On your deviceEvery check runs locally. Works offline.
No accountNo sign up, no tracking, no profile.
Warns, never blocksYou stay in control of every page.
Open sourceMIT licensed. Read the code.
How it protects you
Clear warnings, in words anyone understands.
Every check runs on your device. When something looks off, Fish Catcher tells you what and why, so you learn to spot it yourself.
Plain language, not scary jargon
Instead of a red screen, you get a sentence or two you can act on. The exact reasons behind every warning, spelled out.
Domain looks like a misspelling of paypal.com
Uses a high abuse domain ending (.tk)
Asks for a password on a site that is not known
A risk color you read at a glance
The toolbar icon turns one of four colors. You always decide what to do next.
GreenNo suspicious signs.
YellowA little unusual. Double check.
OrangeSeveral indicators. Be careful.
RedStrong signs of a fake. Do not log in.
Checks QR codes
Right click any QR image to read the link inside before you trust it. Fully on your device.
Watches links and downloads
Flags a link whose text hides a different destination, and a download disguised as a safe file.
Runs offline, on your device
The lists it checks against ship inside the extension. No connection needed, nothing sent out.
Catches scam packs
Flags pages that ask for a crypto wallet recovery phrase or private key, and fake tech-support pages that tell you to call a number.
Family mode
Bigger text and a clear alert on dangerous sites, with an optional one-tap email to a helper. Nothing sends until you press send.
Report a site in one tap
One button opens a pre-filled report. A maintainer reviews it before anything reaches the threat list, so the lists stay clean.
Three steps, and none of them are yours.
Fish Catcher works quietly in the background. You only hear from it when something is worth a second look.
01 / Check
It reads the page
Fish Catcher looks at the address and content of the site you are on, entirely on your device.
02 / Warn
It sets a risk color
Lookalike domains, fake login pages, confusing links and known bad sites each raise the level.
03 / Learn
It explains why
Every warning is written plainly, so the next scam is one you recognise on your own.
Your privacy
It works for you, not on you.
Fish Catcher does its checks locally, using lists that ship inside the extension. You can verify that by reading the code.
No account, no tracking
Nothing from the pages you visit is sent anywhere. There is no sign up and no profile.
Online checks are opt in
Three optional features can look something up online. All stay off until you turn them on, and each says exactly what it sends.
Open and verifiable
The whole thing is MIT licensed. The privacy promise is one you can check yourself.
Read the full privacy policyFree to install, free forever.
One click from your browser's store. It protects you right away, and short, plain lessons help you learn to spot scams yourself.