tellmewhendown.com
Tell Me When Down — monitoring for apps you shipped fast
1 failed · 5 warnings · 22 passed
Audited Sat, 11 Jul 2026 22:30:49 GMT · https://tellmewhendown.com/
Meta & Head
20.1/25
Title, description, canonical, social tags — what search engines read first.
Open Graph tagsmedium impactlow effort
No Open Graph tags found
Open Graph tags control how your page looks when shared on Facebook, LinkedIn, Slack, WhatsApp, and most chat apps; without them, links render as a bare URL or with guessed text, and far fewer people click through. Add four meta tags to <head>: og:title, og:description, og:url, and og:image — an image around 1200x630 pixels works well across platforms. Use absolute https:// URLs for og:image and og:url; relative paths are the most common reason preview images silently fail to appear.
Canonical URLmedium impactlow effort
No <link rel="canonical"> found
When the same page is reachable at several URLs — tracking parameters, trailing-slash variants, http vs https — search engines may split ranking signals across the duplicates. A canonical tag names the one version that should get all the credit. Add <link rel="canonical" href="https://www.example.com/page/"> to the <head>, pointing at the page's preferred absolute URL. Double-check it's self-referencing on the primary version: a canonical that points at the wrong page can quietly de-index the right one.
Twitter card taglow impactlow effort
No twitter:card meta tag found
X (Twitter) layers its own card markup on top of Open Graph, and without a twitter:card tag your shared links may render as plain text instead of a large image preview. Add <meta name="twitter:card" content="summary_large_image"> alongside your Open Graph tags; X will fill in the title, description, and picture from og:title, og:description, and og:image. Keep og:image an absolute URL — a relative or missing image is the usual reason cards show up without a picture.
6 passing checks
- Title tag<title> is "Tell Me When Down — monitoring for apps you shipped fast" (56 characters)
- Meta descriptionMeta description is "Uptime, SSL, security headers, dependency CVEs and secret leaks — monitoring built for people shipping fast with AI coding tools, without a DevOps team." (152 characters)
- Viewport meta tagViewport is "width=device-width, initial-scale=1"
- Character encoding declaredCharacter encoding is declared
- FaviconA <link rel="icon"> is present
- Page allows indexingNo restrictive robots meta tag
Content & Structure
23.2/25
Headings, copy depth, images, structured data, internal linking.
Structured data (JSON-LD)medium impactmedium effort
No JSON-LD structured data blocks found
Structured data makes your listing eligible for rich results — star ratings, FAQs, breadcrumbs, product prices — which occupy more space on the results page and draw more clicks than plain blue links. Add a <script type="application/ld+json"> block with a schema.org type that matches the page: Organization or WebSite for a homepage, Article for posts, Product for product pages. Only mark up content actually visible on the page — markup for invisible content violates Google's guidelines and can earn a manual action.
6 passing checks
- Single H1 heading1 h1 found: "Know your app is down before your users do."
- Heading hierarchy19 headings in order without skipped levels
- Word count3807 words of visible text
- HTML lang attribute<html lang="en">
- JavaScript-dependent contentvisible text ~6435 chars in the initial HTML
- Internal linking21 internal, 0 external links
Technical
23.3/25
HTTPS, redirects, robots, sitemap, speed, crawlability.
XML sitemap availablemedium impactlow effort
no sitemap.xml found
Without an XML sitemap, search engines discover pages only by following links, so new, deep, or weakly linked pages get found slowly or not at all. Generate one at /sitemap.xml — most frameworks and CMSs have a generator built in or as a plugin — listing every canonical, indexable URL, then add "Sitemap: https://www.example.com/sitemap.xml" to robots.txt and submit it in Google Search Console. Keep it clean: listing redirected, noindexed, or 404 URLs erodes crawler trust in the whole file.
Response compression enabledlow impactlow effort
no content-encoding header
This HTML is served uncompressed, so every visitor downloads far more bytes than necessary — text compresses extremely well, and the savings directly speed up first render on slow connections. Enable Brotli or gzip on your server or CDN: in nginx it's "gzip on;" (or the brotli module), in Apache it's mod_deflate via .htaccess, and on most CDNs it's a single toggle. Make sure compression covers all text types (HTML, CSS, JS, JSON, SVG), but skip already-compressed images — recompressing them wastes CPU for no gain.
10 passing checks
- Served over HTTPSfinal URL uses https://
- HTTP redirects to HTTPShttp:// redirects to https://
- No mixed content0 http:// subresource references
- Short redirect chainno redirects; URL resolves directly
- robots.txt present and permissiverobots.txt exists and allows crawling
- Fast time to first byte770 ms
- Reasonable HTML size108.9 KB
- Missing pages return 404missing paths return HTTP 404/410
- www and non-www resolve consistentlywww and non-www converge on the same host
- HTML5 doctype<!DOCTYPE html> present
Performance
Core Web Vitals scoring via Google PageSpeed is coming soon.
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