Base64
Base64 Encode/Decode
Encode text to Base64 or decode Base64 strings back to plain text - instantly, in your browser.
How to Use Base64 Encode/Decode
- 1.Choose Encode or Decode Select whether you want to encode plain text to Base64 or decode a Base64 string.
- 2.Paste your input Enter the text to encode, or the Base64 string to decode.
- 3.View the output The result appears instantly in the output panel.
- 4.Copy the result Click Copy to copy the encoded or decoded value to your clipboard.
Base64 Encode/Decode & JSON Developer Standards
JSON is the standard format for web APIs and modern applications. Using the Base64 Encode/Decode helps you check syntax, catch formatting errors, and keep your data clean and readable.
Zero-Server Security
All data entered into Base64 Encode/Decode runs directly inside your browser sandbox. Nothing is ever sent across the network or saved on remote servers.
Clean & CI/CD Ready
Well-formatted JSON prevents runtime syntax bugs, makes code reviews easier, and ensures smooth API data exchange.
Base64 Encode/Decode Frequently Asked Questions
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 printable ASCII characters (A-Z, a-z, 0-9, +, /). It is used to encode binary data (like images or files) into text form so it can be safely transmitted in text-based systems like email, HTML, or JSON.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It is fully reversible by anyone without a key. Never use Base64 to protect sensitive data - use a proper encryption algorithm instead.
What is URL-safe Base64?
Standard Base64 uses + and / characters which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _, making the encoded string safe to include in URLs without percent-encoding.
Why does Base64 output end with = or ==?
Base64 encodes data in 3-byte groups. If the input length is not a multiple of 3, padding characters (=) are added to make the last group complete. One = means one padding byte was added; == means two.
Can this tool handle large, complex JSON payloads?
Yes. Because the tool operates directly inside modern V8 JavaScript execution engines, it easily processes complex multi-megabyte payloads containing thousands of nested keys with negligible latency.
Are my proprietary payloads or secrets stored or cached?
No. BeYourTools implements zero tracking, zero telemetries, and zero database persistence. Everything stays strictly inside your browser memory and disappears the moment your tab is closed.