Every published module, all in one place.
130 modules
UI & Frontend → Animations
How to use web animation to communicate rather than decorate: duration bands for UI motion, easing choices, performant transform/opacity-only animation, prefers-reduced-motion support, avoiding layout-shifting motion, and entrance vs exit asymmetry.
by @markdowners
Database → Search
Build full-text search that returns relevant results: analyzer and tokenizer choices, balancing exact vs. fuzzy matching, relevance tuning with field boosts, result pagination, keeping the search index in sync with the source of truth, highlighting, and zero-result handling.
Security → Input Validation
Validating untrusted input at every trust boundary: server-side enforcement, allowlists over blocklists, schema and range checks, canonicalization, and safe error messages.
Social & Marketing → Linkedin
Rules for optimizing a LinkedIn profile as a standing asset, distinct from post writing: the headline formula beyond job title, an About section written as narrative, keyword placement for recruiter search, the Featured section, and experience bullets.
Business Docs → Other
Rules for writing OKRs that actually drive outcomes: outcomes over tasks, measurable key results, a 3-5 key-result cap, ambition calibration, scoring discipline, and common anti-patterns like sandbagging and task-list key results.
Business Docs → Pitch Decks
Rules for writing startup pitch decks that hold investor attention: the 10-slide skeleton, headline-as-takeaway titles, numbers with context, design restraint, and audience tailoring.
AI Behavior → Prompt Hygiene
How to write prompts that reliably produce the output you want: specific over vague instructions, examples over descriptions, positively stated constraints, stable-first context ordering, explicit output format, iteration over mega-prompts, and testing prompts like code.
Social & Marketing → Other
Rules for writing a social media profile bio that converts a visit into a follow: the who/what/why-follow line, keyword placement for in-app search, CTA and link strategy, platform character limits, and what to cut.
Testing & Quality → Unit Testing
Writing unit tests that stay useful: testing behavior not implementation, one assertion focus per test, descriptive names as documentation, arrange-act-assert structure, fast and deterministic execution, disciplined mocking, and edge case coverage.
Security → XSS & CSRF
Preventing cross-site scripting and cross-site request forgery: context-aware output encoding, avoiding innerHTML with user data, CSP as defense in depth, strict sanitization allowlists, and SameSite cookies with CSRF tokens.