Developer Tools14 June 2026·5 min read
CSV to JSON (and Back): A Practical Guide for Spreadsheets & APIs
Export from Excel or Google Sheets, avoid common CSV pitfalls, and convert data for APIs using NxtTls — free and in your browser.
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How-tos, tips, and guides for using NxtTls formatters, converters, and free online tools.
- Developer Tools7 June 2026·5 min read
How to Read XML API Responses — Format, Validate, Convert to JSON
Pretty-print legacy XML, spot structure errors, and convert to JSON for modern apps — all with free browser-based tools.
Read article - Developer Tools31 May 2026·4 min read
How to Format and Validate JSON Online
Learn to pretty-print, minify, and validate JSON in your browser with NxtTls — no signup, no server uploads.
Read article - Media Tools28 May 2026·5 min read
Extract Audio from Video — MP3, WAV, AAC Free
Convert MP4, MOV, or MKV to audio with quality presets. What formats work, file limits, and privacy notes.
Read article - Developer Tools25 May 2026·6 min read
Developer Formatters: JSON, XML, HTML, CSS & More
A quick guide to NxtTls formatters — when to use each tool, client-side privacy, and keyboard shortcuts.
Read article - Developer Tools22 May 2026·4 min read
Base64 & URL Encoding Explained for Developers
When to encode, common pitfalls, and how to decode strings safely using free online tools.
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