Is it safe to encode binary files?

Base64 String & File Suite

Developer Utilities

Convert text, UTF-8 strings, and image/document files into Base64 format and Data URIs. Decode Base64 strings with live preview and download capabilities.

100% Client-Side

URL-Safe (Base64URL)

Input Plain Text (UTF-8)

Base64 Encoded Output

Zero-Knowledge Privacy Guarantee

This Base64 String & File Suite executes 100% locally in your browser’s JavaScript memory using client-side Web APIs. No inputs, keys, tokens, files, or outputs are ever uploaded to any server or logged in any database.

Key Features & Capabilities

UTF-8 safe text string encoding and decoding
File to Base64 and Data URI converter (with <img> preview for images)
URL-safe Base64URL encoding option
1-click copy formatted for CSS, HTML, or JSON payloads

How to Use This Tool

1Choose Text Mode or File Mode.
2Select Encode or Decode.
3Enter text or drop a file to get the instant Base64 string or Data URI.

Frequently Asked Questions (FAQ)

Yes! Files are read in-memory using FileReader.readAsDataURL and never sent over the network.

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