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Guias de formatos de imagem, análises de desempenho web e a engenharia por trás de um kit de ferramentas com foco em privacidade.
How to Convert PNG to PDF Free: 5 Easy Methods
Convert PNG images to PDF for free using online tools, Windows, Mac, or command line. Learn how to merge multiple PNGs into one PDF, control page size, and keep image quality.
PNG Compression Techniques: Reduce PNG File Size Without Quality Loss
Reduce PNG file size with lossless and lossy compression techniques. Learn color depth reduction, alpha channel optimization, and the best free tools to shrink PNGs by 50-80%.
Photo Editing Without Photoshop — Free Tools That Actually Work
Explore the best free alternatives to Photoshop: GIMP, Canva, Pixlr, Snapseed, and browser-based tools for quick compress, resize, convert, and background removal.
Passport Photo Size — Requirements for US, UK, EU, and More
Passport photo size guide: US 2×2 inches (600×600 px at 300 DPI), UK/EU 35×45 mm, Canada 50×70 mm. Requirements for background, face size, and file format for online applications.
How to Optimize Images for SEO: Complete Checklist for 2026
A complete image SEO guide: file names, alt text, compression, formats (WebP/AVIF), lazy loading, structured data, and how fast images improve your Core Web Vitals score and Google rankings.
Are Online Image Converters Safe? What Happens to Your Photos After You Upload
Most 'free' online image converters upload your file to a server, store it for hours or days, and may train models on it. Here's how to tell which ones are safe — and how browser-only conversion actually works.
How to Open WebP Files — View, Convert, and Edit WebP Images
Can't open a .webp file? Learn how to view WebP images on Windows, Mac, and older apps — or convert WebP to JPG/PNG in seconds using a free browser tool.
How to Optimize Images for Mobile: Speed Up Your Site on Phones
Optimize images for mobile to improve page speed and Core Web Vitals. Use WebP format, compress to under 100KB, resize to max 800px wide, and enable lazy loading for faster mobile experiences.
Next.js next/image WebP vs Pre-Converted WebP: Which Is Faster?
next/image converts images to WebP on-the-fly at request time. Pre-converting to WebP at build time eliminates that overhead. Here's a detailed comparison with real benchmark numbers.
Next.js App Router SEO: Complete Optimization Guide
Metadata API, generateMetadata(), JSON-LD, hreflang, Open Graph, sitemaps, and robots.txt — every SEO lever available in Next.js 13+ App Router, explained with code examples.
next/image vs img Tag: When to Use Which in Next.js
next/image adds automatic WebP conversion, responsive srcset, lazy loading, and CLS prevention. The plain img tag is sometimes the right choice. Here's the decision framework.
How I Improved My Lighthouse Score from 64 to 92 by Converting GIFs to MP4
A real before/after walkthrough of replacing animated GIFs with autoplay-loop-muted MP4 on a marketing site. LCP, total payload, and battery use — every metric improved.