Confira a validade antes da renovação.

Confira is the imperative form of conferir for você in Brazilian Portuguese.

A helpful way to think of it:

• conferir = to check
• você confere = you check
• confira = check

In instructions, warnings, labels, and notices, Portuguese often uses this você-command form. That is why confira appears here instead of the infinitive conferir.

Because standard Brazilian Portuguese usually uses você for you, and the command form for você is confira.

Compare:

• tu command: confere
• você command: confira

Since public instructions in Brazil are usually written in a neutral or standard style aimed at the general reader, confira is much more expected here.

It is neutral to somewhat formal, but very natural.

In Brazilian Portuguese, this kind of wording is common in:

• notices
• labels
• service messages
• official instructions
• advertisements

So it does not sound stiff; it sounds like normal instructional Portuguese. It is more standard than everyday spoken English-style direct phrasing.

The a is the definite article, meaning the.

Portuguese uses definite articles more often than English does. So where English might simply say something like check validity, Portuguese naturally says check the validity:

• a validade = the validity

Even when English would leave out the, Portuguese often keeps the article.

It is related, but in everyday Brazilian Portuguese validade often has a more practical meaning than English validity.

In many real-life contexts, validade means:

• the expiration date
• the period something remains valid
• the usable or legal validity of something

For example, it can be used for:

• food
• medicine
• IDs
• cards
• subscriptions
• licenses
• plans

So although validade is connected to English validity, in many everyday situations it is closer to expiration date or valid-until period.

Because de + a contracts to da in Portuguese.

So:

• de + a renovação → da renovação

This kind of contraction is extremely common and usually required in normal Portuguese.

Other examples:

• de + o → do
• em + a → na
• por + a → pela

So antes da renovação is the normal form.

The article makes the phrase sound more definite and natural here.

• antes da renovação = before the renewal

This suggests a specific renewal event or process that the reader is expected to do.

Without the article, antes de renovação, the phrase sounds less natural in this context. Portuguese often prefers the article when talking about a concrete, expected action like renewing a plan, contract, or membership.

Renovação is the noun form of renovar, meaning renewal.

Here it refers to the act or process of renewing something, such as:

• a subscription
• a membership
• a license
• a service plan
• a card
• a contract

In other contexts, renovação can sometimes mean renewal in a broader sense, but here renewal is the natural interpretation.

Yes. Some common alternatives are:

• Verifique a validade antes da renovação.
• Cheque a validade antes da renovação.

Nuance:

• verifique sounds a bit more formal or technical
• cheque is common in Brazil, especially in everyday language
• confira often suggests checking carefully or confirming

So confira is a very natural choice for an instruction like this.

A rough Brazilian Portuguese pronunciation would be:

kon-FEE-ra a vah-lee-DA-jee AN-tchis da heh-no-va-SOWN

A few pronunciation notes:

• confira: stress on fi
• validade: stress on da
• antes often sounds like AN-tchis in many Brazilian accents
• renovação: stress on the final ção, and ão is nasal

Very roughly in IPA, one common Brazilian pronunciation is:

/kõˈfiɾɐ a valiˈdadʒi ˈɐ̃tʃis dɐ ʁenovaˈsɐ̃w̃/

Regional pronunciation varies, but that is a good general model.

Yes, although the exact context matters.

Because of renovação, the sentence especially fits things that can be renewed, such as:

• memberships
• licenses
• subscriptions
• plans
• registrations
• cards

With food or medicine, validade is extremely common, but renovação would usually not fit. So this sentence most naturally sounds like it is about something that has an expiration or validity period and can also be renewed.