Seven "can my PC run it?" checkers side by side: which ones detect your rig on their own, which ones ask you to download something, how many games they cover and what they give you back.
Short answer: if you do not want to install anything, there are four browser options: CanIRun.gg, PC Game Check, Will it run? and technical.city. If you want FPS numbers, look at technical.city or PCGameBenchmark.
Data checked on October 1, 2026 on each tool's website. Where it says "site claim", the number is the one each site publishes.
The table
What we could verify for each one. "Not found" means we did not see it on their site, not that it is impossible.
Real user FPS and whether you meet the requirements
Yes, plus affiliate links
English
One by one
What each tool does and what it is good at.
canirun.gg
CanIRun.gg
This is us, so read it with that in mind. It reads your graphics card through WebGL and your cores and RAM through browser APIs, then grades every game in the catalog from S to F against its recommended requirements.
What it does well
Nothing to install, on Mac and Linux too
Desktop, laptop and handheld modes
A Steam Deck page per game, with ProtonDB
What we do not do: we do not estimate FPS, the browser does not reveal your exact CPU model (only the core count) and Chrome reports 8 GB of RAM at most, so you may need to fix it by hand.
The original. It has answered "can I run it" since the mid 2000s, and publishers and hardware makers license its technology. You download a small app, it scans your system and compares each component with the game's minimum and recommended requirements.
What it does well
The largest requirements database on this list
Checks more than the GPU: OS, DirectX, disk space
Shows what share of recent tests passed for each game
Its page says "Works on Windows 7, 8, 8.1, 10 and 11". There is no way to run the test from a phone.
A small open-source project by Maaaxgz. You type your parts, search for the game and the requirements arrive live from the RAWG API. It uses normalized PassMark scores.
What it does well
Open source on GitHub
Treats VRAM as a hard limit and penalizes CPU bottlenecks
Simple interface, no accounts, no ads
RAWG does not have requirements for every game, and the site tells you when they are missing.
You do not want to install anythingCanIRun.gg, PC Game Check, Will it run? or technical.city. All four work in the browser.
You want a grade for the whole catalogCanIRun.gg: it detects your rig once and grades every game from S to F.
You play on Steam Deck, Mac or LinuxCanIRun.gg: it has a Steam Deck page per game and Mac and Linux lists.
You want actual FPS numberstechnical.city (FPS at four resolutions) or PCGameBenchmark (real user FPS).
You want a full Windows system checkCan You Run It: its app checks the OS, DirectX and disk on top of the GPU.
You prefer something simple and openWill it run?: type your parts, VRAM included, and its code is on GitHub.
You need another languagetechnical.city has 17 and can-i-run-it.com has 8.
Frequently asked questions
What is the best alternative to Can You Run It?
It depends on what bugs you. If you do not want to download anything, CanIRun.gg, PC Game Check, Will it run? and technical.city work in the browser. For FPS numbers, technical.city and PCGameBenchmark are the most complete. For a grade across the whole catalog, with Steam Deck, Mac and Linux, CanIRun.gg.
Is there a "Can You Run It" with no download?
Yes. CanIRun.gg reads your GPU, CPU cores and RAM in the browser. PC Game Check detects the GPU in the browser and asks for the rest. Will it run? and technical.city ask you to type or pick your parts. None of the four installs anything.
Why does Can You Run It ask me to download an app?
A browser cannot read every component of a computer. The System Requirements Lab app runs a full system scan, including the operating system and DirectX. Web tools read the GPU through WebGL and the cores and RAM through browser APIs, and let you fill in the rest by hand.
How accurate is detection in the browser?
Good for the GPU: WebGL returns your graphics card model. For the CPU only the core count is available, and Chrome reports 8 GB of RAM at most. That is why CanIRun.gg lets you correct any part from a menu.
Which one works for Steam Deck?
Of the seven, CanIRun.gg is the only one where we found a Steam Deck page per game, with Valve's official status and the ProtonDB rating.
Can I check from my phone?
Yes, but you have to pick your PC parts by hand, because the phone would detect its own hardware. Tools with manual menus work from any device. The Can You Run It app, on the other hand, needs a Windows PC.
Are these tools free?
Yes, all seven are free to use. Most are paid for by ads. CanIRun.gg shows no ads and has some affiliate links.
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