# Frost Rank

> Frost Rank is a free suite of fast, no-signup SEO and developer tools — schema generators, meta tag builders, redirect checkers, formatters and more — plus in-depth guides on the technical SEO and developer concepts behind them.

## Tools

- [JSON-LD Schema Generator](https://frostrank.com/tools/json-ld-schema-generator): Generate valid structured data for Person, Organization, Product, FAQ and more — no hand-written JSON-LD.
- [Meta / OG Tag Generator](https://frostrank.com/tools/meta-og-tag-generator): Build accurate title, description, Open Graph and Twitter Card tags with live previews.
- [Robots.txt / Sitemap Validator](https://frostrank.com/tools/robots-sitemap-validator): Catch crawl-blocking mistakes in robots.txt and XML sitemaps before Google finds them for you.
- [Page Speed Checklist](https://frostrank.com/tools/page-speed-checklist): A practical, ordered checklist for fixing Core Web Vitals issues — no vague advice.
- [JSON Formatter & Validator](https://frostrank.com/tools/json-formatter): Beautify, minify and validate JSON instantly with error highlighting.
- [Word & Character Counter](https://frostrank.com/tools/word-character-counter): Count words, characters and reading time — built for SEO meta and content length checks.
- [Base64 Encoder / Decoder](https://frostrank.com/tools/base64-encoder-decoder): Encode or decode text, images and files to and from Base64 instantly.
- [Redirect Chain Checker](https://frostrank.com/tools/redirect-chain-checker): Trace 301/302 redirect chains for any URL and spot SEO-killing redirect loops.
- [HTTP Header Checker](https://frostrank.com/tools/http-header-checker): Inspect response headers, security headers and caching behavior for any URL.
- [HTML Formatter & Source Checker](https://frostrank.com/tools/html-formatter-source-checker): Paste a URL or HTML code and inspect the raw, formatted source — no browser dev tools needed.
- [HTML Viewer & Live Renderer](https://frostrank.com/tools/html-viewer-live-renderer): Paste HTML, CSS and JS and see an instant rendered preview — like a mini sandbox in your browser.
- [QR Code Generator](https://frostrank.com/tools/qr-code-generator): Generate a QR code for a URL, Wi-Fi network, contact card, email or text — with colors, a center logo, PNG/SVG download and printable Wi-Fi cards.
- [Password Generator](https://frostrank.com/tools/password-generator): Generate strong, random passwords and memorable passphrases with live entropy and crack-time scoring.
- [IP Address Lookup](https://frostrank.com/tools/ip-address-lookup): Look up geolocation, ISP and ASN details for any IP address, or the organization and announced prefixes behind any AS number.
- [Mortgage Calculator](https://frostrank.com/tools/mortgage-calculator): Calculate monthly mortgage payments, total interest, and amortization schedule for any loan amount and term.
- [Invoice Generator](https://frostrank.com/tools/invoice-generator): Create professional invoices with itemized billing, discounts, tax and 30 currencies, then download a PDF — no signup required.
- [Barcode Generator](https://frostrank.com/tools/barcode-generator): Generate barcodes in 12 formats (Code 128, EAN-13, UPC-A and more) with automatic check digits, print-ready labels and PNG/SVG download.
- [llms.txt Generator](https://frostrank.com/tools/llms-txt-generator): Generate a spec-valid llms.txt file from your sitemap, or validate an existing one, so AI assistants get a clean map of your site.

## Guides

- [JSON-LD Structured Data: The Complete Guide](https://frostrank.com/guides/json-ld-structured-data-guide): What JSON-LD structured data is, which schema types are worth your time, how Google really uses it, and the mistakes that get pages penalized or ignored.
- [Open Graph & Meta Tags: The Complete Guide](https://frostrank.com/guides/open-graph-meta-tags-guide): What title, meta description, Open Graph and Twitter Card tags do, the character limits and image sizes that matter, and why social previews still break.
- [Robots.txt & XML Sitemaps: The Complete Guide](https://frostrank.com/guides/robots-txt-xml-sitemaps-guide): How robots.txt and XML sitemaps control crawling and indexing, why blocking a crawl isn't blocking an index, and the mistakes that silently cost traffic.
- [Core Web Vitals & Page Speed: The Complete Guide](https://frostrank.com/guides/core-web-vitals-page-speed-guide): What LCP, INP and CLS actually measure, the real pass/fail thresholds Google uses, why lab and field data disagree, and which fixes move each metric the most.
- [JSON Syntax & Validation: The Complete Guide](https://frostrank.com/guides/json-syntax-validation-guide): The JSON grammar rules that trip up hand-written data, why JSON only looks like JavaScript, and how to read a parser's line-and-column error messages.
- [Content Length & Word Count for SEO: The Complete Guide](https://frostrank.com/guides/content-length-word-count-seo-guide): Why word count isn't a ranking factor on its own, the character limits that matter for titles, meta descriptions and social posts, and how to size content.
- [Base64 Encoding Explained: The Complete Guide](https://frostrank.com/guides/base64-encoding-explained-guide): How Base64 works at the bit level, why it isn't encryption, why it makes files ~33% bigger, and when a Data URI or URL-safe variant is the right call.
- [301 vs 302 Redirects & Redirect Chains: The Complete Guide](https://frostrank.com/guides/301-302-redirects-chains-guide): When to use a 301 vs a 302 redirect, how many hops Google will follow, what causes redirect loops, and how much ranking value a redirect really passes.
- [HTTP Response & Security Headers: The Complete Guide](https://frostrank.com/guides/http-response-security-headers-guide): What each major HTTP response header does, which security headers matter most and why, and how Cache-Control affects site speed and crawl budget.
- [HTML Source Code & Formatting: The Complete Guide](https://frostrank.com/guides/html-source-code-formatting-guide): Why raw HTML source and the rendered DOM can differ, what that gap means for how crawlers see your page, and the SEO issues only visible in the source.
- [HTML/CSS/JS Sandboxes & Live Previews: The Complete Guide](https://frostrank.com/guides/html-css-js-sandboxes-guide): How an HTML/CSS/JS sandbox isolates untrusted code with iframe sandboxing, the one attribute value that matters most, and what a sandbox can't protect against.
- [QR Codes for Marketing & SEO: The Complete Guide](https://frostrank.com/guides/qr-codes-marketing-seo-guide): Static vs dynamic QR codes and why one can expire, what error correction protects against, how much data fits, and how to use QR codes without hurting scans.
- [IP Addresses, ASNs & Geolocation: The Complete Guide](https://frostrank.com/guides/ip-addresses-asns-geolocation-guide): What an AS number identifies, how accurate IP geolocation really is, why it can't identify a person, and how to verify a crawler claiming to be Googlebot.
- [Password Security & Strong Passwords: The Complete Guide](https://frostrank.com/guides/password-security-strong-passwords-guide): What makes a password hard to crack, why entropy is the real measure of strength, how password managers and 2FA help, and the mistakes that weaken passwords.
- [Mortgage Calculator: The Complete Guide](https://frostrank.com/guides/mortgage-calculator-guide): How a mortgage calculator works out your monthly payment, how down payment, term and rate change total cost, when PMI applies, and how to read amortization.
- [Barcodes (UPC, EAN & Code 128): The Complete Guide](https://frostrank.com/guides/barcodes-upc-ean-code-128-guide): How barcodes work, which format to use for retail, inventory or shipping, how UPC and EAN relate, what check digits catch, and how to print barcodes that scan.
- [How to Make an Invoice: The Complete Guide](https://frostrank.com/guides/how-to-make-an-invoice-guide): How to make an invoice: what to include, invoice vs receipt vs proforma, Net 30 and 2/10 Net 30 terms, numbering, getting paid on time and a free template.

## Company

- [About Frost Rank](https://frostrank.com/about): Frost Rank is a free suite of fast, no-signup SEO tools built by a working SEO and Laravel developer, from real client work. Learn how it works and who's behind it.
- [Rahib Ali](https://frostrank.com/rahib-ali): Rahib Ali — Senior PHP/Laravel Developer, Technical SEO Specialist & AI Automation expert. 12+ years experience, Top Rated on Upwork, founder of Frost Rank.
- [Contact](https://frostrank.com/contact): Contact Frost Rank to report a bug, request a new tool, ask a question or send feedback.
- [Privacy Policy](https://frostrank.com/privacy-policy): How Frost Rank collects, uses, and protects information, including cookies used for advertising.
- [Terms of Service](https://frostrank.com/terms): The terms that govern your use of Frost Rank's free SEO tools.