no404 travels through your domain's past, digs up every URL that ever existed, live-checks its status today and serves you every 404 on a silver platter — past in, redirects out, future rescued.
✓ no sign-up · ✓ quick check in under a minute · ✓ Excel export
Old blog posts, deleted products, moved categories — backlinks still point at them. no404 finds every single one.
no404 digs up URLs that vanished ten years ago — your domain's entire past, PDFs and documents included.
Fast HEAD checks with adjustable speed, pause/resume and automatic anti-block cooldowns.
Stack as many include and exclude filters for URL and status as you like — combinable, sortable, and every row recheckable.
Your whole domain or exactly the filtered view as .xlsx — ready for your redirect map.
Redirect chains? one301 follows every chain to its destination and collapses all hops into a single 301.
no404 travels back in time and collects every URL your domain has ever had — subdomains included.
Every URL is requested live. Watch in real time what's 200, 301, 404 or completely gone.
Filter the 404s, export to Excel, build redirects — link juice rescued.
no404 currently runs self-hosted and free. The cloud version with accounts & plans is in the works — here's what it will look like:
Your first scan takes just a few minutes, depending on the domain.
Start scanning for free →