Developer Tools
Format, validate and convert developer data without sending it to a server.
Browse 24 free developer tools from Toolsiva.
Base64 Decode
Decode Base64 into readable Unicode text.
Base64 Encode
Encode Unicode text as Base64.
JSON Formatter
Format and indent JSON for easier reading.
JSON Validator
Check whether JSON is valid and locate syntax errors.
Unix Timestamp Converter
Convert Unix timestamps to dates and dates back to timestamps.
UUID Generator
Generate secure random UUID version 4 values.
XML Formatter
Format XML with readable indentation.
Binary Code Translator
Convert UTF-8 text to binary bytes and decode binary back to text.
HTML Decode
Convert HTML entities back into readable characters.
HTML Encode
Convert special characters into HTML entities.
JSON Escape
Escape text so it can be safely included in a JSON string.
JSON Minifier
Remove whitespace from JSON and create compact output.
JSON to CSV
Convert an array of JSON objects into CSV.
JSON to XML
Convert JSON objects and arrays into readable XML.
JSON to YAML
Convert JSON data into readable YAML.
JSON Unescape
Convert escaped JSON string content back to readable text.
JWT Decoder
Decode JWT headers and payloads without verifying signatures.
Markdown Table Generator
Create Markdown tables with editable rows, columns and alignment.
Regex Tester
Test regular expressions against sample text with flags and match details.
URL Decode
Decode percent-encoded URL text into readable content.
URL Encode
Encode text for safe use in URLs and query strings.
UTM URL Generator
Build campaign URLs with UTM source, medium, campaign and optional tags.
XML Validator
Check whether XML is well-formed.
YAML Validator
Check common YAML syntax and indentation issues.