Base64 Encoder/Decoder — by BitTools
Encode or decode Base64. 100% client-side. No data leaves your browser.
How to use
- Enter your text (or Base64 string) in the left input box.
- Click Encode to convert text to Base64.
- Click Decode to convert Base64 back to plain text.
- You can also Copy or Download the result instantly.
About This Online Base64 Tool
This free online Base64 encoder/decoder bu bitTools.cc helps you quickly convert text to Base64 and back. All operations happen directly in your browser — 100% secure and private.
👉 Read More Online Base64 encoder by BitTools.cc
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It is commonly used to encode data for storage or transfer over media that only support text, such as JSON, XML, or email.
How Does Base64 Work?
Base64 works by dividing the input data into groups of 3 bytes (24 bits). Each 24-bit group is then split into four 6-bit segments. Each 6-bit segment is mapped to a specific character in the Base64 index table.
FAQs about Base64
🔹 Why is Base64 used?
Base64 ensures that binary data (like images, files, or cryptographic values) can be transmitted safely over systems that only support text-based data.
🔹 Is Base64 encryption?
No. Base64 is not encryption. It is just an encoding method. The data can be easily decoded.
🔹 What are common uses of Base64?
Base64 is widely used in embedding images in HTML/CSS, storing binary files in JSON, email attachments (MIME), and in web APIs.
🔹 Is Base64 secure?
No, Base64 only converts data into a text-friendly format. It does not provide confidentiality or security.
🔹 Can Base64 increase file size?
Yes. Base64 encoding increases the size of the original data by approximately 33%.