No confío en esa página porque no explica claramente quién la escribe.

Because confiar usually takes the preposition en when it means to trust someone or something.

• Confiar en alguien/algo = to trust someone/something
• No confío en esa página = I don’t trust that website/page

Without en, confiar often sounds incomplete or can mean something slightly different depending on context.

Examples:

• Confío en ti. = I trust you.
• Confío en este médico. = I trust this doctor.

Esa means that and agrees with página, which is feminine singular.

Spanish has three common demonstratives:

• esta = this
• esa = that
• aquella = that over there / that one further away

So:

• esta página = this page
• esa página = that page
• aquella página = that page over there / that page farther away

In modern Spanish, esa is a very normal choice for that.

Página can mean page, and in many contexts it can also refer to a web page or even a website, depending on how people are speaking.

In everyday Spanish, especially in casual use, people often say:

• una página = a page / a website
• una página web = a web page / website
• un sitio web = a website

So esa página here is very natural and likely means that website or that webpage.

Because Spanish often omits subject pronouns when the verb ending already shows who the subject is.

• confío clearly means I trust
• so yo is not necessary

You could say:

• Yo no confío en esa página...

But it is usually omitted unless you want emphasis, contrast, or clarity.

Because porque (one word, no accent) means because.

Compare:

• porque = because
• por qué = why
• el porqué = the reason
• por que = rarer combination in other structures

In your sentence:

• No confío en esa página porque...
• I don’t trust that page because...

So porque is exactly the right form.

It has an accent because quién is an interrogative/exclamatory word, and in Spanish these words keep an accent even in indirect questions.

Here it is not a direct question like:

• ¿Quién la escribe? = Who writes it?

But an indirect question:

• No explica claramente quién la escribe. = It doesn’t explain clearly who writes it.

Common accented interrogative words in indirect questions:

• qué
• quién
• cuál
• cuándo
• dónde
• cómo

Because la stands for esa página.

• la escribe = writes it

Spanish often uses object pronouns to avoid repeating the noun.

So instead of saying:

• No explica claramente quién escribe esa página

it says:

• No explica claramente quién la escribe

This is very natural and efficient.

Also, quién escribe la is incomplete, because la needs to go before the conjugated verb:

• correct: quién la escribe
• not correct: quién escribe la

La refers to esa página.

Since página is feminine singular, the direct object pronoun is la.

• página → la

So:

• quién la escribe literally = who writes it

Even though in English we usually say who writes it for a website only in certain contexts, in Spanish escribir una página can refer to creating or authoring its content.

Because in Spanish, object pronouns usually go before a conjugated verb.

So:

• la escribe = writes it
• lo veo = I see it / him
• te conozco = I know you

This is one of the basic word-order patterns in Spanish.

The pronoun can attach to a verb only in certain cases, such as:

• infinitives: escribirla
• gerunds: escribiéndola
• affirmative commands: escríbela

But with a normal conjugated verb like escribe, it goes before:

• quién la escribe

Quién is singular because the sentence is asking about who writes it, as a single unknown author or source.

But Spanish can also use quiénes if several people are expected:

• No explica claramente quiénes la escriben.
• It doesn’t explain clearly who writes it / who the writers are.

In your sentence, singular quién is the more neutral and common choice.

Both word orders are possible in Spanish, but explica claramente is the most natural and neutral.

• explica claramente = explains clearly

Adverbs like claramente often go after the verb in ordinary statements.

Compare:

• No explica claramente quién la escribe. = neutral and natural
• No claramente explica... = unnatural here
• No explica quién la escribe claramente. = could sound like clearly is modifying the second part instead

So placing claramente after explica makes the meaning very clear.

Because the sentence is expressing a current opinion about a general situation.

• No confío = I don’t trust
• no explica = it doesn’t explain
• la escribe = writes it

The present tense is often used in Spanish, just like in English, for:

• general truths
• habits
• current opinions
• ongoing situations

This sentence means that right now, as a general judgment, the speaker does not trust that page because it does not clearly say who writes it.

Yes. In Spain, fiarse de is very common and natural for to trust in everyday speech.

So you could say:

• No me fío de esa página porque no explica claramente quién la escribe.

This is very natural in Spain.

Difference:

• No confío en esa página = slightly more neutral or formal
• No me fío de esa página = very common, conversational, especially in Spain

Yes. In Spanish, escribir is often used for producing written content, including online content.

So quién la escribe means something like:

• who writes it
• who creates the content
• who is behind the text on it

For a website, Spanish may use escribir in a broader way than English sometimes does. In English, we might more naturally say:

• who wrote it
• who runs it
• who is behind it
• who created the content

But in Spanish, escribir works well here.

Not exactly. It is better understood as an indirect question.

The sentence contains:

• main clause: No confío en esa página
• reason clause: porque no explica claramente quién la escribe

Inside that second part, quién la escribe means who writes it, which is an indirect question, not a relative clause.

You can see this because it corresponds to the direct question:

• ¿Quién la escribe?

That is why quién has an accent mark.

Your sentence is already natural. But here are a few very natural alternatives:

• No confío en esa página porque no explica claramente quién la escribe.
• No me fío de esa página porque no queda claro quién la escribe.
• No me fío de esa web porque no dice claramente quién está detrás.

Nuance:

• esa página = that page / website
• esa web = that website
• quién está detrás = who is behind it

All of these sound natural in Spain, depending on style and register.