Skip to main content

Free Online Base64 Decoder

Decode Base64 strings back to readable UTF-8 text or downloadable binary files.

Decode standard or URL-safe Base64 strings
Client-Side Guarantee: Processed 100% locally in your browser. No files or data are uploaded.

How to Use the Base64 Decoder

  1. Paste your Base64 string.
  2. Decoded text or image renders automatically.
  3. Copy text or download reconstructed file.

Key Features

UTF-8 text decoding
Data URL image previewer
Handles padding (=) automatically
Error detection for invalid Base64

About Base64 Decoder

Decode Base64 encoded strings back into clean UTF-8 text. Automatically detects Base64 image data URLs and previews the rendered image.

Frequently Asked Questions

Can it decode Base64 images?

Yes! If you paste a data:image Base64 string, the image will be rendered on-screen with a download button.

Discover complementary utilities for your current workflow.

Base64 Encoder & Decoder

Encode plain text or binary files into Base64 strings, or decode Base64 back into readable text or downloadable files.

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) headers, payloads, and claims locally in your browser.

URL Decoder

Decode percent-encoded URLs and query strings back to human-readable strings.

JSON Validator

Validate JSON syntax against RFC 8259 standards with line-by-line error messages.

JSON Minifier

Compress and minify JSON data by stripping all whitespace and unnecessary characters.