Guides & Tutorials
Practical, no-fluff guides on images, PDFs, security and data — written to be useful in five minutes or less.
Your Next.js OG Image Works Locally and Dies on Vercel. Here's Why.
A Vercel build that fails at opengraph-image with ETIMEDOUT, but builds fine on your laptop. The cause is usually one emoji. What actually breaks, and how to fix it.
August 8, 2026 · 8 min read
Favicon Formats and Sizes 2026: What Your Site Actually Needs
Which favicon formats and sizes you really need in 2026: favicon.ico vs PNG vs SVG, apple-touch-icon 180×180, site.webmanifest and the exact head snippet to use.
August 6, 2026 · 8 min read
7 Favicon Mistakes That Make Your Site Look Broken (and How to Fix Them)
The 7 most common favicon mistakes — missing apple-touch-icon, transparent dark logos, stale caches, wrong paths — and how to find and fix each in minutes.
August 6, 2026 · 6 min read
How to Compress Images Without Losing Quality (2026 Guide)
Learn how to compress images without visible quality loss: the 80% JPEG rule, WebP savings, and which settings actually matter for web and email.
August 1, 2026 · 7 min read
JPG vs PNG vs WebP: Which Image Format Should You Use?
JPG vs PNG vs WebP compared with real file size examples. Learn which image format to use for photos, screenshots, logos and websites in 2026.
July 28, 2026 · 7 min read
How to Merge PDF Files for Free (Without Uploading Them Anywhere)
Merge PDF files free in your browser — no uploads, no watermarks. Learn page order tricks, upload-limit workarounds, and how to split PDFs too.
July 24, 2026 · 6 min read
Social Media Image Sizes 2026: The Complete Cheat Sheet
Every social media image size for 2026: Instagram 1080×1080, Stories 1080×1920, YouTube 1280×720, LinkedIn, X — and why exact sizes matter.
July 20, 2026 · 7 min read
Base64 Encoding Explained: What It Is and When (Not) to Use It
What is Base64 encoding, why does it make data ~33% bigger, and when should you use data URLs? A clear, practical explanation with examples.
July 15, 2026 · 6 min read
Password Strength Explained: Entropy, Length, and Why Symbols Matter Less Than You Think
Password entropy explained simply: why a 16-character password beats P@ssw0rd!, how many bits you actually need, and when passphrases win.
July 10, 2026 · 7 min read
How AI Content Detectors Work (and Why They Get It Wrong)
How AI content detectors work: perplexity, burstiness, and what a browser-based detector can actually measure. Why false positives happen and what scores mean.
July 5, 2026 · 8 min read