DailyITTools guideshttps://www.dailyittools.com/learnA private troubleshooting workbench for IT engineers. Fast, local-first tools with clear verification and data-handling notes.en-gbThu, 16 Jul 2026 12:00:00 GMTBase64 is encoding, not encryptionhttps://www.dailyittools.com/learn/base64-is-encoding-not-encryptionhttps://www.dailyittools.com/learn/base64-is-encoding-not-encryptionLearn what Base64 changes, why it provides no confidentiality and how padding, Unicode and binary data cause common decoding failures.Thu, 16 Jul 2026 12:00:00 GMTCommon JSON errors and how to fix themhttps://www.dailyittools.com/learn/common-json-errors-and-how-to-fix-themhttps://www.dailyittools.com/learn/common-json-errors-and-how-to-fix-themDiagnose missing commas, invalid quotes, trailing commas, broken escapes and unexpected tokens without guessing or rewriting the whole payload.Thu, 16 Jul 2026 12:00:00 GMTHow to validate JSON without uploading sensitive datahttps://www.dailyittools.com/learn/validate-json-without-uploading-sensitive-datahttps://www.dailyittools.com/learn/validate-json-without-uploading-sensitive-dataA safe, repeatable method for validating JSON locally, interpreting parser errors and recording useful evidence without exposing production payloads.Thu, 16 Jul 2026 12:00:00 GMTHow to write a reproducible technical troubleshooting notehttps://www.dailyittools.com/learn/reproducible-technical-troubleshooting-notehttps://www.dailyittools.com/learn/reproducible-technical-troubleshooting-noteCapture observations, safe evidence, environment and next steps so another engineer can reproduce the investigation without receiving secrets or customer data.Thu, 16 Jul 2026 12:00:00 GMTJSON versus YAML: how to convert without changing meaninghttps://www.dailyittools.com/learn/json-versus-yaml-safe-conversionhttps://www.dailyittools.com/learn/json-versus-yaml-safe-conversionUnderstand quoting, scalar types, duplicate keys, anchors and multi-document input before converting configuration between JSON and YAML.Thu, 16 Jul 2026 12:00:00 GMTJWT decoding versus verification: what the result actually proveshttps://www.dailyittools.com/learn/jwt-decoding-versus-verificationhttps://www.dailyittools.com/learn/jwt-decoding-versus-verificationLearn why readable JWT claims are not trustworthy until the signature, algorithm, issuer, audience and time rules are verified in the correct security context.Thu, 16 Jul 2026 12:00:00 GMTSHA-256 versus HMAC: integrity, authentication and common mistakeshttps://www.dailyittools.com/learn/sha256-versus-hmachttps://www.dailyittools.com/learn/sha256-versus-hmacUnderstand why a plain hash cannot authenticate a message and how HMAC combines a secret key with a hash for integrity and origin checks.Thu, 16 Jul 2026 12:00:00 GMTUnderstanding JWT exp, nbf and iat time claimshttps://www.dailyittools.com/learn/understand-jwt-time-claimshttps://www.dailyittools.com/learn/understand-jwt-time-claimsConvert JWT NumericDate values correctly and diagnose expiry, not-before and issued-at failures without confusing time zones or clock skew.Thu, 16 Jul 2026 12:00:00 GMTUnix timestamps for incident response and log correlationhttps://www.dailyittools.com/learn/unix-timestamps-for-incident-responsehttps://www.dailyittools.com/learn/unix-timestamps-for-incident-responseConvert epoch values reliably, distinguish seconds from milliseconds and correlate events across UTC, local time and systems with clock drift.Thu, 16 Jul 2026 12:00:00 GMTURL encoding: a practical guide for query strings and pathshttps://www.dailyittools.com/learn/url-encoding-practical-guidehttps://www.dailyittools.com/learn/url-encoding-practical-guideUnderstand percent-encoding, plus signs, reserved characters and double-encoding before constructing or diagnosing web requests.Thu, 16 Jul 2026 12:00:00 GMT