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Zsolt Oroszlány
Founder & Chief Creative Officer of Playful Sparkle since 2004, combining business leadership, digital strategy, design, and software engineering to help organizations build effective digital solutions. Regularly publishes insights on web development, SEO, design, and emerging technologies.
DMARC Explained: How to Stop Domain Spoofing
DMARC email authentication guide 2026: RFC 9989/9990/9991, p=reject enforcement, 10.7% adoption, alignment requirements, and implementation best practices.
DKIM Explained: How Email Cryptographic Signatures Work
DKIM email authentication guide 2026: cryptographic signatures, RSA 2048-bit keys, selector rotation, RFC 6376, and best practices for implementation.
Which AI Assistant Should You Use? Complete 2026 Comparison Guide
AI assistant comparison 2026: ChatGPT (1B users, free unlimited text), Gemini (1M context, $19.99/mo), Claude (80.3% coding score), DeepSeek (fully free), and Perplexity (research).
SPF Explained: How Sender Policy Framework Protects Your Domain
SPF email authentication guide 2026: DNS TXT record, 10-lookup limit, RFC 7208, hard vs soft fail, common mistakes, and implementation best practices.
Email Authentication Explained: SPF, DKIM and DMARC – Complete Guide for 2026
Email authentication guide 2026: SPF, DKIM and DMARC explained. Complete overview of how these protocols stop spoofing, protect brands, and improve deliverability.
IndexNow: The Complete Guide to Instant URL Indexing for Search Engines
IndexNow guide 2026: instant URL indexing for Bing, Yandex, Seznam, Naver, and Yep. 3.5B daily submissions, 22% of clicked Bing URLs, and implementation guide.
Audit Any Website in Seconds with the Playful Sparkle SEO Extension
SEO audit extension for Chrome, Firefox, and Edge: instant real-time analysis of titles, meta tags, headings, links, structured data, security headers, and more.
Image SEO: The Complete Guide to Optimizing Images for Search Engines, AI Search, Performance, and Accessibility
Image SEO guide 2026: filenames boost rankings 2.3 positions, structured data increases AI crawler access 10×, WebP/AVIF compression, Core Web Vitals, and AI-ready visual content.
Generating a Self-Signed SSL Certificate on Windows and Linux: Complete Setup, Security, and Best Practices
Complete guide to self-signed SSL certificates on Windows and Linux: OpenSSL commands, SAN configuration, Apache/Nginx setup, TLS security best practices, and local development tools.
AI Search Optimization: The Complete Guide to Optimizing Websites for AI Search Engines
AI Search Optimization guide: how AI search works, ranking signals, structured data (10× crawler access), E-E-A-T, and practical steps to get cited in ChatGPT, Gemini, Claude, and Perplexity.
Managing Advertising Permissions Across Multiple Platforms
Managing ad account permissions across Meta, Google Ads, LinkedIn, TikTok, Pinterest, X, and Snapchat. Principle of least privilege, role-based access, and regular audits.
Implementing the EU Order Withdrawal Button in WooCommerce: A Comprehensive Guide
EU withdrawal button WooCommerce guide: Directive 2023/2673, legal requirements, plugin options, and step-by-step implementation for EU compliance.
Since 2004, we've engineered complete digital solutions by combining branding, design, development, and digital marketing into a unified process. Every project is planned to strengthen your brand, improve customer experiences, and support measurable business growth.
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