Every tool is free. No plans, no card, no account.
One click finds what's slowing or exposing your connection and walks you through fixing it. Everything runs in your browser.
Free
Test & Optimize
- Every check in one click: device, speed and lag under load, DNS, privacy leaks, lag spikes, game servers, NAT/IPv6/HTTP3, website networks, streaming, outages and open ports
- A plan ranked by impact, telling you how each step lowers lag or closes a gap
- Exact values: Smart Queue limits for your line, the fastest DNS we measured, your best game region
- Guided fixes for Wi-Fi, this device, background downloads, NAT and browser IP leaks
- We ask before anything that changes your router, device or DNS
- Re-test with before and after, to prove each fix worked
Also free
Every other tool and guide
- Standalone tools: spike finder, Wi-Fi room check, port checker, game server ping, streaming check and more
- Fix guides for every major router brand and the most played games
- Business checks: email (SPF, DKIM, DMARC), website headers, look-alike domains and open ports, with the exact records to publish
- Providers compared: evening slowdowns by provider and city, from results people chose to share
Ads and Amazon affiliate links on our guides. We earn a small commission on gear you buy through them, at no cost to you.
We don't sell data, and ads load only after you accept cookies.
No IP addresses and no test results stored.
Who The Net Fix is for
Anyone whose connection feels worse than the speed test says: gamers with lag spikes, families whose calls freeze when someone starts a download, people working from home, and small businesses checking their email and website security. You don't need to know networking. Each check explains what it found in plain words and gives you the exact setting to change.
The Net Fix lowers lag by finding and fixing bottlenecks; it can't make your plan faster than what your provider sells.
Common questions
Is The Net Fix really free?
Yes. Every tool, check and guide is free to use, with no plan to pick, no card and no account. The older paid plans have closed, so there is nothing to upgrade to and nothing held back for paying users. Test & Optimize is the same full check for everyone.
How does The Net Fix make money?
From ads on some pages and from Amazon affiliate links on the guides. If you buy gear through one of those links we earn a small commission, at no extra cost to you. Ads load only after you accept cookies, and we never sell data. The privacy policy has the details.
Do I need to create an account to run the tests?
No. The tests run in your browser and your last few results are kept in your browser's own storage, not on our servers. Signing in exists only for our team's admin console, so there is nothing for visitors to sign up for.
Will a free tool really lower my lag?
It finds where the delay comes from and tells you the exact change to make, such as a Smart Queue limit or a better DNS resolver, then re-tests to prove it. It can't raise the speed your provider sells you; it removes the bottlenecks that add lag on top of it.