A collection of free online tools for developers. All processing happens in your browser - your data never leaves your computer.
Beautify, minify, and validate JSON data. Syntax highlighting with error detection.
Open Tool →Encode text to Base64 or decode Base64 to text. UTF-8 safe with file upload support.
Open Tool →Convert CSV data to JSON format. Supports nested objects, custom delimiters, and file upload.
Open Tool →Remove duplicates, trim whitespace, delete empty rows from CSV files. Free and fast.
Open Tool →Check out our premium products. Your support keeps these tools free.
Advanced CSV cleaning - From $9
AI prompt manager - $15
Notion productivity - $12+
Subscription tracker - $5+