Base64 Online decode & Encode

Image to Base64 Converter

Upload an image to generate its Base64 data URL for use in HTML image tags.

Click to upload or drag and drop

PNG, JPG, GIF (MAX. 5MB)

Base64 Data URL

Base64 to Image Converter

Paste a Base64 data URL to convert it back to an image.

Base64 Data URL

Base64 to Text Decoder

Paste your Base64 encoded string to decode it back to the original text.

Base64 Encoded Text

Decoded Text

RFC 2047 Email Subject Decoder

Parse email subjects encoded with RFC 2047 (like =?utf-8?B?...?=) into readable text.

Encoded Email Subject

Decoded Text

RFC 2047 Email Subject Encoder

Encode email subjects using RFC 2047 format (like =?utf-8?B?...?=).

Original Text

RFC 2047 Encoded Text

This web application offers a collection of essential encoding/decoding tools for developers. You can convert images to Base64 strings for embedding directly in HTML, encode/decode text to Base64 format, and encode/decode URLs. All processing happens instantly in your browser with no server-side processing required, ensuring your data remains private and secure.

This site provides secure client-side processing for all conversions. Your data never leaves your browser - all encoding, decoding, and transformations happen locally in JavaScript. We support Base64 operations for text and images, as well as URL encoding/decoding. The tools are designed to be fast, private, and work entirely offline after loading.

Base64 Utilities

Image to Base64 Converter

Image Preview

Base64 to Image Converter

Converted Image

Base64 to Text Decoder

Text to Base64 Encoder

URL Encoder

URL Decoder

RFC 2047 Email Subject Decoder

RFC 2047 Email Subject Encoder