Hon vill skanna blanketten och sedan skicka in den så fort hon har fyllt i allt.

Because vilja is a modal verb in Swedish. Modal verbs normally take the infinitive without att.

So you say:

• Hon vill skanna blanketten.
• Jag kan komma.
• Vi måste gå.

Not:

• Hon vill att skanna ... ❌

So vill skanna works like English wants to scan, even though Swedish does not use a separate word here corresponding to to.

Swedish normally requires an explicit subject in each clause. In this sentence, there is a new clause after så fort:

• ... så fort hon har fyllt i allt

So Swedish repeats hon instead of leaving it understood.

Compare:

• Hon vill skanna blanketten.
• Hon vill skicka in den.
• ... så fort hon har fyllt i allt.

English can sometimes be a bit looser with understood subjects, but Swedish usually states them clearly.

Blankett means form.
Blanketten means the form.

The ending -en is the usual definite ending for many common-gender nouns in Swedish.

So:

• en blankett = a form
• blanketten = the form

Unlike English, Swedish often puts the at the end of the noun instead of using a separate word.

Den refers back to blanketten.

Since blankett is a common-gender noun (en blankett), the pronoun used for it is den.

So:

• blanketten = the form
• den = it / the form

In the sentence:

• skanna blanketten och sedan skicka in den

the second part avoids repeating blanketten, so Swedish uses den instead.

Skicka in is a verb plus particle, often called a particle verb. Here it means submit or send in.

So:

• skicka = send
• skicka in = send in / submit

This is similar to English phrasal verbs like send in, fill out, or hand in.

In this sentence:

• skicka in den = submit it

The meaning of the whole expression is not always exactly the same as the base verb alone, so it is best to learn skicka in as a unit.

Fyllt i comes from the verb fylla i, which means fill in.

Its main forms are:

• infinitive: fylla i
• present: fyller i
• supine: fyllt i

After har, Swedish uses the supine form:

• har fyllt i = has filled in

So in the sentence:

• hon har fyllt i allt

it means she has filled in everything.

Because the sentence is talking about something that must be completed before she submits the form.

• så fort hon har fyllt i allt = as soon as she has filled in everything

The perfect form har fyllt i emphasizes completion. It shows that the filling in must be finished first.

In everyday Swedish, you may sometimes hear present tense in similar time clauses, but here har fyllt i is very natural because it clearly marks the action as completed before the next step.

Så fort means as soon as in this sentence.

It can also literally mean so fast, depending on context, but here it introduces a time clause:

• så fort hon har fyllt i allt = as soon as she has filled in everything

So you should understand it as a conjunction meaning as soon as, not as a description of speed.

Because after a subordinating expression like så fort, Swedish uses subordinate clause word order.

That means the subject usually comes before the finite verb:

• så fort hon har fyllt i allt

Structure:

• så fort = conjunction
• hon = subject
• har = finite verb
• fyllt i = non-finite verb part
• allt = object

This is different from main clauses, where Swedish normally has verb-second word order.

For example:

• main clause: Hon har fyllt i allt.
• subordinate clause: ... så fort hon har fyllt i allt.

Here the order happens to look similar to English, which is helpful.

Because both verbs depend on vill.

The structure is:

• Hon vill skanna blanketten
• och sedan skicka in den

The second infinitive skicka in is coordinated with the first one skanna. Swedish does not need to repeat vill.

So the full idea is:

• She wants to scan the form and then submit it

This is very common in Swedish:

• Jag vill äta och sedan gå hem.
• De vill läsa boken och diskutera den.

Sedan means then or after that.

It marks the sequence of actions:

1. skanna blanketten = scan the form
2. sedan skicka in den = then submit it

So it helps show that she wants to do one thing first and the other afterward.

In everyday speech, you will also often see or hear sen, which is a shorter, more informal form of sedan.

Yes, allt literally means everything, but in this context it means everything that needs to be filled in.

So:

• hon har fyllt i allt means
• she has filled in everything
• or more naturally, she has filled in all the required information

Swedish often uses allt this way when the missing details are understood from context.

Skanna is a Swedish verb based on the English word scan, but it has been adapted to Swedish spelling and verb patterns.

The infinitive is:

• skanna

Other forms are:

• skannar = scans
• skannade = scanned
• skannat = scanned

So even though it comes from English, it behaves like a normal Swedish verb.

Yes, depending on context, skicka in can mean send in in a broad sense, including submitting something digitally, by email, or by regular mail.

In this sentence, since she wants to scan the form first, it strongly suggests some kind of electronic submission. But grammatically, skicka in itself does not force only one method.

So the exact method comes from context, not just from the verb.

Yes. It is built from several linked parts:

• Hon vill = She wants
• skanna blanketten = to scan the form
• och sedan skicka in den = and then submit it
• så fort hon har fyllt i allt = as soon as she has filled in everything

So the sentence combines:

• a main clause
• two coordinated infinitives
• a time clause

That makes it a very typical example of natural Swedish sentence-building: clear action sequence, pronoun reference, and a subordinate clause showing when the final action happens.