Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to readable text.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to readable text.
About this base64 encoder/decoder
This tool encodes text to Base64 and decodes Base64 back to readable text. Base64 represents data with a safe set of characters, which is why it turns up in data URLs, API payloads, email attachments, and configuration fields that cannot carry raw bytes.
Use it to inspect an encoded value you received, or to produce a Base64 string to drop into a snippet or config. Keep one thing in mind: Base64 is encoding, not encryption — anyone can decode it — so never treat it as a way to hide passwords, tokens, or private data.
Common uses
- Decode a Base64 string from an API response, token, or config to read its contents.
- Encode text into Base64 for a data URL, snippet, or configuration field.
- Inspect or sanity-check encoded values while debugging.
Helpful tips
- Base64 is reversible encoding, not security; never use it to conceal secrets.
- If decoded output looks like gibberish, the source may be binary, compressed, or encrypted.
- Watch for URL-safe Base64 variants that swap a couple of characters in some systems.
How to use Base64 Encoder/Decoder
- Paste or enter a small code, data, text, URL, or configuration sample before using Base64 Encoder/Decoder on a larger task.
- Remove secrets, tokens, private URLs, customer data, and production credentials before testing examples online.
- Run the tool and review the generated code or data for syntax, escaping, formatting, and target-environment compatibility.
- Copy the result into a test file, sandbox, API client, or staging environment before using it in production.
- Use related developer tools when you need to format, encode, decode, minify, inspect, or validate another step.
Frequently asked questions
Is Base64 the same as encryption?
No. Base64 is reversible encoding that anyone can decode. It makes data text-safe for transport but provides no security, so never use it to hide passwords or tokens.
Why does my decoded Base64 look unreadable?
The original value was probably not plain text. It may be binary, compressed, or encrypted data that only makes sense to the program that created it.
Is Base64 Encoder/Decoder free, and does it work on mobile?
Yes. Base64 Encoder/Decoder is free to use on JustBloc with no account or installation, and the page is designed to work on desktop, tablet, and mobile browsers.