Developer Formatters
Free online formatters, minifiers, encoders, and converters — all running client-side in your browser.
NxtTls offers a complete set of browser-based formatters, minifiers, encoders, and converters for developers. Every tool runs entirely client-side — your data never leaves your device. Format JSON for debugging, convert CSV to JSON for API imports, encode Base64 tokens, compare JSON diffs, and more.
JSON Diff
Compare two JSON documents — find key and value differences.
Open tool { }JSON Formatter
Format, minify, and validate JSON data.
Open tool < >XML Formatter
Pretty-print or minify XML documents.
Open tool </>HTML Formatter
Beautify or compress HTML markup.
Open tool # {CSS Formatter
Format or minify CSS stylesheets.
Open tool SQLSQL Formatter
Pretty-print SQL queries for readability.
Open tool B64Base64 Encoder/Decoder
Encode or decode Base64 strings instantly.
Open tool %20URL Encoder/Decoder
Encode or decode URL percent-encoded strings.
Open tool CSVJSON → CSV
Convert JSON arrays into CSV format.
Open tool C→JCSV → JSON
Convert CSV rows into a JSON array.
Open tool J→XJSON → XML
Convert JSON objects into XML markup.
Open tool X→JXML → JSON
Convert XML documents into JSON.
Open tool