Update:
Some users in this thread give me very valid solutions i list them here
1) https://www.steamgifts.com/go/comment/TLJsArj
use https://steamdb.info/calculator/ then click game button (thank to user skye0)

2)
use http://steam.tools/games/ Add user -> Import Games -> Export List.
(thank you to PoeticKatana)

3)
use https://lorenzostanco.com/lab/steam/u/usernameidhere
(thank to user Fluffster https://www.steamgifts.com/go/comment/6h4QAvx)

4)
"You can also add &xml=1 to the normal steam profile games list URL and it'll give you an XML dump of the data instead. Search with your web browser's normal search function. It's not pretty, but it's fast. :)
So, for example, your games list normally:
https://steamcommunity.com/profiles/76561198086212592/games/?tab=all
Your games list in XML format:
https://steamcommunity.com/profiles/76561198086212592/games/?tab=all&xml=1
(thank to user Stlpaul https://www.steamgifts.com/go/comment/K54mDYq)

5)
use right click "view-source:https://steamcommunity.com/id/usernameidhere/games/?tab=all" without " then ctrl+f for find game name
(thank to user MysteriousMrX https://www.steamgifts.com/go/comment/3ys8fVy)

6)
use steam api read https://www.steamgifts.com/go/comment/lMMgV9P (thank to user cals7)

note1:
i change discussion title maybe one day could be helpful for others people
i add useful comments\links to my first post , maybe people like me don't know things can reach info easy.
p.s. Thank you to all people reply me in this thread and help me much,very good replies here useful and positive\creative.

Note2:
My old message\request:
"there is any way to create a steam link\search for check if one user own only one game?
Because go to https://steamcommunity.com/profiles/userid/games/?tab=all
and then write the game name not work for me because it's so much slow for me with profiles own 5k+ games
"

3 months ago*

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In those cases I usually add them on Steam. Then when accepted, I go to the storepage of the game, shows there if they have it on wishlist/own it.

3 months ago
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thank you this good idea too

3 months ago
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You could use a 3rd party site to check their games. Some are much lighter than that painfully slow steam page.
This one has a games section you can click with a search option.
https://steamdb.info/calculator/

3 months ago
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oh i not know steamdb can do also this,thank you i will try

3 months ago
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i try it,is true what you write,if put id user and make it load and then push button games is very fast,thank you.
what a shame that steam\valve so not do same at steam app,very + fast steamdb

3 months ago
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While the browser can take a long time to render a long Steam game list, if you right click and choose View Source during that you get a file that you can easily and quickly search with Ctrl-F.

3 months ago
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thank you for this info i will try,but it not work to me page make i can't right click,and if i do developer tool with 3 dots ... or keyboard shortkut then i not know where to go for see

3 months ago
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Ctrl + U opens the source code of the web page

3 months ago
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In many browsers, if you know the URL, you can just put
view-source:
in front of the URL to get the page.

For instance, yours would be
view-source:https://steamcommunity.com/id/DavideSpagocci/games/?tab=all
(URL formatting on SteamGIfts killed the clickability, so you'd have to copy/paste the whole line vs just click on the above link.)

3 months ago
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3 months ago
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oh very thank you,sorry with you i don't know this,thank you very

3 months ago
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ok i try it,my god it is very fast this too,you true,very fast yes

3 months ago
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You can get this and more from the steam api if the user has his list set to public.

Ownership of single game is as follows and shows you own Cyberpunk as per this line.

http://api.steampowered.com/IPlayerService/GetOwnedGames/v0001/?key= --- my steam api key ---- &steamid= --- steam id of target --- &format=json&include_appinfo=1&appids_filter%5B0%5D= --- app id of game ---

with no spaces or --- marks.

Data returned will be "game count" = 0 if target does not own it. Or 1 with more details if they do.
Its meant to be used in a script for returning results but you can use the URL directly and just look at the results.

The only private thing is your steam api key. Its free but you have to request one from steam.

Screen snips of owning something and not owning something
here.

I have a plugin to make it more readable for testing but the raw data is the same just without any spaces, returns or colors.
I normally return it directly to a script making the call.

3 months ago
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this "my steam api key" take from where?
edit " you have to request one from steam." ah ok i read better now,ok i will try also this thank you much for explain.

3 months ago
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i try this 2 for now:
https://www.steamgifts.com/go/comment/TLJsArj
https://www.steamgifts.com/go/comment/3ys8fVy
and both very very fast thank you,very thank you to all people help me this very useful know,later days i will try apikey method too but for now this 2 already much better thank you very.

3 months ago
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I usually use this site even though it wasn't designed for that. I found that even on my old computer it loaded huge libraries I couldn't even try on my browser.

3 months ago
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thank you this useful too

3 months ago
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Indeed a good site, thank you .

3 months ago
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And really great to pick games for theme events on SG ;)

3 months ago
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This comment was deleted 3 months ago.

3 months ago
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