Mit der Suchmaschine finde ich den Download schneller, wenn ich den genauen Dateinamen kenne.

In a German main clause, the finite verb normally comes in second position. The first position does not have to be the subject; it can also be a time phrase, place phrase, or prepositional phrase.

So both of these are possible:

• Ich finde den Download schneller ...
• Mit der Suchmaschine finde ich den Download schneller ...

When Mit der Suchmaschine takes the first position, the verb finde must still stay second, so ich comes after it. This is a very common German word-order pattern.

Because the preposition mit always takes the dative case.

• nominative: die Suchmaschine
• dative: der Suchmaschine

So:

• mit der Suchmaschine = with the search engine

This is just a rule you need to learn with the preposition mit.

Download is a masculine noun in German: der Download.

Here it is the direct object of finden, so it has to be in the accusative case:

• nominative: der Download
• accusative: den Download

So den Download finde ich means I find the download.

Schneller is the comparative form of schnell.

• schnell = fast / quickly
• schneller = faster / more quickly

In this sentence, it functions adverbially, describing how I find the download. So it means something like:

• I find the download faster
• I find the download more quickly

Because it is being used like an adverb here, it does not take an adjective ending.

Because wenn ich den genauen Dateinamen kenne is a subordinate clause introduced by wenn.

In German subordinate clauses, the conjugated verb usually goes to the end:

• ..., wenn ich den genauen Dateinamen kenne.

This is one of the most important word-order rules in German.

Here, wenn means if.

The sentence gives a condition:

• I find the download faster if I know the exact file name.

In other contexts, wenn can also mean when or whenever, especially for repeated situations. But in this sentence, the most natural English meaning is if.

This is a very common learner question.

A basic rule is:

• kennen is often used with nouns
• wissen is often used with facts, clauses, or question words

Here the object is a noun phrase:

• den genauen Dateinamen

So kennen is the expected choice:

• Ich kenne den Dateinamen.

Compare:

• Ich weiß, wie die Datei heißt.
• Ich kenne den Dateinamen.

Both are about knowing something, but they are structured differently.

Because genauen is an adjective describing a masculine accusative singular noun after the definite article den.

The noun phrase is:

• den = masculine accusative article
• genauen = adjective ending for that pattern
• Dateinamen = noun

So the full phrase is:

• den genauen Dateinamen

This is a standard adjective ending pattern in German.

No, it is singular, not plural.

The base form is:

• der Dateiname = the file name

This noun follows the same pattern as der Name, which changes in some cases:

• nominative: der Dateiname
• accusative: den Dateinamen
• dative: dem Dateinamen

So the -n here is part of the noun’s case form, not a plural ending.

Because finden and suchen are not the same:

• suchen = to search for / look for
• finden = to find / locate successfully

This sentence is about the result: the speaker is able to locate the download more quickly.

So:

• Ich suche den Download. = I am looking for the download.
• Ich finde den Download. = I find the download.

Yes. That is very natural German:

• Wenn ich den genauen Dateinamen kenne, finde ich den Download mit der Suchmaschine schneller.

When a subordinate clause comes first, the main clause still follows the usual rule that the finite verb comes first within that clause part, so you get:

• ..., finde ich ...

You do not say ..., ich finde ... in that structure.

Yes. German, like English, can use a comparative without saying the full comparison explicitly.

So schneller implies something like:

• faster than otherwise
• faster than without the search engine
• faster than if I did not know the exact file name

The sentence leaves that comparison understood from context. That is completely normal.

Yes. Download is a common borrowed word in German, especially in technical or internet-related contexts.

It is usually treated as masculine:

• der Download
• den Download

In everyday German, especially in computer contexts, this is completely normal.