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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
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Minifiers

CSS Minifier

Compress CSS by eliminating unnecessary spaces and comments.

CSS Minifier

About this tool

Reduce the file size of your CSS by removing unnecessary whitespace, comments, and redundant code. Smaller CSS files load faster, improving your website's performance and Core Web Vitals scores.

JS Minifier

Reduce the size of your JavaScript files for faster loading.

MinifierOpen HTML Minifier

Optimize HTML by removing excess code and whitespace.

MinifierOpen File Minification Checker

Check if JavaScript and CSS files are minified.

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

What is CSS minification?

CSS minification is the process of removing unnecessary characters from CSS code (whitespace, comments, formatting) without changing its functionality, resulting in smaller file sizes.

Is minified CSS safe to use in production?

Yes, minified CSS is functionally identical to the original. Always keep the original source files for development and serve minified versions in production.