File to Base64

File to Base64

Instantly encode any file to a Base64 string or Data URI.

Image to Base64

Convert images to Data URI for direct use in HTML, CSS, or JSON.

SVG to Base64

Encode SVGs to a Base64 Data URI for CSS backgrounds or inline use.

Font to Base64

Embed web fonts in CSS @font-face without extra HTTP requests.

PDF to Base64

Encode PDFs to Base64 for API transfer or inline embedding.

Text to Base64

Encode text to Base64, Base64URL, Data URI, or JSON.

Base64 to File

Decode a Base64 string back to the original file and download it.

Base64 to Text

Decode a Base64 string to UTF-8 or ASCII text.

Base64 to SVG

Decode a Base64-encoded SVG and preview it in the browser.

Base64 to HTML

Decode Base64 to HTML with sandboxed preview, copy source, and download .html.

Data URI Generator

Automatically adds the correct MIME type prefix to create a complete Data URI.

Base64 Size Calculator

Estimate the encoded size and overhead before converting.

Base64URL Encoder

Encode and decode URL-safe Base64URL for JWT and Web APIs.

Base64 MIME Types

Look up the MIME type for a file extension and copy the Data URI prefix.

Base64 Padding Tool

Check and fix = padding in Base64 strings, with Base64URL conversion.

Base64 Data URI

Parse a Data URI's MIME and size, or build a Data URI from a Base64 string.

Base64 Validator

Check if a Base64 string is valid — detect type, MIME, byte count, and error position.

Base64 Cleaner

Strip quotes, newlines, JSON escapes, and Data URL prefix to get clean Base64.

Base64 for API

Generate a JSON payload with JS, cURL, Python, and PHP code examples.

Base64 for Email

Compare Base64 inline images, CID attachments, and hosted images for email.

JWT Decoder

Decode JWT header and payload, inspect claims and expiry.

Base64 vs URL Encoding

Understand the differences between Base64, Base64URL, and percent-encoding.

Hex to Base64

Convert hex strings to Base64 or Base64URL, with 0x prefix and separator support.

Base64 to Hex

Decode Base64 to hex — plain, space-separated, or 0x format.

JSON to Base64

Encode a JSON object to Base64 or Base64URL with JS/Node.js code snippets.

Base64 to JSON

Decode Base64 or Base64URL to JSON with auto-formatting and JWT payload support.

HTML to Base64

Encode HTML to Base64, with iframe embed code and browser download link.

File Hash Generator

Generate SHA-256, SHA-1, and MD5 checksums in the browser and verify file integrity.

What is Base64?

Detailed explanation of Base64 encoding with alphabet breakdown and interactive demo.

Base64 Examples

20 categorized examples: text, image, PDF, JWT, API, and more.

Base64 FAQ

Full-site FAQ hub covering encoding, Data URI, error debugging, JWT, and more.

Base64 File Encoding

How files go from binary to Base64, how much they grow, and when to use it.

Large File Base64 Guide

Why large files don't suit Base64, and when multipart or object storage is better.

Blob URL vs Data URL

Compare these two browser file URL types by shape, lifecycle, and use case.