Platform
AI visibility trackingWhere you show up, across every modelPrompt researchThe questions your buyers actually askAI search optimizationOn-page, off-page and technical fixesAgentic workflowsSet it once, it watches and briefs the fixMCP & REST APIBuild on top of ZeroRank dataCo-pilotAsk your data anything, in chatNew
Free to startRun a full report before you enter a card
Solutions
Marketing teamsProve AI search moves pipeline, not rankAgenciesUnlimited seats, white-label reportsEnterpriseSSO, audit trails and a security review
ResourcesBlogHow AI search behaves, in the fieldUniversityShort video lessons on AI search, freeDocsSet-up guides and the API referenceFree toolsCheck a prompt or a domain, freeCompareZeroRank against the alternatives
CompanyAbout usWho builds ZeroRank, and whyCase studiesWhat changed, and by how muchWall of LoveCustomer reviews and video reviewsChangelogEverything we shipped, datedContactTalk to a human about your setup
ZeroRank mobileYour visibility, in your pocketComing soonApp StoreComing soonGoogle Play
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Performance

JavaScript Error Checker

Scan your webpage for JavaScript errors.

JavaScript Error Checker

About this tool

Detect common JavaScript errors in your webpage's inline scripts. JavaScript errors can break functionality, degrade user experience, and negatively impact SEO.

JS Minifier

Reduce the size of your JavaScript files for faster loading.

MinifierOpen File Minification Checker

Check if JavaScript and CSS files are minified.

URL checkOpen Deprecated HTML Tags Checker

Scan your webpage for outdated HTML tags.

URL checkOpen
No signup, no catch

What the free tools actually do

Seven of them run in the browser and ask for nothing. The eighth asks for a domain and an email, because it has to send you a report.

  • best AI visibility trackerDaily
    ChatGPT
    Gemini
    Perplexity
    Claude

    A real check, right now. Four models asked your question, with the answers they gave back.

  • Prompt ideas
    what is AEO2.4k
    best AEO tools1.1k
    AEO vs SEO860

    Prompt research, free. A sample of the ideas the paid research page ranks.

  • A crawler that only reads. It fetches your pages the way an AI crawler would and never writes.

  • Generators
    llms.txtGenerate
    FAQ schemaGenerate
    Article schemaGenerate

    Copy-paste output. llms.txt and schema markup you can paste straight into the page.

  • 30sto a visibility report on your domain

    Use it in the pitch. Screenshot it, export it. White-label and weekly is the paid plan.

Everything you're wondering

Or ask us anything at hello@zerorank.ai

How do JavaScript errors affect SEO?

JavaScript errors can prevent search engine bots from rendering your page correctly, causing important content to be missing from the index. They also degrade user experience, increasing bounce rates.

What are common JavaScript errors on websites?

Common errors include undefined variables, failed API calls, missing DOM elements, syntax errors in inline scripts, and conflicts between third-party scripts. These can break page functionality and tracking.