HTTP Headers Checker
Only query what is needed
Network diagnostics use the domain, URL, or IP you enter to run the requested check and show actionable results.
Quick workflow
- Enter a domain, URL, IP address, or DNS value.
- Run the check and review warnings or records.
- Use the suggested follow-up tools to verify related settings.
Useful tip
For DNS changes, check records first, then propagation, and finally related email or SSL settings.
Suggested next steps
Continue with tools that often pair well with this task.
Browser Cache Policy Checker
Paste response headers to parse max-age, immutable, and no-store, and flag stale-asset cache risk locally.
CDN Cache Header Planner
Pick HTML, hashed assets, and API types to generate Cache-Control values for CDN and browsers locally.
SSL Certificate Checker
Check HTTPS reachability and inspect pasted PEM certificate text.
Canonical URL Checker
Extract canonical links from HTML and flag common SEO canonical mistakes.
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DNS Lookup
Query domain DNS records
Legal Page Link Checker
Pick a site type to generate required privacy, terms, refund, and other legal page links. Saved locally.
Launch QA Report Generator
Combine indexability, accessibility, forms, legal, tracking, and delivery checks into one project report. Export Markdown or a print-ready PDF-style page locally.
Redirect Rule Generator
Generate Nginx, Apache, Netlify, and Vercel redirect rules from old and new URL pairs.
Indexability Matrix Checker
Check whether URLs are indexable, blocked, or conflicted across robots, canonical, sitemap, and header signals
Canonical Sitemap Consistency Auditor
Compare sitemap URLs with canonical CSV data to find non-canonical sitemap entries and missing canonical targets before launch.
DMARC Record Generator
Build DMARC TXT records with policy, report, alignment, and rollout settings
Image Compressor
Batch compress image files