Tips, tutorials and updates
Generate a version 4 or version 7 UUID in your browser, with no signup and no data leaving your device, and pick the right version in seconds.
Format your CSS source, minify it into a separate build file, and deploy only the compact version without ever losing the readable original.
Format a raw API response in your browser to find the exact path and type of a broken field, then fix it without guesswork.
Format your HTML consistently with practical indentation, attribute wrapping and nesting rules that keep markup readable as your files grow.
Format messy queries into clean, scannable SQL with consistent indentation, keyword casing and join layout, so reviews and debugging take minutes instead of hours.
An IP lookup is fast and free, but this guide shows exactly what it can and cannot reveal before you trust the result.
Validate and format JSON in your browser with instant error positions, no upload and no account required.
Minified code that only fails in production is usually a name, string, or dead-code assumption — this guide shows you how to find and fix it fast.
Check your public and private IP addresses in seconds, understand what each one reveals, and learn when sharing it is safe.
Reformat scrambled or minified HTML in three steps, keep your markup off remote servers, and commit a clean, reviewable diff.
Compress an oversized PDF in your browser, cut it down for email or upload limits, and keep the original quality where it matters.
Convert web articles to Markdown without broken formatting, lost links or stray navigation, and get clean files ready for notes, docs or a static site.
Browse all articles by topic
Hands-on tutorials broken down by tool: what problem each one solves, how to use it, and the pitfalls to avoid — with step-by-step instructions you can follow right away.
The details that double your efficiency: shortcuts, parameter combinations, batch-processing approaches and the habits that genuinely save time at work.
Technical deep dives into encoding, data formats and engineering practice — focused on principles and reasoning rather than recipes.
Free text processing, PDF tools, AI writing and more