base64 converter
base64 converter

Base64 Pro

Advanced Base64 Encoding/Decoding Tool

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Base64 Pro © 2023 | All conversions happen in your browser (no data is sent to servers)

Base64 Encode & Decode Tool

Convert text, files, and binary data to and from Base64 format with our fast, secure, and privacy-respecting Base64 encoder and decoder. Ideal for developers, security professionals, and anyone working with data transformations.

Secure In-Browser Conversion

All encoding and decoding actions are performed directly in your browser using client-side JavaScript. This ensures that your text, files, or sensitive data never leave your device. Unlike online converters that upload data to remote servers, our Base64 tool works entirely offline after initial load, offering complete data privacy.

  • Zero data transmission to external servers
  • Perfect for encoding passwords, tokens, and secure data
  • No installation or sign-up required

Two-Way Conversion: Encode and Decode

Easily switch between encoding and decoding modes. Whether you're converting a string into Base64 for use in APIs, email attachments, or embedded web data, or decoding a Base64 string back to readable text or binary — our tool does it all in a single interface with instant results.

  • Encode text, files, or data into Base64 format
  • Decode Base64 back into text or binary content
  • Toggle modes with one click

Developer-Friendly Utility

Base64 encoding is widely used in programming for embedding images, files, or binary blobs in JSON, XML, or HTML. Developers rely on Base64 to handle data transfers where textual representation is required. Our tool supports encoding of large strings, UTF-8 content, and provides clean output that can be easily used in source code or APIs.

  • Ideal for API testing, debugging, and prototyping
  • Supports UTF-8 and multi-line inputs
  • Outputs clean, line-wrapped Base64 when needed

File Support for Binary Encoding

Upload any file and convert it to Base64 in seconds. This is especially useful for developers needing to embed images in HTML/CSS, generate data URIs, or transmit file data over text-based channels. You can also decode Base64-encoded files back to their original form and download them instantly.

  • Supports images, PDFs, ZIPs, and more
  • Base64 string preview with copy/download options
  • Converts Base64 back to usable files instantly

Advanced Options and Customization

Tailor the conversion output to your needs. Enable line wrapping for long strings, choose between standard Base64 or URL-safe encoding, and strip or include padding characters. These options make the tool flexible for email encoding, JWT payloads, or web embedding.

  • Toggle padding (`=`) characters
  • Enable line breaks at 76 characters
  • Switch between standard and URL-safe Base64

Fast, Lightweight, and Instant

Experience ultra-fast conversions without lag or delays. Our tool is built for speed and responsiveness, whether you're encoding a small string or decoding a long data URI. Because it runs entirely in your browser, there’s no network delay and no dependency on internet connection once loaded.

  • No backend server latency
  • Works on all modern browsers
  • Mobile and desktop compatible

Text and Multilingual Support

Encode or decode multilingual text and special characters seamlessly. Our tool fully supports Unicode and UTF-8, making it perfect for working with internationalized content, emojis, and symbols. It ensures that your output remains accurate and reliable no matter the input language.

  • Encode/decode UTF-8 special characters
  • Supports emojis and symbols
  • Converts complex text without data loss