Base64 Encoder and Decoder

const encoded = btoa(unescape(encodeURIComponent(text)));
// URL-safe
const urlSafe = encoded.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/g, '');

// প্রিপ্রসেসিং: -_ কে +/ দিয়ে প্রতিস্থাপন করুন
let b64 = input.replace(/-/g, '+').replace(/_/g, '/');
if (b64.length % 4 !== 0) b64 = b64.padEnd(b64.length + (4 - (b64.length % 4)), '=');
const text = decodeURIComponent(escape(atob(b64)));

$encoded = base64_encode($text);
// URL-safe
$urlSafe = rtrim(strtr($encoded, '+/', '-_'), '=');

$b64 = strtr($input, '-_', '+/');
// স্বয়ংক্রিয়ভাবে '=' পূরণ করুন
if (strlen($b64) % 4 !== 0) $b64 .= str_repeat('=', 4 - (strlen($b64) % 4));
$text = base64_decode($b64);

import base64

encoded = base64.b64encode(text.encode('utf-8')).decode('ascii')
# URL-safe এনকোডিং (প্যাডিং সরানো)
url_safe = encoded.replace('+','-').replace('/','_').rstrip('=')

import base64

def b64_decode(s: str) -> str:
    s = s.replace('-','+').replace('_','/')
    s += '=' * (-len(s) % 4)  # স্বয়ংক্রিয়ভাবে '=' পূরণ করুন
    return base64.b64decode(s).decode('utf-8')

import (
    "encoding/base64"
)

enc := base64.StdEncoding.EncodeToString([]byte(text))
// URL-safe এনকোডিং (প্যাডিং ছাড়া)
urlEnc := base64.RawURLEncoding.EncodeToString([]byte(text))

import (
    "encoding/base64"
)

decBytes, err := base64.StdEncoding.DecodeString(enc)
// URL-safe ডিকোডিং (প্যাডিং ছাড়া)
decURL, err2 := base64.RawURLEncoding.DecodeString(urlEnc)

use base64::{engine::general_purpose, Engine as _};

let enc = general_purpose::STANDARD.encode(text.as_bytes());
// URL-safe এনকোডিং (প্যাডিং ছাড়া)
let url_enc = general_purpose::URL_SAFE_NO_PAD.encode(text.as_bytes());

use base64::{engine::general_purpose, Engine as _};

let dec_bytes = general_purpose::STANDARD.decode(&enc).unwrap();
let dec = String::from_utf8(dec_bytes).unwrap();

let url_dec = String::from_utf8(
    general_purpose::URL_SAFE_NO_PAD.decode(&url_enc).unwrap()
).unwrap();

import java.nio.charset.StandardCharsets;
import java.util.Base64;

String enc = Base64.getEncoder().encodeToString(text.getBytes(StandardCharsets.UTF_8));
// URL-safe এনকোডিং (প্যাডিং ছাড়া)
String urlEnc = Base64.getUrlEncoder().withoutPadding().encodeToString(text.getBytes(StandardCharsets.UTF_8));

import java.nio.charset.StandardCharsets;
import java.util.Base64;

String dec = new String(Base64.getDecoder().decode(enc), StandardCharsets.UTF_8);
String urlDec = new String(Base64.getUrlDecoder().decode(urlEnc), StandardCharsets.UTF_8);