Articles & Guides
Practical how-tos, tips, and tutorials to help you get more from our tools.
74 articles · Page 3 of 8
GitHub Actions CI/CD: Build, Test, and Deploy Workflows from Scratch
Learn how to set up GitHub Actions for continuous integration and deployment. Covers triggers, jobs, matrices, secrets, caching, Docker, and real-world workflow examples.
HTTP Caching Guide: Speed Up Your Website Without Extra Infrastructure
Master Cache-Control headers, ETags, CDN caching strategies, and browser cache behavior to dramatically improve your site's load time and reduce server costs.
Redis Beyond Caching: Data Structures, Pub/Sub, and Real-Time Applications
Learn how to use Redis as more than a cache — explore its data structures, pub/sub messaging, streams, and patterns for building fast, scalable applications.
TypeScript Best Practices: Writing Safer, More Maintainable Code
Learn the TypeScript patterns that matter most — strict mode, utility types, generics, discriminated unions, and avoiding common type-system escape hatches.
Email Deliverability Guide: Why Emails Land in Spam and How to Fix It
Understand SPF, DKIM, DMARC, and sender reputation — the technical and content factors that determine whether your emails reach the inbox.
Game Theory Explained: The Prisoner's Dilemma and Why Cooperation Is Hard
A practical introduction to game theory — Nash equilibrium, the Prisoner's Dilemma, Tit-for-Tat, and why rational actors often fail to cooperate even when it benefits everyone.
BMI Calculator — How to Calculate Your Body Mass Index
Learn how to calculate BMI, what your result means, and the limitations of BMI as a health metric. Use our free BMI calculator for instant results.
Freelancer Finance Guide: Invoices, Taxes, and Managing Irregular Income
A practical financial guide for freelancers and independent contractors — covering invoicing, tax estimation, retirement savings, and building financial stability on variable income.
How to Convert JPG to PDF for Free — No Sign-Up, No Watermark
Convert one or multiple JPG images to a single PDF file in seconds. Free, no account required, no watermark. Works in your browser on any device.
How to Convert Video to GIF for Free — No Software Needed
Convert any video clip to an animated GIF instantly in your browser. Free, no sign-up, no watermark. Works with MP4, WebM, MOV, and AVI files.