11 New Website Inspector Tools: OG Preview, DNS, SSL, PageSpeed & More

Eleven new tools, one URL bar each. Whether you're shipping a landing page, debugging a redirect chain, or auditing a competitor's SEO setup — we built the obvious utilities you reach for and bundled them into one no-signup tool surface.

Pulsyr Tools started as a privacy-first PDF and image converter set. Then Website Multi-Device Preview and Sheet Tracker opened up the “browser-first interactive tools” category. This release leans further in that direction with 11 tools that all share a similar shape: paste a URL or domain, get a clean answer, optionally download or share.

Each one already exists in some form on the internet. We built them anyway because every existing version we found has at least one of these problems: needs a signup, gates results behind a paywall, drowns the answer in ads, or doesn't render the result well.

What shipped

OG Link Preview — Paste a URL, see exactly how it'll render when shared on Twitter / X, LinkedIn, Slack, iMessage, and Discord. Side-by-side previews of each platform's rendering. Catches missing or wrong Open Graph tags before you ship the link to a campaign.

HTTP Headers Inspector — Every response header for any URL plus the full redirect chain (each hop with status code), and a security-header scorecard for HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. Useful before pointing a domain at a fresh deploy.

SSL Certificate Checker — Subject, issuer, valid-from / valid-to dates, days remaining, alt names, fingerprint, TLS protocol, and negotiated cipher. The expiry banner turns amber 30 days out and red on day-zero — saves you from the “wait, our cert expired again?” outage.

DNS Lookup — A, AAAA, MX, TXT, CNAME, NS, and SOA in one view. TXT shows SPF / DMARC / verification records. MX is sorted by priority. No need to flip between three tabs of dnschecker.org.

WHOIS Lookup (RDAP) — Domain registrar, registration date, expiry, status flags, and authoritative nameservers. Powered by RDAP — the modern, JSON-clean replacement for legacy WHOIS scraping. GDPR redacts most personal data for individual registrants, but registrar / dates / status / nameservers are still reliable.

Robots.txt & Sitemap Inspector — Fetches and parses any site's robots.txt, lists every sitemap referenced, and peeks inside each sitemap to show its URL count and a sample. Useful for technical SEO audits — and for double-checking your own sitemap before submitting to Google Search Console.

URL to PDF — Renders any URL as a clean, full-page PDF using server-side headless Chromium. Choose paper size (A4 / Letter / A3 / Legal) and orientation. Server-side rendering means JavaScript-heavy pages render correctly — content the browser print dialog completely mangles still comes through.

OG Image Generator — Pulls a URL's title, description, and site name, then renders a Pulsyr-styled 1200×630 social card you can drop straight into your og:imagemeta tag. Saves the “wait, I need to design a social card for this blog post” loop.

Page Weight Analyzer — Loads any URL in headless Chromium, captures every request, and reports total bytes, request count, breakdown by resource type (script / stylesheet / image / font / etc.), the 10 largest assets, and a render-blocking warning when you've got too many synchronous scripts in <head>. Calls out images over 100 KB so the “why is this page so slow” question becomes “ok, that hero image is 4 MB.”

Page Speed Audit — Lighthouse-powered scorecard for any URL. Performance, Accessibility, Best Practices, and SEO scores plus lab metrics (LCP, FCP, CLS, TBT, Speed Index, TTI), and Core Web Vitals from real-user data (CrUX) when Google has it for the domain. Choose mobile or desktop strategy. Powered by the free PageSpeed Insights API.

Plus the two bespoke tools we shipped earlier this month — Website Multi-Device Preview and Sheet Tracker — round out a 13-tool browser-first surface alongside the existing 13 PDF / image / data converters.

Why we built each one

These aren't novel ideas. There's already a tool for each of these tasks. We rebuilt them because the existing ones share a frustrating shape:

SEO/marketing tools (link preview, schema, og image) often gate the actual answer behind a signup.
WHOIS sites that load 40 ad scripts to show four lines of text.
SSL checkers that blast you with “buy our cert!” CTAs.
PageSpeed runners that crash mid-audit because they're running real Lighthouse on Vercel Hobby.
DNS tools with three tabs and two pop-ups for a single MX query.

The Pulsyr versions follow the same pattern as the rest of the tool suite: paste, click, get the answer, leave. No account. No quota. No upsell on the result page.

How safe are these (for the targets)?

Two things to call out, since we send requests to URLs you provide:

Server-side SSRF protection.Every URL passes through a guard that resolves the hostname and rejects anything pointing to a private network address — localhost, RFC1918 (10.x, 172.16-31.x, 192.168.x), link-local (169.254.x), or IPv6 private ranges. The HTTP Headers tool re-checks every redirect hop, so a redirect can't trick us into hitting an internal address.
Reasonable rate behaviour.Each tool sends a single, polite request with a recognizable user-agent. We don't crawl recursively. The robots/sitemap tool is the only one that fetches more than one URL — it pulls the robots.txt and up to 5 sitemaps the site itself referenced.

What's next

Tools we're considering for upcoming releases — let us know what you'd use:

Broken link checker — crawl a page, list every outgoing link with its status code.
Schema markup generator — JSON-LD for Article / Product / FAQ / LocalBusiness with a form interface.
UTM builder — URL + source/medium/campaign → tagged link with QR code.
Meta tag generator — fill a form, get a paste-ready <head> snippet.
JSON / JWT / regex / hash dev utilities — the obvious in-browser dev set.
India-specific calculators — EMI, salary gross↔net, GST, income tax (FY 2026-27 slabs), SIP/FD/RD.

If there's a tool you reach for repeatedly that always involves signing up for something, message us — we're prioritizing the next batch by what real users ask for.

Try them

All 11 are live at pulsyr.in/tools/website-tools. Free forever, no signup, no signup-walled credits, no rate-limited “upgrade for more” nonsense. The PageSpeed tool uses Google's free PageSpeed Insights API (25k queries/day quota, more than enough). Everything else is self-hosted on the same Pulsyr infrastructure.