Base64 Encoder & Decoder Online Free
Encode text to Base64 or decode Base64 back to readable text instantly. Convert text, JSON, HTML, URLs and files directly in your browser.
Input
Encode File to Base64
Upload a text, JSON, SVG, image or small file to convert it into Base64.Quick Examples
Output
Preview
How to Use the Base64 Encoder & Decoder
Convert text, code and files to or from Base64 in three simple steps.
1. Paste your input
Enter text, JSON, HTML, a URL or a Base64 string into the input box.
2. Choose the mode
Select Encode to create Base64 or Decode to convert Base64 back into readable text.
3. Copy or download
Copy the result instantly or download the output as a text file.
Encode and decode Base64 directly in your browser.
Base64 is commonly used by developers when working with APIs, data transfer, email encoding, JSON payloads, tokens, images and small embedded files.
This tool helps you quickly convert readable text into Base64 and decode Base64 strings back into plain text without installing software.
What is Base64?
Base64 is an encoding method that represents binary or text data using readable ASCII characters. It is often used when data needs to be stored or transferred in systems that work best with plain text.
Common use cases include API payloads, email attachments, small image embedding, authorization data, configuration files and data URLs.
When should you use Base64?
- Encoding text for API testing
- Decoding Base64 strings from logs or responses
- Embedding small images as data URLs
- Working with JSON, XML or HTML snippets
- Testing tokens, payloads and encoded values
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Base64 Encoder & Decoder FAQ
Common questions about Base64 encoding and decoding.
What is Base64 encoding?
Base64 encoding converts text or binary data into a readable ASCII string that can be safely transferred through text-based systems.
Is Base64 the same as encryption?
No. Base64 is not encryption. It is only encoding, which means anyone can decode it if they have the encoded string.
Can I decode Base64 back to text?
Yes. Choose Decode mode, paste the Base64 string and the tool will convert it back into readable text when possible.
Can I encode files to Base64?
Yes. Use the file upload option to convert a file into Base64 directly in your browser.
What is URL-safe Base64?
URL-safe Base64 replaces characters that can be inconvenient in URLs, such as plus and slash, with safer alternatives.
Does this tool upload my data?
No. The conversion runs inside your browser. Your text and files are not uploaded to a server by this tool.