ChekakStore/Công cụ/Base64 EncodeMã hóa📤Base64 EncodeEncode text to Base64Mở trên tools.chekak.storetools.chekak.store/tool/base64-encodeEncode text to Base64Công cụ liên quan📥Base64 DecodeDecode Base64 to text🔗URL EncodePercent-encode URL🔓URL DecodeDecode URL-encoded string🔢Hex EncodeText to hex (UTF-8)🔣Hex DecodeHex to text🧷HTML EscapeEscape HTML special chars