Tutorials, guides, and updates about web development and our tools.
A practical guide to fixing common Base64 decode errors in API payloads, JWTs, images, data URLs, and Unicode text.
A practical guide to fixing JSON.parse errors in API responses, config files, logs, and pasted JSON snippets.
Learn when JSON5 or commented JSON is useful, why standard JSON rejects comments, and how to clean relaxed config files before using them in APIs.
How to choose between DATETIME, TIMESTAMP, INT, and BIGINT Unix time for MySQL expiration fields such as subscriptions, coupons, tokens, and account validity.
How to store Unix time in MySQL tables safely: choosing INT vs BIGINT, naming seconds and milliseconds columns, adding generated DATETIME columns, and writing efficient expiration queries.
Learn when to use encodeURI and encodeURIComponent for URLs, query strings, redirect parameters, path segments, and API payloads.
Learn how to debug Unix timestamp mistakes in JavaScript, APIs, databases, logs, and time-zone-sensitive systems.
A practical checklist for generating QR codes that scan reliably on posters, menus, cards, labels, and screenshots.
Compare JSON and XML for API payloads, configuration, logs, and debugging, with practical examples for choosing the right data format.
Learn how URL encoding works, when to use encodeURI or encodeURIComponent, and how to debug broken query parameters and percent-encoded text.