html69 // blog

Notes from the tools.

Short write-ups on converting YAML and JSON, mapping CSS to Tailwind, encoding SVG, and keeping files on this device. Every tool still runs in your browser.

Nov 14, 2026YAML

How to Convert YAML to JSON Manually

Tired of invisible YAML whitespace breaking your deployments? Learn how to manually convert YAML to JSON in Node.js, Python, and the terminal—or use our free client-side converter.

Nov 12, 2026CSS

Paste CSS, get Tailwind classes

Turn raw CSS declarations or HTML inline styles into Tailwind utilities without a build step. The conversion runs in your tab.

Nov 10, 2026SVG

SVG to Base64 and CSS data URIs

Encode an SVG as Base64 or a CSS data URI, then decode a data URI back to markup — all in the browser.

Nov 8, 2026Privacy

Files stay on this device

html69 tools read files with FileReader in your tab. There is no account, no API upload, and a 50,000 character cap so a huge dump cannot freeze the page.