What I shipped in 60 days

1. 01

   CriticalA 7.8MB hero video is 78% of the entire page weight

   propio_hero_scene.mp4 downloads on first paint on mobile. Total page payload is 10.2MB. On a metered Mexican or Colombian data plan — squarely your market — that is real money to load a landing page.

   /scenes/propio_hero_scene.mp4 → 7,955 KiB of 10,226 KiB total

2. 02

   Criticalrobots.txt serves your Auth0 login page, and it says noindex

   Middleware redirects /robots.txt and /sitemap.xml to /auth/login, so crawlers get HTML instead of crawl rules. Lighthouse parsed 294 errors out of it. Line 14 of what Google receives is a noindex, nofollow directive.

   robots.txt line 14: <meta name="robots" content="noindex, nofollow">

3. 03

   Critical23 seconds of total blocking time, 40.9s of main-thread work

   The page is unresponsive to taps for most of its load on a mid-range Android. 20 long tasks, the worst two being 762ms and 682ms. This is the single biggest reason the performance score is 33.

   TBT 23,020ms · main thread 40.9s · JS execution 7.5s · 20 long tasks

4. 04

   CriticalThe served HTML contains no h1 at all

   The hero heading only exists after hydration, so crawlers and the Semrush bot see a page with no primary heading. It is also the LCP element, which is why LCP waits on JavaScript.

   0 occurrences of <h1> in the raw response body

5. 05

   CriticalApex and www both serve 200, and the apex has no canonical tag

   Two full copies of every page are indexable. This is the root cause of the duplicate title, duplicate content, and duplicate meta description errors in the Semrush report.

   joinpropio.com/ → 200, no canonical · www.joinpropio.com/ → 200, canonical present

6. 06

   HighThe marketing homepage is uncacheable by design

   A static landing page is rendered dynamically on every request and the CDN is explicitly told not to store it. TTFB measures 2.3–2.9s unthrottled and every visitor pays full origin cost.

   cache-control: private, no-cache, no-store · x-cache: CONFIG_NOCACHE

7. 07

   HighA WebGL scene loads above the fold from a third-party CDN

   Unicorn Studio pulls three-bundle.js and the library from jsDelivr, plus a 207KB noise texture and a 53KB matcap from its own CDN. 109KB of that JavaScript is never executed, and the textures are cached for an hour.

   three-bundle.js 163KiB (82.6KiB unused) · blue_noise_med.png 207KiB · 1h TTL

8. 08

   HighThree render-blocking stylesheets hold first paint for 1.97s

   One of them is 58KB on its own and 13KB of the CSS is never used on the page. Lighthouse puts the recoverable time at 930ms.

   77.7 KiB blocking · 1,970ms · est. savings 930ms

9. 09

   HighPostHog loads eight scripts and blocks the main thread for 682ms

   Session recorder, surveys, logs, conversations, dead-click and exception autocapture all initialize on a page whose only job is to get someone to book a demo. The recorder alone is 53KB, and 26KB of the surveys bundle is unused.

   8 scripts on m.joinpropio.com · posthog-recorder.js 682ms long task · 4h TTL

10. 10

    HighAn 800×800 image renders at 56×56

    Two logos are served at 200× and 50× their displayed area through the image optimizer, and the flat two-colour brand marks are JPEGs rather than SVG. Two of them are also requested twice per page load.

    800×800 shown at 56×56 → 83.9 KiB wasted · 102 KiB recoverable total

11. 11

    HighTwo high-severity header findings on a SOC 2 track

    The CSP allows 'unsafe-inline' in script-src and relies on a host allowlist, both of which Lighthouse rates High. There is no COOP header, also High. Nonces or hashes with strict-dynamic would fix the first two. Worth closing before an auditor asks.

    script-src 'unsafe-inline' · no Cross-Origin-Opener-Policy · HSTS missing preload

12. 12

    Medium65KB of polyfills for features every modern browser has

    The build is transpiling Array.prototype.at, flat, flatMap, Object.fromEntries, Object.hasOwn and trimStart/trimEnd. That is a browserslist target that is older than it needs to be.

    65.4 KiB of legacy JavaScript · 269 KiB unused JS overall

13. 13

    Medium709KB of HTML and 53 script tags on first load

    Most of that weight is serialized RSC payload inlined into the document. It is what Semrush reports as low text-to-HTML ratio.

    709,295 bytes · 53 <script> tags · largest single chunk 304 KiB

14. 14

    Mediumllms.txt exists but is malformed

    No H1 and no links, so the agents it is meant to guide cannot use it. Given that Propio sells to firms who will ask ChatGPT about bookkeeping software, this one is cheap and strategic.

    Agentic Browsing 2/3 · missing H1 header · contains no links

15. 15

    MediumThe HTTP homepage answers with a 307 instead of a 301

    A temporary redirect tells search engines not to consolidate link equity onto the HTTPS URL. This is a one-line config change.

    http://joinpropio.com/ → 307 Temporary Redirect

Three sources, all reproducible: the Semrush site audit, your PageSpeed Insights run (Lighthouse 13.4.0, emulated Moto G Power, Slow 4G), and my own pass with Chrome DevTools and curl to confirm the causes. There is no CrUX field data for the domain yet, so all of it is lab-measured.