Base64 Encoder / Decoder — Free Online Tool

Base64 Encoder / Decoder is a free online tool that instantly encodes text and files to Base64 format and decodes them back. It supports UTF-8 text, binary files, and URL-safe mode — all without installing anything or sending your data to a server.

What is Base64 Encoder / Decoder?

Base64 is an encoding scheme that represents binary data in an ASCII string format using 64 printable characters (A-Z, a-z, 0-9, +, /, and = for padding). Encoding is not encryption — it makes binary data safe to transport over text-only channels such as email, JSON APIs, data URLs, and HTML attributes. A decoder performs the reverse operation, turning Base64 text back into its original bytes.

Developers use Base64 every day: embedding small images inline via data:image/png;base64,..., passing binary payloads through JSON, storing hashes, and encoding credentials in HTTP Basic Auth. Our tool handles all of these use cases with a clean, zero-latency interface.

How to use Base64 Encoder / Decoder

1. Type or paste your text, or pick a file from your device to encode byte-for-byte.
2. Choose Encode to convert to Base64, or Decode to convert back to plain text / original bytes.
3. Enable URL-safe mode when the output must appear inside URLs or query strings (replaces + and / with - and _).
4. Copy the result with one click and paste it wherever you need it.

Features

• Encode and decode with a single toggle
• Full UTF-8 / Unicode support, including Arabic and emoji
• File upload for images, PDFs, and other binaries
• URL-safe (Base64URL) variant for query strings and JWTs
• Instant, private, and 100% free — runs locally in your browser

Related tools

If you work with data formats regularly, try our Binary Translator for 0/1 <-> text conversion or the URL Encoder / Decoder for percent-encoding — both work the same way and are equally free.

FAQ

Is Base64 encoding the same as encryption?

No. Base64 is a reversible text representation of binary data. Anyone can decode it without a key. Use it for transport and storage compatibility — never for secrets. For sensitive content, use real encryption.

Does the tool upload my data to a server?

No. Encoding and decoding happen entirely in your browser. Your text and files never leave your device.

Can I encode files larger than text?

Yes. Upload any file and the tool encodes it byte-for-byte to a Base64 string, which you can embed in JSON or data URLs.

What is URL-safe Base64?

Standard Base64 uses + and / characters that need escaping inside URLs. URL-safe Base64 replaces them with - and _ and strips padding, producing strings safe for query parameters and JSON Web Tokens (JWT).

Try the Base64 Encoder / Decoder on Taskly now — it takes less than a second.

Conclusion

Base64 Encoder / Decoder is one of those small utilities that saves developers real time. Whether you are embedding an image, debugging an API payload, or building a JWT, it is just a click away. Bookmark it and skip the command line.

Encode or decode Base64 now.