Sprawdzam zawartość.

Sprawdzam is the 1st person singular present tense form of sprawdzać.

So it means:

• I check
• I am checking

Polish present-tense forms often cover both the simple present and the present continuous, so context tells you which English translation fits better.

Because Polish usually drops subject pronouns when they are clear from the verb form.

The ending -am in sprawdzam already tells you the subject is I.

So:

• Sprawdzam zawartość. = I’m checking the contents.
• Ja sprawdzam zawartość. = I’m checking the contents. but with extra emphasis on I

You would use ja only if you want contrast or emphasis.

This is about aspect, which is very important in Polish.

• sprawdzać → imperfective
• sprawdzić → perfective

So:

• Sprawdzam zawartość. = I’m checking / I check the contents
  focuses on the process or a repeated action
• Sprawdzę zawartość. = I will check the contents
  focuses on a completed future action

Polish perfective verbs do not normally have a true present-tense meaning. Their present forms usually refer to the future.

It is in the accusative case, because it is the direct object of the verb sprawdzam.

You are checking what?
→ zawartość

For this noun, the nominative and accusative singular look the same:

• nominative: zawartość
• accusative: zawartość

So even though the case changes functionally, the form does not change visibly here.

Grammatically, zawartość is singular.

That can feel strange to an English speaker because English often says the contents in the plural. Polish commonly uses the singular noun zawartość for that idea.

So depending on context, zawartość may correspond to:

• content
• contents
• what’s inside

For example, sprawdzam zawartość pudełka means I’m checking the contents of the box.

Zawartość usually means the contents or what is inside something.

It can be used for:

• a box, bag, package, drawer
• a file or folder
• a bottle, container, or substance
• sometimes the overall content of something

A useful nuance:

• zawartość often refers to what something contains
• treść often refers to the content of a text, message, or speech

So in many situations, zawartość sounds more like contents, while treść sounds more like text/content meaning.

A rough English-friendly guide is:

SPRAV-dzam za-VAR-toshch

A few helpful points:

• w in Polish sounds like English v
• rz here sounds like zh (as in measure)
• ść is a soft sound, roughly like shch, but lighter and more compact
• Polish stress usually falls on the second-to-last syllable

So the stress is roughly:

• SPRAW-dzam
• za-WAR-tość

Yes. Polish word order is more flexible than English word order.

Sprawdzam zawartość is a neutral, natural way to say it.

But you could also say:

• Zawartość sprawdzam.

That version puts more focus on zawartość. It might sound like:

• It’s the contents that I’m checking
• The contents, I’m checking them

So the original sentence is the most neutral/default version.

Because Polish has no articles.

There is no direct equivalent of a / an / the in normal Polish grammar. So zawartość by itself can mean:

• the contents
• contents
• sometimes the content

The exact meaning depends on context.

Yes.

Polish present tense often covers both meanings:

• habitual/general: I check the contents
• right now/in progress: I am checking the contents

Context tells you which one is intended.

For example:

• At work, every package is opened and inspected: Sprawdzam zawartość = I check the contents
• Right now, while opening a package: Sprawdzam zawartość = I’m checking the contents

Yes, and that is a very natural expansion of the sentence.

It means I’m checking the contents of the box.

Here:

• zawartość = contents
• pudełka = of the box (genitive case after a noun)

So the original sentence may feel slightly unfinished by itself unless the context already makes clear the contents of what you are checking.