Base64 online encoder/decoder

Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The term Base64 originates from a specific MIME content transfer encoding. Each base64 digit represents exactly 6 bits of data.

Encode
Decode

Base64 URL safe example

Base64 in PHP

Encode URL safe

function urlsafeEncode(string $input) {
    return \str_replace('=', '', \strtr(\base64_encode($input), '+/', '-_'));
}

Decode URL safe

urlsafeDecode(string $input, bool $strict = false) {
    $remainder = \strlen($input) % 4;
    if ($remainder) {
    $padlen = 4 - $remainder;
    $input .= \str_repeat('=', $padlen);
    }
    return \base64_decode(\strtr($input, '-_', '+/'), $strict);
}

Base64 in Python

Encode URL safe

base64.urlsafe_b64encode("Test")

Decode URL safe

base64.urlsafe_b64decode("Test")

Base64 in Go

Encode URL safe

_, err := b64.RawURLEncoding.EncodeToString([]byte(data))

Decode URL safe

_, err := b64.RawURLEncoding.DecodeString(str)

Base64 in C#

Encode URL safe

Base64UrlEncoder.Encode(StringToEncode);

Decode URL safe

Base64UrlEncoder.Decode(encodedStr)

Base64 in Rust

Encode URL safe

base64_url::encode("Hello, world!"))

Decode URL safe

base64_url::decode("SGVsbG8sIHdvcmxkIQ")

Base64 in Javascript

Encode URL safe

Buffer.from(token).toString('base64url')