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Base64 Encoder and Decoder

Encode text into Base64, decode Base64 back to readable text, and prepare URL-safe or data URL output in one focused workspace.

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Base64 workspaceReady

Choose encode or decode, inspect byte size, switch URL-safe output, and copy the exact result without leaving the page.

Input bytes

Output length

Size change

+39.1%

Detected format

Standard

Quick examples

Input

Paste text, JSON, tokens, or Base64. Examples below fill the right mode automatically.

Source text

Result

The result updates live. Copy, download, or send it back to the input for the opposite conversion.

Base64 output

R29nb3RlbSBkZXZlbG9wZXIgdG9vbHM=

Byte preview

47 6f 67 6f 74 65 6d 20 64 65 76 65 6c 6f 70 65 72 20 74 6f 6f 6c 73

Text preview

Gogotem developer tools

Conversion options

Tune the output for APIs, JWT-style values, emails, or data URLs.

Output format

Keep = paddingStrict Base64 validationWrap output linesBuild data URL

Line lengthMIME type

Before you paste it elsewhere

Use URL-safe mode for JWT segments, URL parameters, and filenames.
Keep padding when the receiving system expects strict standard Base64.
Do not treat Base64 as encryption; sensitive values still need real security controls.

How Base64 conversion works

Base64 turns bytes into a transport-friendly text alphabet. This tool uses UTF-8 text handling, restores missing padding while decoding, and can switch between standard Base64 and Base64URL.

Usage notes

Standard Base64 uses A-Z, a-z, 0-9, +, /, and optional = padding.
Base64URL replaces + and / with - and _ so the value is safer in URLs and filenames.
Base64 is reversible encoding, not encryption, so it should not be used to protect secrets.