Developer Tools — Guides & Articles

• How to Check ANSI Color Codes After You Generate Them

  Published 2026-08-28

  Verify generated ANSI SGR escape sequences by inspecting the escaped view, copying raw control bytes, and testing reset behavior in a real terminal.

  

• How to Make a ZIP File Work in Your Browser Without Uploads

  Published 2026-08-28

  Create a working ZIP archive in your browser with up to 20 files totaling 20 MB. Step-by-step workflow, limits, and what to verify in the result.

  

• Check XPath in Chrome Console Against Any XML

  Published 2026-08-27

  Paste XML, enter an XPath 1.0 expression, and inspect node, string, number, or Boolean matches in your browser — without a live page or $x() hacks.

  

• Convert XML to CSV Without Losing Repeated Fields

  Published 2026-08-27

  Convert XML to CSV locally with the XML to CSV Converter. Specify the record element; attributes, repeats, and formula protection are handled on import.

  

• Format XML Data in Notepad++ Without a Plugin

  Published 2026-08-27

  Format XML data from Notepad++ using a browser-based formatter. Choose 2-space, 4-space, or tab indentation and copy clean XML back to your editor.

  

• Convert .properties Files to JSON Online

  Published 2026-08-24

  Paste Java .properties text and convert it to safe pretty JSON in your browser. Handles continuations, escapes, comments, and duplicate keys without uploading.

  

• Random MAC Address On or Off: A Developer Guide

  Published 2026-08-23

  Decide when to turn a random MAC address on or off in your dev environment and generate locally administered test addresses safely in your browser.

  

• Generate a JWT for Testing: HS256 Tokens in Your Browser

  Published 2026-08-23

  Generate JWT tokens for testing in your browser using a fixed HS256 header, strict JSON claims, and a 32-byte UTF-8 secret — no server, no upload.

  

• How to Decode JWT Tokens in Angular Apps

  Published 2026-08-23

  Decode a JWT token in Angular with atob and JSON.parse, inspect the header and payload locally, and use a browser tool to debug claims during development.

  

• JSON Schema to Zod: Inference Limits and a Safer Path

  Published 2026-08-22

  JSON Schema to Zod converter: sample inference reads one JSON value and emits source, but skips formats, ranges, and enums. Verify before shipping.