DevUtilixy Developer BlogPractical guides for developers — cron expressions, JSON, Base64, JWT, Unix timestamps and more, explained in plain English.https://devutilixy.com/en-usHow to Fix Common JSON Errors: Unexpected Token, Trailing Comma & Morehttps://devutilixy.com/blog/json-common-errors/https://devutilixy.com/blog/json-common-errors/Learn how to fix the most common JSON parsing errors — unexpected token, trailing comma, unquoted keys, and unclosed brackets — with examples of each.Tue, 28 Jul 2026 00:00:00 GMTQuery String Parameters Explained: How to Parse and Build a URL Query Stringhttps://devutilixy.com/blog/url-query-params/https://devutilixy.com/blog/url-query-params/Learn how URL query strings work, how to parse them with URLSearchParams, how to build one correctly, and the encoding mistakes that break them.Tue, 28 Jul 2026 00:00:00 GMTURL Encoding Explained: What is %20 and Why Does It Exist?https://devutilixy.com/blog/url-encoding-explained/https://devutilixy.com/blog/url-encoding-explained/Ever seen %20 or %2F in a URL and wondered what it means? This guide explains percent encoding, why it's necessary, and how to encode/decode URLs correctly.Wed, 08 Apr 2026 00:00:00 GMTJSON.stringify vs JSON.parse: The Complete Guide with Exampleshttps://devutilixy.com/blog/json-stringify-parse/https://devutilixy.com/blog/json-stringify-parse/Two of the most used JavaScript functions — but easy to confuse. Learn when to use each one, common mistakes, and practical real-world examples.Tue, 07 Apr 2026 00:00:00 GMTWhat is a Unix Timestamp? Epoch Time Explained Simplyhttps://devutilixy.com/blog/unix-timestamp-explained/https://devutilixy.com/blog/unix-timestamp-explained/Unix timestamps are how computers store time under the hood. This guide explains what they are, why 1970 matters, and how to convert them.Mon, 06 Apr 2026 00:00:00 GMTHow to Decode a JWT Token: Header, Payload & Signature Explainedhttps://devutilixy.com/blog/how-to-decode-jwt/https://devutilixy.com/blog/how-to-decode-jwt/JWT tokens are everywhere in modern APIs. Learn how to manually decode one, what each part contains, and how to check if it has expired.Sun, 05 Apr 2026 00:00:00 GMTWhat is Base64 Encoding? A Plain English Explanation for Developershttps://devutilixy.com/blog/what-is-base64/https://devutilixy.com/blog/what-is-base64/Base64 shows up everywhere — JWT tokens, API keys, email attachments. This guide explains exactly what it is, why it exists, and when to use it.Sat, 04 Apr 2026 00:00:00 GMTHow to Run a Cron Job Every Weekday at 9 AMhttps://devutilixy.com/blog/cron-weekdays-9am/https://devutilixy.com/blog/cron-weekdays-9am/Step-by-step guide to scheduling a cron job Monday through Friday at a specific time. Includes the exact expression and common variations.Fri, 03 Apr 2026 00:00:00 GMTWhat Does * * * * * Mean in Cron? All 5 Fields Explainedhttps://devutilixy.com/blog/what-does-star-mean-cron/https://devutilixy.com/blog/what-does-star-mean-cron/The five asterisks in a cron expression each mean something specific. This guide breaks down every field with examples you can use immediately.Thu, 02 Apr 2026 00:00:00 GMTCron Expression Every 15 Minutes: */15 * * * * Explainedhttps://devutilixy.com/blog/cron-every-15-minutes/https://devutilixy.com/blog/cron-every-15-minutes/Learn exactly what */15 * * * * means, why it runs 96 times a day, and how to customize the interval for 5, 10, or 30 minutes.Wed, 01 Apr 2026 00:00:00 GMT