FF404
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FF404 – Real-Time Alerts for Paid Traffic on Broken Pages

Never lose another click. FF404 monitors your site and instantly alerts you when paid, email, or search traffic lands on a 404. Fix issues before they waste budget, cost conversions, or frustrate customers.

In the past 25 days, our tracking tag across 23 sites detected 2,965 unique visitors generating 3,594 pageviews on missing pages. 9.8% of these (352) were high-value visits — 74 from paid campaigns, 115 from email/UTM links, and 216 from organic search. We sent 605 alerts to 8 users so they could fix issues fast. When marketers lose money to broken pages, we make sure they know instantly—so they can stop the leak and recover the traffic.

What Marketers Might Say About FF404

  • Diego F SEO Consultant Marketing Agency

    When you're juggling multiple sites, even one broken redirect can eat half your day. FF404 saves me hours by flagging exactly where traffic is falling into a 404. I don't have to crawl sites every week manually anymore. Clients think I've upgraded my toolkit, really I've just automated the boring pain.

  • Tomasz K Project Manager Web Development Agency

    Every new site launch, I'm terrified we missed a redirect. FF404 has become part of our QA checklist. Instead of waiting for client complaints, I get a neat list of what's broken and who's hitting it. Clients think we've leveled up our professionalism — we just added the pixel.

  • Julia M Marketing Operations Consumer Subscription

    We spend six figures a month on ads. Different owners for each channel, plus a freelance agency doing our emails. Nobody knows the full picture. FF404 is the referee. It tells us where customers are getting lost, no matter who created the link. It probably saves us more in politics than in dollars — but also thousands of dollars.

  • Emily W Marketing Coordinator Apparel Retail

    When we moved from Magento to Shopify, we thought we were done after the redirect plan. Wrong. FF404 found old influencer links, email campaigns, even QR codes pointing to nowhere. Saved us from a ton of awkward customer support tickets.

  • Priya N SEO Lead Travel

    I used to find broken links weeks later when rankings were already tanking. Now I get an alert within minutes. I fixed one nasty redirect loop the tool spotted and we actually recovered the position the same week. That's unheard of. My agency clients think I'm a wizard but really it's just this little script doing the work.

  • Kevin Z Founder Food Delivery

    I don't check Google Analytics every day. Honestly, I forget. FF404 just slaps me with an alert when money is being wasted. We had a broken promo code link in a Facebook ad, I fixed it in 3 minutes instead of 3 weeks. That's the difference between broke and alive for a startup.

  • Ahmed H Marketing Director Non-profit Fundraising

    We don't have money to waste. Every donor click is sacred. When I saw how many donation links were leading to 404s from old campaigns, I almost cried. This tool literally protects our mission by making sure nobody hits a dead end when they want to give us money.

  • Daniel L Paid Media Specialist SaaS Startup

    We run like 50+ ads across Google and LinkedIn at any given time. One bad redirect and I might as well throw $500 out the window. FF404 is the only reason I sleep at night. It's basically my insurance policy against bad landing pages. Pretty sure it's paid for itself 20x over.

  • Mike O Growth Lead Fintech

    Growth marketing is basically plugging holes in a leaky funnel. FF404 is like duct tape that actually works. The best part is the Slack alerts — I don't have to check some dashboard, it just tells me “hey, you're lighting money on fire here.” One click and problem solved.

  • Karen L Ecommerce Director Home Goods Retail

    Our Magento → Shopify migration left a graveyard of broken links. We thought we redirected everything… turns out we didn't. FF404 showed us hundreds of lost clicks in the first week. Some were paid campaigns still running from before. Fixed them fast and probably saved five figures in wasted ad spend.

  • Jake W Content Marketing Manager B2B Software

    We publish so much content that stuff inevitably breaks. Whitepapers get moved, blog URLs change, sales team sends old links in newsletters. I can't babysit all that. FF404 just tells me exactly what's broken and who's hitting it. Fixed a 404 last month that 200 prospects were bouncing off. That's like free pipeline back from the dead.

  • Holly D Account Manager Digital Agency

    We used to rely on clients emailing us “hey, this page is broken” — which is the worst possible way to hear about it. Now FF404 catches issues across all client sites before they even know. I can send a fix note with a screenshot and look proactive instead of reactive. It's like having an intern who never sleeps.

  • Sarah K Email Marketing Manager Retail / Fashion E-commerce

    Before this, I'd spend half my Monday morning chasing down broken links from our campaigns. Nothing makes you look dumber than sending 200,000 people to a 404 page. Now FF404 pings me the second it happens. I fix it, send a quick correction, and my boss thinks I've got everything under control. Saved us thousands in wasted email traffic already.

  • Maya J Marketing Manager Consumer Electronics

    We've got four different people running ads on Google, Facebook, TikTok, plus an outside agency doing email. It's chaos. FF404 is the one place where all the broken links show up. No finger-pointing, no drama, just “hey, this link is dead, fix it.” Honestly it keeps the peace on our team.

  • Rachel G Account Manager Digital Agency

    My nightmare is a client noticing broken ads before I do. FF404 makes sure that never happens. I get the alert, fix the ad, and look like a hero. I even bragged about it in a client meeting and now they think I have some magic sixth sense for broken links.

  • Ben C Engineer Independent / Side Projects

    I spin up landing pages for fun — affiliate sites, SaaS experiments, random blogs. Stuff breaks all the time. Normally I only find out when someone tweets “your site is down lol.” Now I get a quick email or Slack ping. It feels like cheating, but it's just smarter monitoring.

  • Alex M Founder SaaS Startup

    I wear every hat — marketing, product, customer support. I don't have time to babysit analytics dashboards. FF404 just drops me a note when traffic is going to a dead page. I fix it, move on. It's like having a grown-up marketing ops team for $0.10 a day.

  • Tom R Marketing Operations Enterprise SaaS

    We run campaigns across 15+ countries and hundreds of landing pages. It's chaos. FF404 is like having a watchdog on all of them. Last quarter it flagged a broken link in a nurture sequence that was costing us ~200 leads a week. Fixed in 10 minutes. Honestly, it's embarrassing we didn't have this sooner.

  • Elena P Website Operations Manager Healthcare

    Our site is basically a Frankenstein — old CMS, new microsites, patient portals. Things break daily. I used to rely on angry emails from colleagues to even know something was wrong. Now the system catches it before anyone complains. Honestly, it saves me embarrassment more than anything.

  • Laura C SEO Specialist Beauty E-commerce

    I once discovered a Black Friday ad pointing to a deleted product page… two weeks after the sale. Painful. With FF404, I caught the same kind of issue within an hour this year. We recovered thousands in sales. Honestly, it's the cheapest insurance policy you'll ever buy if you run paid traffic.

Frequently asked questions

What is FF404?

FF404 is a real-time monitoring tool that alerts you when your paid, email, or search traffic lands on broken pages (404s). Instead of wasting ad spend and losing customers, you’ll know immediately and can fix the problem before it costs you.

Who should use FF404?

FF404 is built for marketers, growth teams, and ops leaders running paid campaigns, email marketing, or SEO. If you’re investing in traffic, FF404 protects that investment by catching every lost click.

How does FF404 work?

Install a lightweight tracking tag on your site. FF404 detects when traffic from ads, campaigns, or organic search hits a 404. It then sends real-time alerts via Slack, email, or dashboard so you can fix issues instantly.

What makes FF404 different from other analytics tools?

Traditional analytics show you traffic trends after the fact. FF404 focuses on real-time alerts for broken journeys, so you can stop the leak before it drains budget or conversions. It’s proactive, not reactive.

How quickly will I get alerts?

Immediately. As soon as FF404 detects a broken page visit from valuable traffic, you’ll get a notification—often within seconds.

Does FF404 work with any marketing platform?

Yes. FF404 tracks traffic from Google Ads, Facebook, LinkedIn, email campaigns, QR codes, or any source that sends visitors to your site.