The History of QR Codes: From Denso Wave to the Mobile Era
A deep dive into the origin, standardization and global adoption of QR codes: Denso Wave (1994), ISO/IEC 18004, Reed–Solomon ECC, versions, Micro QR, and the smartphone‑driven boom.
Orqui Blog: Guides & Best Practices
Tips to optimize, convert, compress and prepare images & documents for the web.
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QR Codes in Signage: Why, Where and How to Deploy
A complete, practical guide to use QR codes on posters, packaging and physical spaces: goals, placement, viewing distance vs. size, contrast, error correction (ECC), print, materials, accessibility and measurement.
Transparent background: which formats support it and when to use them (PNG, WebP, AVIF)
After removing a background, you need an alpha‑capable format to avoid halos and jagged edges. Practical guide to pick between PNG, WebP and AVIF with quality.
Free Forever: Ad‑Supported, No Subscription Required
Orqui stays 100% free thanks to lightweight, privacy‑respecting ads. No accounts, no paywalls, no upload of files—everything runs locally.
Local image optimization (no uploads, no account)
How Orqui optimizes images fully locally: perceptual compression, automatic WebP/JPEG selection, batch processing, comparison view and total privacy.
Privacy & Security: 100% Local Processing (No Upload, No Account)
How Orqui keeps your files private: everything runs inside your browser. Nothing is uploaded. Free, no subscription, no registration.