Developer Tools — Guides & Articles

• Set Up a Shortcut for Arrow Functions in VS Code

  Published 2026-10-04

  VS Code has no built-in arrow function shortcut. Configure a user snippet for fa or far and pair it with the right default editing keys for your platform.

  

• Generate UUID in PostgreSQL With gen_random_uuid()

  Published 2026-10-04

  Generate a UUID in PostgreSQL with the built-in gen_random_uuid() function, the uuid-ossp extension, or a column DEFAULT — with copy-ready SQL.

  

• Parse a URL in Python and Verify It Against the Browser

  Published 2026-10-04

  Python's urllib.parse parses a URL into six fields, but the browser's WHATWG parser often returns different values. Use URL Parser to compare.

  

• How to Convert Unix Timestamp to Date in Python

  Published 2026-10-03

  Convert Unix timestamps to dates in Python. Identify seconds vs milliseconds, read ISO 8601 and UTC, and decode epoch values fast.

  

• Decode ULID Timestamps in Bulk Without an API

  Published 2026-10-03

  Decode ULID timestamps in bulk locally. Generate monotonic batches with shared millisecond timestamps, or paste a canonical ULID for its UTC instant.

  

• Convert Text to HTML Paragraphs: Cheat Sheet

  Published 2026-10-03

  Plain text to HTML paragraphs cheat sheet: blank lines separate p, line breaks become br or spaces, three reserved characters are escaped locally.

  

• Is an SVG to Base64 Converter Safe to Use Online?

  Published 2026-10-03

  A safety-focused look at online SVG to Base64 converters: what risks Base64 does and does not remove, how browser-local tools keep input private, and what…

  

• How to Calculate a Subnet in a Network: Full Method

  Published 2026-10-02

  Calculate a subnet from any IPv4 address and CIDR prefix. Get the network, broadcast, host range, and RFC 1918 status using a local subnet calculator.

  

• Separate Excel Sheets Into Different Windows and Files

  Published 2026-10-01

  Split every worksheet from a local .xlsx workbook into separate data-only .xlsx files, packaged in one ZIP download — all processed in your browser.

  

• Format XML From Notepad++ When the Plugin Fails

  Published 2026-10-01

  Format XML from Notepad++ when XML Tools won't install. A browser-based XML Formatter pretty-prints or minifies XML with no setup and no upload.