Pricing

from $3.00 / 1,000 domain checks

Domain Health Checker: SPF, DKIM, DMARC, SSL & Security Headers

Bulk-check any list of domains for email deliverability (SPF, DKIM, DMARC, MTA-STS), SSL certificate expiry, DNSSEC and website security headers. Get a 0-100 score, an A-F grade, the mail and DNS provider, and plain-English fixes for every problem.

Pricing

from $3.00 / 1,000 domain checks

Rating

0.0

(0)

Developer

Cobalt Relay

Actor stats

Bookmarked

Total users

Monthly active users

4 days ago

Last modified

Website HTTPS & SSL Health Checker

pillowy_travel/website-https-ssl-health-checker

Checks HTTPS availability and SSL certificate health for given URLs

SAHIL KUMAR

5.0

(2)

Broken Link Checker - Find Dead 404 Links

logiover/broken-link-checker

Site-wide broken link checker: crawl any website, find 404 and dead links, export the link audit to CSV or JSON with source page and status code.

Logiover

DMARC Report Reader

cobalt_relay/dmarc-report-reader

Turns DMARC aggregate (RUA) report files (.xml, .gz, .zip) into a plain-English summary: who is sending email as your domain, what passes, what fails, and exactly what to fix.

Cobalt Relay

HTTP Security Headers Checker — HSTS, CSP, Grade A-F

ninhothedev/security-headers-checker

Bulk security headers scanner: grade any URL A-F on HSTS, CSP, X-Frame-Options & 3 more headers, list missing ones and server leaks. For security audits, agencies and compliance.

ninhothedev

Broken Link Checker & Bulk URL Status Code Checker

kilndata/broken-link-checker

Check the HTTP status of thousands of URLs, or crawl a site and test every link on it. Status code, full redirect chain, final URL, response time, error type (DNS, SSL, timeout, 4xx, 5xx) and the page each broken link sits on. HEAD with GET fallback, polite per-domain limits.

Datakiln

Email Blacklist Checker

cobalt_relay/email-blacklist-checker

Check domains and mail server IPs against email blocklists (SpamCop, Mailspike, PSBL, UCEPROTECT, DroneBL, SpamRATS, Spamhaus with your key). Finds a domain's mail IPs automatically and tells you exactly how to get delisted.

Cobalt Relay

Website Screenshot & PDF - Bulk, Full Page, No Cookie Banners

olsols4/website-screenshot-pdf

Capture any list of URLs as full-page PNG, JPEG or PDF. Hides cookie banners and ads, desktop/tablet/mobile, dark mode, element capture. Get a public file link per page.

Olly

Sitemap URL Extractor & Validator

helveticlabs/sitemap-extractor

Get every URL a website lists in its sitemaps, with last-modified dates. Finds sitemaps through robots.txt, reads sitemap indexes and .gz files, and reports invalid or oversized sitemaps.

Marvin Krieg

Sitemap Inventory Diff

superfreshlabs/sitemap-inventory-diff

Compare two supplied sitemap XML snapshots for added or removed URLs and changed lastmod text. Audit duplicates and malformed entries. Handles urlsets or sitemap indexes; no network fetch or page-content claims.