In-depth articles

The Stockio blog

Practical deep dives for designers, developers and creators. Every article comes with an interactive tool so you can try the technique as you read.

Accessibility

What's New in WCAG 2.2: 9 New Success Criteria Explained

Understand all nine WCAG 2.2 additions, their conformance levels, and the practical checks designers and developers should add to an existing accessibility workflow.

Inside this article

Establish the baseline before changing components
Focus visibility: distinguish AA from AAA
Pointer interaction: dragging and target size
Help and repeated information in workflows

Noor HaddadRead the article

Accessibility

Accessible Tables: Headers, Captions and Responsive Layouts

Build data tables that retain meaningful headers, readable captions and usable controls on small screens, with practical markup and a focused accessibility test plan.

Noor Haddad

Accessibility

ARIA Roles Explained: When Native HTML Is Better

Learn when ARIA adds useful semantics, how roles and states work, and why native HTML should remain your starting point for accessible interactive components.

Noor Haddad

Accessibility

Keyboard Navigation Testing: Fix Focus Order and Traps

Build a repeatable keyboard testing workflow that catches unreachable controls, confusing focus order, and keyboard traps before your next release.

Noor Haddad

DevOps & Deployment

GitHub Actions CI for Node.js: A Reliable Pipeline

Build a Node.js CI pipeline with reproducible installs, focused checks, safe permissions, and useful failure reports before allowing production deployment.

Inside this article

Define the checks that protect a release
Make installation reproducible
Separate fast feedback from expensive checks
Keep untrusted contributions isolated

Ravi DesaiRead the article

Performance & SEO

How to Improve INP and Fix Slow User Interactions

Find what delays clicks, taps, and typing with a practical INP workflow covering field data, browser traces, long tasks, rendering, and regression testing.

Marcus Bell

Backend & APIs

Serverless vs Edge Functions: Cold Starts and Limits

Choose between regional serverless functions, edge runtimes, and persistent services by measuring cold starts, database distance, execution limits, and failure behavior.

Chidi Nwosu

Backend & APIs

REST vs GraphQL vs tRPC: Choosing an API Style

Compare REST, GraphQL, and tRPC through client needs, caching, security, and deployment constraints, then validate your choice with a production-shaped prototype.

Chidi Nwosu

Backend & APIs

REST API Error Handling: Status Codes and Problem Details

Design consistent REST API errors using HTTP status codes and Problem Details, with validation fields, safe diagnostics, and tests that keep clients predictable.

Inside this article

Start with a shared error contract
Map failures to meaningful HTTP statuses
Define a useful problem document
Centralize translation without hiding context

Chidi NwosuRead the article

JavaScript & Frameworks

React Error Boundary and Suspense for Resilient UIs

Design React loading and failure states that preserve useful content, isolate broken widgets, and offer reliable recovery without turning every render into a full-page spinner.

Daniel Kim

JavaScript & Frameworks

Astro vs Next.js for Content-Heavy Sites

Compare Astro and Next.js through publishing workflows, interactive features, preview requirements, and deployment constraints before committing your content site to either framework.

Sofia Marchetti

JavaScript & Frameworks

useEffect Cleanup and Dependencies: Fix Loops in React

Learn when React effects are necessary, how dependency arrays work, and how to prevent stale closures, duplicate subscriptions, and runaway render loops.

Sofia Marchetti

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