Convert, encode, and decode with precision. All tools process data client-side for complete privacy and security.
Encode plain text or files to Base64 format
Click to upload file
Any file type supported
Choose from our comprehensive collection of Base64 conversion tools
Convert audio file to Base64
Convert Base64 to audio file
Convert Base64 to video file
Convert video file to Base64
Convert Base64 to ZIP file
Convert ZIP file to Base64
Convert Base64 to DOCX file
Convert DOCX file to Base64
Convert Base64 to XLSX file
Convert XLSX file to Base64
Convert Base64 to CSV file
Convert CSV file to Base64
Convert images to Base64
Convert Base64 to images
Convert SVG to Base64
Convert Base64 to SVG
Convert HTML to Base64
Convert Base64 to HTML
Convert text file to Base64
Convert Base64 to text file
Convert PDF to Base64
Convert Base64 to PDF
Decode to JSON format
Encode JSON to Base64
Decode to XML format
Encode XML to Base64
Convert to hexadecimal
Convert from hexadecimal
Convert Base64 to Unicode
Convert Unicode to Base64
Convert Base64 to UTF-8
Convert UTF-8 to Base64
Convert to binary
Convert from binary
Convert to ASCII codes
Convert from ASCII
Validate and check Base64 format
Calculate Base64 string length and size
Test Base64 compression efficiency and size
Inspect and analyze Base64 string information
Your trusted solution for secure, fast, and reliable Base64 encoding and decoding operations
All conversions happen locally in your browser. Your data never leaves your device.
Instant conversions with optimized algorithms. No server delays or waiting times.
Start converting immediately. No sign-up, no tracking, no hassle required.
All 18+ tools are completely free. No premium tiers or hidden costs.
Base64 is a binary-to-text encoding scheme that converts binary data into ASCII string format. It's widely used in web development, email systems, and data transfer protocols to safely transmit binary data over text-based channels.
Our Base64 Converter provides a comprehensive suite of 18+ specialized tools for encoding and decoding various data types including text, images, PDFs, JSON, XML, HEX, binary, and more. Whether you're a developer, designer, or just need to convert some data, we've got you covered.
All conversions are performed client-side using JavaScript, ensuring your sensitive data remains private and secure. No data is ever uploaded to our servers.
Everything you need to know about Base64 encoding and our tools
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Base64Converter.online - Your trusted free online tool for all Base64 encoding and decoding needs. Supporting multiple formats including images, PDFs, JSON, XML, HEX, binary, and more.
See what our users are saying about Base64 Converter
"This is hands down the best Base64 converter I've used. Fast, secure, and completely free. The variety of tools available is impressive!"
Sarah Chen
Web Developer
"Love that everything happens client-side. No more worrying about uploading sensitive data to random servers. The UI is beautiful too!"
Michael Rodriguez
Software Engineer
"The JSON and XML converters are exactly what I needed for my work. Simple, reliable, and always available. Highly recommend!"
Emily Watson
Data Analyst
"Perfect for converting images to data URIs. Saves me so much time in my daily workflow. Thank you for making this free!"
David Kim
Frontend Developer
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