Tool Guides & Blog

How-tos, tips, and guides for using NxtTls formatters, converters, and free online tools.

• Finance20 June 2026·5 min read

  Tamil Nadu Petrol & Diesel Price Guide — Why Rates Differ by State

  A breakdown of how petrol and diesel are priced in Tamil Nadu, what taxes apply, and how to track daily changes on NxtTls.

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• Finance18 June 2026·5 min read

  How to Read Gold Rates in Chennai — A Daily Guide

  Understand 24K, 22K, and 18K gold pricing in Chennai, what drives daily changes, and how to use NxtTls to track rates before buying.

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• Developer Tools17 June 2026·4 min read

  HTML Formatter Guide for Web Developers — Beautify & Minify

  Clean up messy HTML or compress it for production using the NxtTls HTML Formatter — a free, browser-based tool for developers.

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• Developer Tools16 June 2026·5 min read

  How to Compare JSON Online — Find Key and Value Differences

  Spot added keys, removed fields, and changed values between two JSON documents instantly with a free browser-based diff tool.

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• Developer Tools15 June 2026·4 min read

  How to Compress Images Online Without Losing Quality

  Reduce image file size by up to 80% using NxtTls Image Compressor — no uploads to a server, everything runs in your browser.

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• 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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• 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.

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• 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.

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• 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.

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• 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.

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