Jag vill ladda upp bilden på min profil ikväll.

After vill (want to), Swedish usually uses the bare infinitive of the next verb, without att.

So:

• Jag vill ladda upp bilden. = I want to upload the picture.

Not:

• Jag vill att ladda upp ... ✗

You can say:

• Jag vill att jag laddar upp bilden.

but that sounds unnatural in this situation. Jag vill + infinitive is the normal pattern when the same person wants to do the action.

Ladda upp is a particle verb, very common in Swedish. It works like English upload, turn on, pick up, etc.

• ladda = load / charge
• upp = up

Together, ladda upp means upload.

This is not just ladda + a random word; the two parts belong together as one expression.

Examples:

• Jag laddar upp bilden. = I upload / am uploading the picture.
• Kan du ladda upp filen? = Can you upload the file?

So in your sentence, think of ladda upp as one vocabulary item.

Bilden is the definite form of bild.

• bild = picture, image
• en bild = a picture
• bilden = the picture

Swedish often puts the definite ending directly on the noun:

• -en for many common-gender nouns
• -et for many neuter nouns

Here, the sentence refers to a specific picture, so Swedish uses bilden.

Compare:

• Jag vill ladda upp en bild ikväll. = I want to upload a picture tonight.
• Jag vill ladda upp bilden ikväll. = I want to upload the picture tonight.

Because profil is an en-word in Swedish.

• en profil
• therefore: min profil

For ett-words, you would use mitt instead:

• ett foto → mitt foto

So:

• min = my, used with en-words
• mitt = my, used with ett-words
• mina = my, used with plural nouns

Examples:

• min profil
• mitt konto
• mina bilder

In Swedish, possessives like min, din, hans, hennes, vår, etc. usually already make the noun definite in meaning.

So Swedish says:

• min profil = my profile

not:

• den min profil ✗

This is different from nouns with adjectives, where Swedish may use a special double-definite structure, but with a simple possessive noun phrase, min profil is enough.

På is the natural preposition here because Swedish usually talks about content being on a profile, page, website, platform, etc.

So:

• på min profil = on my profile

Compare:

• på Facebook
• på min sida = on my page
• på internet

Using i min profil would sound more like inside my profile, which is not how this is normally expressed. Using till min profil would sound more like movement to the profile, but Swedish normally uses på in this kind of internet/social-media context.

In practice, it mainly tells you where the picture will be uploaded: onto/on my profile.

So the natural interpretation is:

• ladda upp bilden på min profil = upload the picture on/to my profile

Structurally, Swedish can sometimes leave this a little flexible, just like English can. But in real use, most people will understand it as the destination/location of the upload.

If you want to be even clearer, you could also hear:

• Jag vill ladda upp bilden till min profil ikväll.

But på min profil is very natural in everyday Swedish.

Swedish often places time expressions like ikväll (tonight) toward the end of the sentence, especially in neutral word order.

So this is very natural:

• Jag vill ladda upp bilden på min profil ikväll.

But Swedish word order is flexible, and you can move ikväll for emphasis:

• Ikväll vill jag ladda upp bilden på min profil.

That version emphasizes tonight.

When a sentence starts with something other than the subject, Swedish uses verb-second word order, so:

• Ikväll vill jag ... not
• Ikväll jag vill ... ✗

Yes. Both ikväll and i kväll are used.

• ikväll
• i kväll

They mean the same thing: tonight.

Modern Swedish often writes these time expressions as one word, but both spellings are acceptable depending on style and preference. The same applies to words like:

• idag / i dag = today
• imorgon / i morgon = tomorrow

In careful speech, jag is often pronounced something like yahg or yag.

But in everyday spoken Swedish, it is very often reduced:

• ja
• sometimes almost just ya

So although it is spelled jag, you will often hear something closer to:

• Ja vill ladda upp bilden ...

This is completely normal in speech.

Yes, often you can.

• bild = picture / image
• foto = photo

If it is specifically a photograph, foto may be more precise:

• Jag vill ladda upp fotot på min profil ikväll.

If it could be any kind of image, bild is broader.

So bilden is a very natural choice, especially online, where bild can mean a photo, image, or picture more generally.

Both can be used, but they are not always exactly the same.

• ladda upp strongly suggests uploading a file
• lägga upp can mean post or put up, especially on social media

So:

• Jag vill ladda upp bilden ... = I want to upload the image
• Jag vill lägga upp bilden ... = I want to post the image

If you are thinking technically about uploading a file, ladda upp fits very well. If you are thinking socially about posting something on your profile, lägga upp is also very common.

Yes. In everyday speech, Swedes often simplify things if the context is clear.

For example:

• Jag vill ladda upp bilden ikväll.
• Jag ska ladda upp bilden ikväll.
• Jag tänkte ladda upp bilden ikväll.

These all sound natural, but they mean slightly different things:

• vill = want to
• ska = will / am going to
• tänkte = was thinking of / intended to

So the original sentence is perfectly natural, but there are several common alternatives depending on what nuance you want.