For den saks skyld kan vi velge utvidelsen.

For den saks skyld is an idiomatic expression. In English, it often corresponds to for that matter, as far as that is concerned, or sometimes for that sake depending on context.

In this sentence, it has a slightly loose, conversational feel: it adds something like if we’re talking about that anyway, or for that matter.

So the phrase is not meant to be understood too literally word by word in normal use. It functions as a set expression.

It is mostly best learned as a fixed expression.

That said, the parts are still recognizable:

• for = for
• den = that/the
• saks = genitive form of sak (matter, case, issue)
• skyld = sake, reason

Historically and grammatically, it is something like for that matter’s sake, but in modern usage, learners should mainly treat it as an idiom.

Because saks is the genitive form of sak.

• en sak = a matter / a case / an issue
• sakens can also occur in some expressions, but here the fixed phrase is for den saks skyld

In this expression, the -s works much like the English possessive ’s in older or more literal phrasing. Even though modern Norwegian does not use the genitive very widely in everyday speech, it survives in set phrases like this one.

This is because Norwegian follows the V2 rule in main clauses. That means the finite verb usually comes in the second position.

Here, the sentence begins with for den saks skyld, which counts as the first element. Because that element comes first, the verb must come next:

• For den saks skyld
  • kan
    • vi
      • velge utvidelsen

If you started with the subject instead, you would get:

• Vi kan velge utvidelsen.

Both are grammatical, but the emphasis changes. Starting with for den saks skyld gives that phrase more prominence.

Yes, that is possible.

Compare:

• For den saks skyld kan vi velge utvidelsen.
• Vi kan for den saks skyld velge utvidelsen.

Both are natural, but they sound slightly different in focus.

• In the first sentence, for den saks skyld is fronted, so it gets more emphasis.
• In the second, the basic statement vi kan velge utvidelsen comes first, and the idiomatic phrase is inserted later.

This is a common kind of variation in Norwegian.

Here kan most naturally means can in the sense of it is possible / we are able / we are free to.

Depending on context, it may also feel a bit like a suggestion:

• we can choose the extension
• we could choose the extension

So kan does not always have just one neat English equivalent. It often expresses possibility, permission, or a practical option.

Because utvidelsen is the definite singular form:

• en utvidelse = an extension
• utvidelsen = the extension

In Norwegian, definiteness is usually shown by adding an ending to the noun:

• -en for many common gender nouns
• -et for many neuter nouns
• -a or -en for feminine nouns depending on style

So utvidelsen already includes the meaning of the extension.

Grammatically, utvidelsen is a noun in the definite singular.

The base noun is utvidelse, which can mean things like:

• extension
• expansion
• extension module / add-on / plugin

The exact English translation depends on context. In technical contexts, it may mean something like the extension in software or browsers. In other contexts, it could mean an expansion or enlargement.

Velge is the ordinary verb to choose.

Its basic forms are:

• å velge = to choose
• velger = choose / chooses
• valgte = chose
• har valgt = have/has chosen

In your sentence, velge is in the infinitive because it follows the modal verb kan:

• kan velge = can choose

That pattern is very common in Norwegian:

• vi kan gå = we can go
• hun vil spise = she wants to eat
• de må vente = they must wait

Yes. It often gives the sentence a slightly conversational or pragmatic tone.

It can suggest something like:

• if that’s relevant
• for that matter
• as far as that goes
• if we want to take it that far

So it is often used not just for literal meaning, but to shape the speaker’s attitude. It can make the sentence sound more casual, flexible, or a bit argumentative, depending on context.

Normally, no comma is required just because that phrase comes first.

So the standard form is:

• For den saks skyld kan vi velge utvidelsen.

In some writing, a comma might appear for emphasis or rhythm, but that is not the default. In ordinary Norwegian punctuation, you would usually leave it out.