ability.bio website review

52 files are served with short cache lifetimes, so returning visitors download them again (25.3 MB).

20 images could be 24.2 MB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

Your mobile performance score is 89. Pages that score under 90 lose visitors before the first paint.

3 files block the first paint until they finish downloading. Deferring or inlining them could save about 750 ms.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

1 third-party service load with your homepage (cdn-cookieyes.com), adding 1 KiB and 0 ms of main-thread time.

Visually, the page fills in at 24.3 s (Speed Index). Good is under 3.4 s.

Chrome's UX Report (opens in a new tab) has too little real-visitor traffic for this site, so the figures here are lab measurements from Google's test phone on a throttled 4G connection.

Your homepage downloads 26.7 MB in 54 requests on a phone: images 26.0 MB (37), fonts 529 KiB (7) and scripts 76 KiB (7). Under 2 MB keeps phones on slow connections fast.

16 images weigh 25.1 MB together. On a phone connection a single image that size takes seconds.

19 images are downloaded at several times the size a phone draws them, for example stephanie-boisvert-june-2026.png at 1,239 px wide, shown at 170 px. Resized copies would save about 21.2 MB.

22 images (26.0 MB) are JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

19 images further down the page (25.7 MB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

By the Sustainable Web Design model, a visit to your homepage emits about 7.56 g of CO₂e: 907.1 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

11 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

11 visible links have no text or label, so screen readers cannot say where they go.

Elements with visible text labels do not have matching accessible names. (2 elements).

Your title is 78 characters, so Google will cut it off around 60: “Ability Biotherapeutics – The world’s premier biotherapeutic targeting company”.

3 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

The homepage links to 27 pages on ability.bio and 19 external pages.

There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

There is no /llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

Your homepage links to /en/imunify-bot-check, which answers with an error. Visitors hit a dead end and search engines drop it.

/ and /en all use the title “Ability Biotherapeutics – The world’s premier biotherapeutic targetin…”. Search engines can't tell which page to show for a search, so each competes with the others.

We fetched 9 pages linked from your homepage and read each the way a search engine does.

1 error was logged to the browser console while the page loaded, for example “Failed to load resource: the server responded with a status of 403 ()”.

1 link from your homepage to your own site is broken, for example https://www.ability.bio/en/imunify-bot-check (404).

8 links to other sites are dead, for example https://www.linkedin.com/in/angele (999).

3 links go through two or more redirects, for example https://linkedin.com/in/mosirard/.

X-XSS-Protection is set to “1; mode=block”; the header is deprecated and can introduce bugs. Use 0 or remove it.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

ability.bio is registered until Dec 2026. Make sure auto-renew is on and the card on file is current.

ability.bio has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

On a phone, there is no call to action on the first screen: visitors have to scroll to find out what to do next.

Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.

Social proof on the homepage: 7 customer or partner logos. Pairing it with named testimonials or customer logos makes it far more convincing.

The homepage shows no opening hours. If customers visit or call, show when.

There is no form on the homepage, so every lead has to click through to another page first.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 495 words of visible text.

ability.bio has no DMARC record, so nothing tells receivers what to do with mail that fails SPF or DKIM. Gmail and Yahoo require DMARC from bulk senders.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

Loading the homepage contacts 1 host run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.