Developer Tools — Guides & Articles

• Convert JSON to an Excel Table Without Uploading It

  Published 2026-09-07

  Paste a JSON array of objects and download a local .xlsx with columns in first-seen order. No upload, no formula execution, no account.

  

• JSON to CSV API Alternative That Runs Locally in Browser

  Published 2026-09-07

  Looking for a JSON to CSV API alternative? Convert a JSON object array to RFC 4180 CSV locally in your browser — no API keys, no rate limits, no uploads.

  

• Create JSON Schema in Python From a JSON Sample

  Published 2026-09-07

  Generate a Draft 2020-12 JSON Schema in Python from representative JSON, inspect inferred types, nullability, arrays, and required fields, then validate it.

  

• How to Compress a JSON File Safely in Your Browser

  Published 2026-09-07

  Compress a JSON file by removing formatting whitespace with a strict browser tool that rejects duplicate keys, unsafe numbers, and deep nesting.

  

• Format JSON in IntelliJ IDEA: Shortcuts and Browser

  Published 2026-09-07

  Format JSON in IntelliJ IDEA with Reformat Code and a scratch file. Use a browser JSON Formatter to minify, validate, and pinpoint line/column errors.

  

• Compare Two JSON Files: Spot Every JSON Pointer Change

  Published 2026-09-06

  Compare two JSON files with the JSON Diff tool. Read a deterministic change list of added, removed, changed, and type-changed entries at RFC 6901 JSON…

  

• JavaScript Playground API Alternative for Browser Testing

  Published 2026-09-06

  JavaScript playground API alternative: run bounded snippets in a sandboxed worker with network blocked and a 1.5-second timeout, with no signup required.

  

• How to Find the IPv6 Prefix of an Address

  Published 2026-09-06

  Find the IPv6 prefix of any 128-bit value with a local subnet calculator that returns canonical text, network boundary, and exact range size for documentation.

  

• Change IPv4 to IPv6 on Xbox: Mapped Address Guide

  Published 2026-09-06

  Change IPv4 to IPv6 on Xbox by converting addresses to RFC 4291 IPv4-mapped form. See what the converter does, what it does not, and how to read each output.

  

• How to Convert a Decimal IP Address to Hexadecimal

  Published 2026-09-05

  Convert an IPv4 address to hexadecimal through its decimal form. See the base-256 formula, a worked example, and where the IP to Decimal Converter fits.