🔐 Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Convert text, files, images to Base64 format and vice versa. Support for URL-safe encoding, Data URIs, and multiple file formats with professional tools.
Quick Examples
Input Methods
Drop files here or click to browse
Supports all file types up to 10MB (images, documents, etc.)
Note: Due to CORS restrictions, this works best with public APIs and image URLs
Output Results
No Preview Available
Upload an image or enter Base64 data to see preview
How to Use Base64 Encoder/Decoder
Choose Input Method
Select from text input, file upload, or URL fetching. Enter your data or upload files up to 10MB including images and documents.
Configure Options
Choose encoding format (Standard, URL-safe, or MIME), set output preferences, and select text encoding options.
Encode or Decode
Click encode to convert to Base64 or decode to convert from Base64. View results, Data URIs, and image previews.
Copy or Download
Copy results to clipboard, download as files, or use Data URIs directly in HTML, CSS, or JavaScript code.
Powerful Features
Multiple Input Methods
Support for text input, file uploads, and URL fetching. Handle any file type including images, documents, and data files.
Flexible Encoding Options
Choose between Standard, URL-safe, and MIME Base64 formats. Configure line breaks, padding, and text encoding.
Data URI Generation
Automatically generate Data URIs with proper MIME types for direct use in HTML, CSS, and JavaScript.
Live Preview
Preview images and supported file types directly in the browser. See real-time statistics and size comparisons.
Export Options
Copy to clipboard, download as text files, or use generated Data URIs. Multiple output formats available.
Privacy Focused
All processing happens locally in your browser. No data is sent to servers, ensuring complete privacy and security.
Perfect For These Use Cases
Web Development
Embed images, fonts, and assets directly in CSS and HTML using Data URIs. Reduce HTTP requests and improve performance.
Email Development
Embed images in email templates using Base64 encoding. Ensure images display correctly in all email clients.
Data Storage
Store binary data in text-based formats like JSON, XML, or databases. Convert files to Base64 for API transmission.
Mobile Apps
Encode images and assets for mobile app development. Reduce app size by embedding small assets as Base64 strings.
Frequently Asked Questions
What is Base64 encoding and why is it used?
Base64 is a encoding scheme that converts binary data into ASCII text. It's commonly used to embed images in emails, store binary data in text-based formats, and transmit data over protocols that only support text.
What's the difference between Standard and URL-safe Base64?
Standard Base64 uses +, /, and = characters which can cause issues in URLs. URL-safe Base64 replaces + with -, / with _, and often omits padding (=) to make it safe for use in URLs and filenames.
What file types can I encode?
You can encode any file type including images (JPG, PNG, GIF, SVG), documents (PDF, DOC, TXT), data files (JSON, XML, CSV), and more. Files up to 10MB are supported.
How do I use Data URIs in my code?
Data URIs can be used directly in HTML (<img src="data:image/png;base64,...">), CSS (background-image: url(data:...)), or JavaScript. They allow embedding files directly in code without external references.
Is my data secure when using this tool?
Yes, all encoding and decoding happens locally in your browser. No data is sent to our servers or any external services. Your files and text remain completely private and secure.