404Finder Broken‐link and error scanner.

A simple utility for those responsible for websites: it finds broken links, 404 and 500 errors, problematic redirects, and other issues before users or search engines see them.

404Finder scans the pages of a website, collects all links, and checks server responses. The result is a list of problematic URLs with error codes and the pages where these links were found.

Download 404Finder Commercial licenses

Free for personal and non‐commercial use. A license is required for business use.

Briefly about 404Finder No ads, no unnecessary modules.

Platform

Windows.

Type

Desktop tool.

For whom

SEO, web studios, website owners.

Reports

CSV / HTML.

What 404Finder can do

The utility does not attempt to be an “all‐in‐one” solution. It focuses on a single task: finding problematic links and server responses on your website.

Search for broken links

Finds links that lead nowhere.

  • 404 Not Found;
  • 500 Internal Server Error;
  • other error response codes;
  • separate list of problematic URLs.

Redirect check

Helps identify suspicious redirects.

  • 3xx redirects (301, 302, etc.);
  • excessively long redirect chains;
  • transitions to external domains.

Report for business

A ready‐made list of tasks for a developer or SEO specialist.

  • Source page + problematic URL;
  • server response code;
  • export to CSV for Excel/Google Sheets;
  • HTML report to send to the client.

Who can benefit from 404Finder

The tool was originally created for personal use, but quickly became useful in a wider range of scenarios.

SEO specialists

SEO / Audit

Regular website audits before release, migration, or project delivery.

  • Preparation for indexing,
  • checks after migration and redesign,
  • reports for clients.

Web studios and developers

Dev / QA

Checking before launching a website and after implementing new modules.

  • Searching for broken links after refactoring,
  • monitoring when changing CMS,
  • quick test bench check.

Project owners

Business

If your website is important to your business, it's a good idea to check it for errors on a regular basis.

  • Find broken sections before customers complain,
  • reduce the risk of traffic loss,
  • give developers a specific list of tasks.

How 404Finder works

A typical usage scenario takes a few minutes.

Startup steps

  1. Specify the starting URL of the site (usually the home page).
  2. Set the crawl depth and, if necessary, restrictions (domain, URL prefix).
  3. Start scanning — 404Finder crawls pages and collects links.
  4. Receive a report: a list of problematic links, source pages, and server response codes.

Settings and modes

The interface contains only the essentials — no clutter.

  • Depth limit (so you don’t get “lost” in thousands of pages).
  • Filter by domain/subdomain.
  • Ability to ignore certain types of URLs (e.g., tracking parameters).
  • Choice of report format and detail level.

Personal and commercial use

404Finder can be used freely for personal and educational purposes. For regular checks in business and client work, we offer commercial licenses.

Personal use

Free of charge.

  • Checking your personal projects.
  • Educational and experimental websites.
  • No resale of services based on reports.

Team / small agency

Recommended for SEO studios

Commercial license.

  • Regular auditing of client websites.
  • Use in team workflows.
  • Priority support.

Enterprise / White‐Label

Discussed separately.

  • Unlimited number of users.
  • White‐Label version for your brand.
  • Part of your product package.

For more information about licensing options, please visit the “Licenses” page. If you are unsure which option is right for you, simply contact us.

Report format

404Finder strives to present results in the most convenient format for your work.

CSV report

For those who like to organize everything into columns.

  • Source page (where the link came from).
  • Problem URL (where the link led to).
  • Server response code.
  • Problem type (404, 500, redirect, etc.).

HTML report

Convenient to send to a client or colleague who doesn’t like CSV.

  • Grouped by error type.
  • Clickable links for quick navigation.
  • List of “what needs to be fixed.”

FAQ

Can I scan sites with authorization?

The basic version of 404Finder is designed for open public sections. Complex scenarios involving authorization and cookies can be discussed separately as a custom modification.

How much load does the utility put on the website?

404Finder does not attempt to overload the server: requests are sent at a reasonable speed. However, when checking large websites, it is best to run the scan during off‐peak hours.

Is 404Finder suitable for large portals?

The utility was originally designed for small and medium‐sized projects. For very large portals, it is better to discuss crawl depth limitations and additional settings.

Can 404Finder be customized for our processes?

Yes, it is possible to add filters, specific report formats, or integrations. See the “Custom Development” section or write to us.

Want to use 404Finder in your company or agency?

Tell us how many websites and employees will be working with the utility, and we will offer you a suitable license option or white label solution.

Download 404Finder Discuss licensing