Practical SEO Tools.
Built for Real Work.
Generate structured data, optimize metadata, build campaign URLs, analyze content and handle technical SEO directly in your browser.
The Toolkit
15 focused utilities. Zero setup required.
FAQ Schema Generator
Turn your questions and answers into clean, copy-ready FAQPage JSON-LD structured data markup.
Schema Markup Generator
Build valid Schema.org JSON-LD structured data for 15 entity types including Organization, Product, Article, and LocalBusiness.
Product Title Generator
Generate 20 optimized ecommerce product title variations tailored for Amazon, eBay, Shopify, WooCommerce, and Etsy.
Meta Description Generator
Create concise, targeted meta descriptions with real-time character counts, SERP preview, and paired title generation.
SERP Preview Tool
Simulate how your page title, URL, and meta description render in Google search results across desktop and mobile devices.
Open Graph Generator
Generate Facebook Open Graph and Twitter/X card meta tags with live visual feed card previews and ready-to-paste HTML.
Canonical Tag Generator
Generate and validate rel="canonical" HTML link tags to prevent duplicate content indexing issues across your website.
Robots.txt Generator
Create clean, compliant robots.txt directives with multi-agent crawler groups, sitemap linking, and blocking safety warnings.
XML Sitemap Generator
Build and validate standard XML sitemaps from URL lists, bulk paste, or CSV files with lastmod, changefreq, and priority fields.
Hreflang Generator
Generate international hreflang alternate link tags for HTML headers and XML sitemaps with ISO language/region validation and x-default support.
Keyword Density Checker
Analyze unigrams, bigrams, and trigrams in text to audit keyword frequency, stop words, and vocabulary diversity locally in your browser.
URL Slug Generator
Convert titles and headlines into clean, URL-friendly slugs with stop-word removal, Unicode transliteration, and separator options.
LLMS.txt Generator
Create and validate llms.txt files to provide structured Markdown documentation indexes for AI systems and research crawlers.
Product Name Generator
Generate 30 brandable, pronounceable product and business name ideas tailored to your industry, concept, and style.
UTM Parameter Builder
Build error-free campaign URLs with source and medium presets, offline QR codes, and private in-browser campaign history.
Core Principles
Why technical SEOs and founders use Zenvuk
Designed to eliminate friction from repetitive technical SEO and campaign formatting tasks.
100% Free Forever
No subscriptions, credit limits, or mandatory accounts. Every utility runs freely for everyone.
Client-Side Privacy
Your URLs, schemas, and content are processed locally in your browser session. No data is stored remotely.
Deterministic Precision
Output complies with Schema.org specifications, RFC 9309, and standard sitemaps.org protocols without AI hallucinations.
Topic Clusters
Organized by technical discipline
Everything is structured logically into focused clusters for real day-to-day work.
FAQ
Frequently Asked Questions
Is Zenvuk really 100% free?
Yes. All 15 utilities across technical SEO, Schema markup, crawler controls, ecommerce, and marketing attribution are completely free with zero usage caps, mandatory accounts, or credit card requirements.
How do the tools operate without paid third-party APIs?
Zenvuk runs native TypeScript calculation engines directly in your browser. Calculations rely on W3C specifications, Schema.org vocabularies, IETF RFC standards, and font-metrics models for instant, deterministic results.
Is my confidential data saved or tracked?
No. All computations occur client-side in your web browser. We do not store your schema inputs, sitemaps, robots configurations, or content drafts on external databases.