Practical articles on code quality, web performance, accessibility, and developer tooling — written by the engineers building CodeAva.
Quishing (QR phishing) hides malicious links inside QR codes. Learn how the attack works, what payloads to watch for, and how to decode QR codes safely before executing them.
Stop hurting your Core Web Vitals with oversized images. Learn the technical differences between AVIF, WebP, PNG, and JPEG, when to use each, and how to optimize for LCP.
Every photo you take can contain hidden EXIF metadata, including GPS coordinates, timestamps, and device details. Learn how to inspect and strip image metadata safely in your browser.
Still using short, complex passwords with special characters? Learn why modern password guidance favors length, when passphrases make sense, and how to generate strong credentials safely.
Are your automated jobs running at 2 AM instead of midnight? Learn how cron handles timezones, why DST causes missed or double runs, and how to schedule jobs reliably.
Stop relying on red text for form errors. Learn the exact ARIA choreography to build accessible forms, manage focus on submission, and correctly use aria-live regions for dynamic validation.
Are your new URLs stuck in Google Search Console purgatory? Learn the technical difference between “Discovered” and “Crawled,” and how to fix server bottlenecks, crawl traps, and architecture flaws.
Googlebot crawled your page, but refused to index it. Discover the technical reasons why—from JavaScript rendering failures and soft 404s to canonical conflicts and thin content—and how to fix them.
TypeScript catches type errors, but it will not save you from unhandled promise rejections. Learn how floating promises cause crashes, silent UI failures, and skipped cleanup—and how to fix them.
`return await` is not always redundant. Learn when it matters in TypeScript, why it changes try/catch behavior, and how it improves async debugging and stack traces.
Whitelisting is dead. Learn how to implement a strict nonce-based Content Security Policy in Next.js and React without breaking hydration or third-party scripts.
Debugging a timestamp bug? Learn the difference between seconds and milliseconds, why JavaScript and JWTs often disagree, and how to avoid time-handling bugs in APIs and auth flows.
Debugging JWT expiry issues? Learn why valid-looking tokens still fail, how exp, iat, and nbf really work, and how to fix seconds-vs-milliseconds and clock-skew bugs.
Are marketing tags and chat widgets ruining your Core Web Vitals? Learn how third-party scripts block the main thread and how to fix INP using Web Workers, lazy loading, facades, and smarter execution.
Choosing between UUID v4, UUID v7, ULID, and Nano ID? Learn the trade-offs around sortability, database performance, URL safety, and implementation so you can pick the right ID format.
