Developer Tools

Developer Tools

47 tools. Your files and what you type are never sent anywhere — everything runs on your phone or computer.

What would you like to do?

47 tools available.

Convert 12

Base64 Encode / DecodeEncode text as Base64 or decode Base64 back to text.
Base64 to Downloadable File ConverterConvert raw Base64 strings into downloadable binary files with custom filenames and MIME types.
CSV to JSON ConverterConvert CSV and TSV tabular text into structured JSON arrays of objects.
Data URI Decoder & ParserParse and decode data: URIs, extracting the MIME type, encoding scheme, decoded byte length, and text contents.
HTML Entity Encode / DecodeConvert characters such as <, & and " to HTML entities or back.
JSON to CSV ConverterConvert a JSON array of objects into a CSV table or an Excel (.xlsx) file.

Create 7

Organize & Edit 11

Calculate & Analyze 1

IPv4 Subnet CalculatorNetwork, broadcast, host range and count, and subnet mask from a CIDR.

Inspect & Extract 16