it. The only visible change: no spinner.
- Oct 27
viberrr re-checks the live site
Same check, same site, a few hours later: the score went from 61 to 79, and the pages that read as blank went from 10 of 10 to 2 of 10. Those 2 are on the list, along with the rest of what the check found.
Google isn't the only one reading anymore.
Google runs a page's JavaScript before it judges it, so the site still showed up there. Most AI crawlers, like the ones behind ChatGPT, Claude and Perplexity, don't, and other search engines do it less reliably. To those crawlers, Free Calculators was 147 copies of a spinner: nothing to index, quote or recommend.
More questions now get answered by AI assistants and agents before anyone clicks a search result. A site they can't read isn't in that conversation. AI tools build apps this way all the time, and nothing looks wrong when you open the site yourself. That's why viberrr checks it.
Rankings take weeks. We'll show you either way.
Making a site readable doesn't move traffic overnight: crawlers have to come back, and rankings have to settle. We'll add Search Console numbers to this page at 30 and 90 days, whatever they show.
Published Oct 27, 2026. No traffic results yet.
Still on the list, from the same check
- Fix the 2 pages that still load their main content late.
- Add structured data to the home page, so search engines read it as a product.
- Open each content page with a direct answer, so AI assistants can quote it.
- Publish an agent card, so other agents know what the site does.
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Add your app to viberrr and the same visibility check runs on it: search, AI answers and agents, with the fix for anything that fails.