www.adafruit.com speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 15:46 UTC. Grade C (74/100), with the screenshots, the timings and the fixes that matter.

https://www.adafruit.com/

20 October 2026 at 15:46 UTC · Free test · report pt_eb6e87a7ee58
Grade
C
74/100
Performance76/100
Structure71/100

10 audit(s) passed, 6 need work

First byte (TTFB)450 msmeasured from this server
Fully loaded5.51 sfirst byte + slowest asset
Requests26document + assets
Page weight1.10 MBcompressed transfer
HTML document11.2 KBbr
ProtocolHTTP/3cloudflare
Third-party1.04 MBother hosts

Where the first byte went

  • DNS lookup 95 ms 21%
  • TCP connect 54 ms 12%
  • Server wait 301 ms 67%

Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.

How this page compares

First bytefaster than 50% of 4,999 pages tested here450 ms against a median of 448 ms
Page weightheavier than 66% of 4,999 pages tested here1.10 MB against a median of 650.3 KB
Fully loadedslower than 92% of 4,999 pages tested here5.51 s against a median of 1.84 s
Requestssends more requests than 100% of 4,999 pages tested here26 against a median of 26

Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.

What these numbers mean

  • The first byte arrived in 450 ms. That is workable, and the cheapest win left is caching or a warmer connection.
  • The page transfers 1.10 MB over 26 request(s). Images files are 95% of it, so resize and recompress the largest images before anything else.
  • The HTML itself arrives br-compressed.
  • It runs over HTTP/3, so the assets share a connection instead of opening one each.
  • 95% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.

Fix first: Server response time (TTFB) - Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.

Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.

No screenshot for this report.

The headless browser did not capture this page when the test ran, so only the server measurements are shown.

Page weight by type

What the page is made of

Images 22 requests
1.04 MB 95%
Javascript 3 requests
47.8 KB 4%

Transfer size, compressed as sent. 26 request(s) in total, 1.10 MB across all of them.

Top issues

Server response time (TTFB)

high impact

The first byte arrived after 450 ms. Of that, 301 ms was the server thinking and 149 ms was connection setup. A first byte under 400 ms is what a visitor feels as instant.

Fix: Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.

Image delivery and format

high impact

1 image(s) over 200 KB and 1 large image(s) still served as JPEG or PNG.

Fix: Serve WebP or AVIF with a JPEG fallback, size images to the space they occupy, and lazy-load anything below the fold. Images are usually more than half of a slow page.

Render-blocking resources

high impact

6 render-blocking resource(s) in the document head (3 script(s), 3 stylesheet(s)). The page cannot paint until each one arrives.

Fix: Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.

Total page weight

medium impact

The page transfers 1.10 MB across 26 request(s), with the document itself at 11.2 KB.

Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.

Third-party weight

medium impact

2 third-party host(s) serve 1.04 MB of this page. Each one is another DNS lookup, TLS handshake and point of failure you do not control.

Fix: Self-host the libraries you can, drop the tags you cannot justify, and preconnect the ones you keep.

Waterfall

Slowest requests

IMAGEScdn-shop.adafruit.com/content_cards/adafruit_halloween_gift_…
5.06 s
IMAGEScdn-shop.adafruit.com/310x233/6407-05.jpg
5.06 s
IMAGEScdn-shop.adafruit.com/310x233/6527-00.jpg
5.06 s
IMAGEScdn-shop.adafruit.com/100x75/6524-00.jpg
5.06 s
IMAGEScdn-shop.adafruit.com/100x75/6527-00.jpg
5.06 s
IMAGEScdn-shop.adafruit.com/310x233/6333-04.jpg
5.06 s
IMAGEScdn-shop.adafruit.com/100x75/6407-05.jpg
1.09 s
IMAGEScdn-shop.adafruit.com/product-videos/320x240/6353-05.jpg
1.07 s
IMAGEScdn-shop.adafruit.com/heroes/bluefruit_wireless.jpg
1.07 s
IMAGEScdn-shop.adafruit.com/heroes/adafruit_JPPPoW_hero.jpg
1.07 s

Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party

RequestTypeStatusTimeSize
https://cdn-shop.adafruit.com/content_cards/adafruit_halloween_gift_guide_sale_2026_640x440_Content_Card.jpg 3rd partyimages2005.06 s54.6 KB
https://cdn-shop.adafruit.com/310x233/6407-05.jpg 3rd partyimages2005.06 s15.3 KB
https://cdn-shop.adafruit.com/310x233/6527-00.jpg 3rd partyimages2005.06 s9.4 KB
https://cdn-shop.adafruit.com/100x75/6524-00.jpg 3rd partyimages2005.06 s1.9 KB
https://cdn-shop.adafruit.com/100x75/6527-00.jpg 3rd partyimages2005.06 s1.8 KB
https://cdn-shop.adafruit.com/310x233/6333-04.jpg 3rd partyimages2005.06 s6.3 KB
https://cdn-shop.adafruit.com/100x75/6407-05.jpg 3rd partyimages2001.09 s2.7 KB
https://cdn-shop.adafruit.com/product-videos/320x240/6353-05.jpg 3rd partyimages2001.07 s8.6 KB
https://cdn-shop.adafruit.com/heroes/bluefruit_wireless.jpg 3rd partyimages2001.07 s96.0 KB
https://cdn-shop.adafruit.com/heroes/adafruit_JPPPoW_hero.jpg 3rd partyimages2001.07 s54.3 KB
https://cdn-shop.adafruit.com/100x75/6526-00.jpg 3rd partyimages200981 ms1.8 KB
https://www.adafruit.com/includes/templates/shop2019/dist/adafruit_shop.lib.min.a813855f2b.jsjavascript200974 ms12.9 KB
https://cdn-learn.adafruit.com/groups/images/000/000/032/original/Servo_Explore.png?1660319925 3rd partyimages200969 ms746.8 KB
https://cdn-shop.adafruit.com/310x233/6526-00.jpg 3rd partyimages200948 ms10.6 KB
https://cdn-shop.adafruit.com/310x233/6065-01.jpg 3rd partyimages200944 ms12.6 KB
https://www.adafruit.com/includes/templates/shop2019/images/adafruit-logo.pngimages200944 ms1.0 KB
https://www.adafruit.com/includes/templates/shop2019/images/adafruit_logo_small.pngimages200943 ms921 B
https://cdn-shop.adafruit.com/310x233/6524-00.jpg 3rd partyimages200942 ms11.6 KB
https://www.adafruit.com/includes/templates/shop2019/jscript/lite-yt-embed.jsjavascript200939 ms3.9 KB
https://www.adafruit.com/includes/javascript/jquery.min.jsjavascript200938 ms31.0 KB
https://cdn-shop.adafruit.com/100x75/6065-01.jpg 3rd partyimages200937 ms1.8 KB
https://cdn-shop.adafruit.com/100x75/6354-06.jpg 3rd partyimages200929 ms1.8 KB
https://cdn-shop.adafruit.com/100x75/6333-04.jpg 3rd partyimages200923 ms1.2 KB
https://cdn-shop.adafruit.com/home-ads/20250317-124421-12.jpg 3rd partyimages200915 ms18.9 KB
https://cdn-shop.adafruit.com/310x233/6354-06.jpg 3rd partyimages200909 ms7.1 KB
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