https://codemirroring.com/tools/Recent content in Tools on Code MirroringHugo -- gohugo.ioen-ushttps://codemirroring.com/tools/base64-encoder-decoder/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/base64-encoder-decoder/Encode plain text to Base64 and decode Base64 back to text. Base64 Encoder / Decoder Encode plain text to Base64 or decode Base64 back to text. Encode Decode Clear Privacy note: conversion runs in your browser only. No data is sent or stored. What Base64 Is (and Is Not) Base64 is an encoding format, not encryption. It converts binary/text data into a text-safe representation for transport. Common Use Cases Email attachments and MIME content.https://codemirroring.com/tools/cron-helper/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/cron-helper/Validate cron expressions and preview upcoming run times. Cron Helper Validate cron expressions and preview upcoming run times in your local timezone. Presets Every minute Every 5 minutes Every hour Every day at midnight Weekdays at 09:00 Every Sunday at 02:30 Explain Cron Preview Next Runs Clear Format: minute hour day-of-month month day-of-week (5 fields). Supports *, ranges (1-5), lists (1,2,3), and steps (*/15). Explanation: - Cron Expression Basics A standard 5-field cron expression follows this order:https://codemirroring.com/tools/epoch-converter/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/epoch-converter/Convert Unix epoch timestamps to date/time and convert date/time back to epoch quickly. Epoch Converter Convert Unix epoch timestamps to date/time and convert date/time back to epoch instantly. Epoch to Date/Time Convert UTC: - Local: - Date/Time to Epoch Convert Use Current Time Seconds: - Milliseconds: - Clear Privacy note: conversion runs only in your browser. We do not send, store, or share your data. What Is Epoch Time? Unix epoch time is the number of seconds (or milliseconds) since 1970-01-01 00:00:00 UTC.https://codemirroring.com/tools/hash-generator/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/hash-generator/Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from input text. Hash Generator (MD5 / SHA) Generate MD5, SHA-1, SHA-256, or SHA-512 for any input text. MD5 SHA-1 SHA-256 SHA-512 Hash output appears here. Privacy note: all hashing is performed in your browser only. What a Hash Function Does A hash function converts input data into a fixed-length fingerprint. If input changes, hash output changes. This is useful for integrity checks and repeatable identifiers.https://codemirroring.com/tools/json-comparer/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/json-comparer/Compare two JSON documents in the browser with a side-by-side normalized diff. JSON Comparison Tool Compare two JSON documents side-by-side after stable key normalization. JSON A JSON B Compare JSON Clear Show only changes Expand all Collapse all Privacy note: JSON comparison runs only in your browser. We do not send, store, or share your data. JSON A JSON B Why JSON Diffs Matter When APIs evolve, small JSON changes can break clients: renamed keys, new nested fields, changed value types, or missing properties.https://codemirroring.com/tools/jwt-decoder/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/jwt-decoder/Decode JWT header and payload quickly in the browser. JWT Decoder Decode JWT header and payload (no signature verification). Decode JWT Privacy note: JWT decoding happens in-browser only. Nothing is uploaded. JWT Structure at a Glance A JSON Web Token has three parts: header.payload.signature The header and payload are Base64URL-encoded JSON. The signature is used to verify integrity. What This Tool Does This JWT decoder helps you inspect header and payload claims quickly during debugging.https://codemirroring.com/tools/regex-tester/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/regex-tester/Test regex patterns with flags and inspect highlighted matches. Regex Tester Test regex patterns with flags and highlight matches. Run Regex Matches will appear here. Privacy note: regex testing runs in your browser only. Why Regex Testing Saves Time Regular expressions are powerful, but small syntax mistakes can cause over-matching, under-matching, or slow patterns. A regex tester gives instant feedback while you iterate. Good Regex Habits Start with a small test sample, then scale complexity.https://codemirroring.com/tools/uuid-generator/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/uuid-generator/Generate secure RFC 4122 version 4 UUIDs for development and testing. UUID v4 Generate UUID Copy Privacy note: UUID generation happens entirely in your browser. We do not send, store, or share your data. What Is a UUID? A UUID (Universally Unique Identifier) is a 128-bit value used to identify records without relying on an auto-incrementing database ID. In most apps, UUID v4 is popular because it is random and collision-resistant for practical use.https://codemirroring.com/tools/xml-comparer/Mon, 01 Jan 0001 00:00:00 +0000https://codemirroring.com/tools/xml-comparer/Compare two XML documents in the browser and quickly check if they match after normalization. XML Comparison Tool Paste two XML documents, compare a normalized side-by-side diff, and collapse sections to focus on what matters. XML A XML B Compare XML Clear Privacy note: XML comparison runs only in your browser. We do not send, store, or share your data. Diff view Show only changes Expand all Collapse all XML A XML B Why XML Comparison Is Tricky Two XML files can look different but still represent the same data.