Base64 Encoder / Decoder
Encode/decode text, files, and images to/from Base64 with copy/download and image preview.
Input
Output
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Frequently Asked Questions
Is the conversion secure?
Yes, it runs entirely in your browser and does not upload files.
Base64 Encoder / Decoder: Safe Conversion for Text, Files, and Images
Base64 encoding is commonly used to transmit binary data (like images or files) over text‑only channels such as JSON, HTML, or URLs. This Base64 tool lets you convert between raw content and Base64 without relying on external servers, making it ideal for debugging APIs, front‑end code, and configuration values.
Use it alongside the JWT Decoder when working with tokens that contain embedded Base64 segments, or with the JSON Formatter when transporting Base64 inside JSON payloads.
Common Base64 Use Cases
Developers
- • Embedding small images as data URIs in HTML/CSS
- • Encoding credentials or API keys for basic auth headers
- • Transporting binary blobs through JSON or environment variables
Security & Ops
- • Decoding Base64 in logs during incident response
- • Verifying encoded secrets before deployment
- • Inspecting Base64 payloads in JWTs and other tokens