Webperf result optimizely.com

Standards section:
- Page not found, no valid text founderror
Tested:
- https://www.optimizely.com/30f89/finns-det-en-sida/pa-den-har-adressen/testanrop/

- Page not found, no valid title foundwarning
Tested:
- https://www.optimizely.com/30f89/finns-det-en-sida/pa-den-har-adressen/testanrop/

- Page not found, no valid h1 header foundwarning
Tested:
- https://www.optimizely.com/30f89/finns-det-en-sida/pa-den-har-adressen/testanrop/

- Page not found, no valid body text found, may because it is too shortwarning
Tested:
- https://www.optimizely.com/30f89/finns-det-en-sida/pa-den-har-adressen/testanrop/

- Page not found, has expected 404 responseok
- Page not found, valid text foundok
- Page not found, valid 404 response status code usedok
- Page not found, used supported localeok
- Page not found, network is usableok

Security section:
- Sitemap, Url in <loc> has to start with https://ok
- security.txt is missingok
- security.txt has incorrect contentok
- security.txt is missing the required contact infook
- security.txt requires expiration information (added in draft v10) is missingok

Standards section:
- Sitemap, No duplicate Urls in <loc> allowedwarning
Tested:
- https://www.optimizely.com/

- Feed is missing in the HTML's metadatawarning
Tested:
- https://www.optimizely.com/

- robots.txt is missing, not allowed to download or has not the expected contentok
- Sitemap is not specified in robots.txtok
- Sitemap, no valid sitemap foundok
- Sitemap, Url in <loc> must use same domain as robots.txtok
- Sitemap, lists other stuff then webpagesok
- Sitemap, is exceeding 50 000 itemsok
- Sitemap, has no itemsok

Accessibility section:
- This button element does not have a name available to an accessibility API. Valid names are: title , element content, aria-label , aria-labelledby .error
Tested:
- https://www.optimizely.com/

- This fieldset element does not have a name available to an accessibility API. Valid names are: legend element, aria-label , aria-labelledby .error
Tested:
- https://www.optimizely.com/

- Fieldset does not contain a legend element. All fieldsets should contain a legend element that describes a description of the field group.error
Tested:
- https://www.optimizely.com/

- This element has insufficient contrast at this conformance level. Expected a contrast ratio of at least 4.5:1, but text in this element has a contrast ratio of 4.16:1. Recommendation: change background to #f8fff2.error
Tested:
- https://www.optimizely.com/

- This link points to a named anchor "cookie-settings" within the document, but no anchor exists with that name.error
Tested:
- https://www.optimizely.com/

- Rather poor on user privacy.

Security section:
- HTTPS by default is good! 5.00
- HTTP Strict Transport Security HSTS is ok, with 3 error(s) and 0 warning(s). 3.50
- Content Security Policy is pretty bad. 1.00
- Reporting CSP Certificate Transparency Network Error Logging is good! 5.00
- Referrer Policy is not that good. 2.50
- Subresource Integrity SRI is pretty bad. 1.00
- HTTP headers is ok, with 1 error(s) and 0 warning(s). 4.50
- Cookies is ok, with 48 error(s) and 0 warning(s). 1.00

- The website is generating a lot of carbon dioxide, for every pageview :(
- Carbon dioxide per pageview: 11.3 gram(s)
- More green than 6 % of the websites tested by webperf.se (Reference updated: 2026-06-07).
- Network transfer size: 17.87 MB 0.30

- Web server used: envoy, kestrel, nginx
- Technology used: c, es6, js, mp4, typescript
- License(s) used: apache-2.0
- Metadata used: apple-touch-icon, canonical, dns-prefetch, icon, open-graph, preload, viewport
- Javascript libraries used: babel, clarity, clarity-js, core-js, domready, next.js, rive-wasm, util, uuid
- Languages found: de, en, x-default
- Image formats used: gif, jpeg, png, svg

Accessibility section:
##### You don't seem to be using accessibility overlay software 5.00

Security section:
##### Software is behind >=25 versions 2.75

###### Introduction:
Software used is behind 25 or more version compared to latests.
This is a good indicator that you need to update to latest version.
It also indicate that you don't have a good package routine for your software.
You can fix this by updating software to latest version.

###### Detected software(s):
- core-js 3.32.2

###### Affected resource(s):
- https://connect.facebook.net/en_US/fbevents.js
##### Software is behind >=1 versions 4.9

###### Introduction:
Software used is behind 1 or more version compared to latests.
This is a small indicator that you need to update to latest version.
You can fix this by updating software to latest version.

###### Detected software(s):
- nginx 1.30.4

###### Affected resource(s):
- https://947-rke-048.mktoresp.com/webevents/visitWebPage?_mchNc=1790176309184&_mchCn=&_mchId=947-RKE-048&_mchTk=_mch-optimizely.com-f9897965783877587f8b85dbc9481187&_mchHo=www.optimizely.com&_mchPo=&_mchRu=%2F&_mchPc=https%3A&_mchVr=165&_mchEcid=&_mchHa=&_mchRe=&_mchQp=
##### NO Common Vulnerabilities and Exposures found 5.00
##### Opensource software used seem to be maintained 5.00
##### You don't seem to be using 'END OF LIFE' software 5.00

Standards section:
- CSS, Disallow unknown type selectorserror
More info:
- https://stylelint.io/user-guide/rules/selector-type-no-unknown

Tested:
- https://www.optimizely.com/_next/static/immutable/chunks/0ezfl8l40jazd.css

- CSS, Disallow unknown custom propertieswarning
More info:
- https://stylelint.io/user-guide/rules/no-unknown-custom-properties

Tested:
- https://www.optimizely.com/_next/static/immutable/chunks/3g6uzwax9mowc.css
- https://www.optimizely.com/_next/static/immutable/chunks/3ph33ndovq8k2.css

- CSS, Disallow deprecated keywords for properties within declarationswarning
More info:
- https://stylelint.io/user-guide/rules/declaration-property-value-keyword-no-deprecated

Tested:
- https://www.optimizely.com/_next/static/immutable/chunks/3g6uzwax9mowc.css

- CSS, Disallow deprecated propertieswarning
More info:
- https://stylelint.io/user-guide/rules/property-no-deprecated

Tested:
- https://www.optimizely.com/_next/static/immutable/chunks/3g6uzwax9mowc.css

- CSS, Disallow unknown annotationsok
More info:
- https://stylelint.io/user-guide/rules/annotation-no-unknown

- CSS, Disallow unknown descriptors for at-rulesok
More info:
- https://stylelint.io/user-guide/rules/at-rule-descriptor-no-unknown

- CSS, Disallow unknown values for descriptors within at-rulesok
More info:
- https://stylelint.io/user-guide/rules/at-rule-descriptor-value-no-unknown

- CSS, Disallow deprecated at-rulesok
More info:
- https://stylelint.io/user-guide/rules/at-rule-no-deprecated

- CSS, Disallow unknown at-rulesok
More info:
- https://stylelint.io/user-guide/rules/at-rule-no-unknown

- CSS, Disallow invalid preludes for at-rulesok
More info:
- https://stylelint.io/user-guide/rules/at-rule-prelude-no-invalid

- CSS, Disallow empty blocksok
More info:
- https://stylelint.io/user-guide/rules/block-no-empty

- CSS, Disallow invalid hex colorsok
More info:
- https://stylelint.io/user-guide/rules/color-no-invalid-hex

- CSS, Disallow empty commentsok
More info:
- https://stylelint.io/user-guide/rules/comment-no-empty

- CSS, Disallow unknown values for properties within declarationsok
More info:
- https://stylelint.io/user-guide/rules/declaration-property-value-no-unknown

- CSS, Disallow non-standard direction values for linear gradient functionsok
More info:
- https://stylelint.io/user-guide/rules/function-linear-gradient-no-nonstandard-direction

- CSS, Disallow unknown functionsok
More info:
- https://stylelint.io/user-guide/rules/function-no-unknown

- CSS, Disallow unknown media feature namesok
More info:
- https://stylelint.io/user-guide/rules/media-feature-name-no-unknown

- CSS, Disallow unknown values for media featuresok
More info:
- https://stylelint.io/user-guide/rules/media-feature-name-value-no-unknown

- CSS, Disallow invalid media queriesok
More info:
- https://stylelint.io/user-guide/rules/media-query-no-invalid

- CSS, Disallow deprecated media typesok
More info:
- https://stylelint.io/user-guide/rules/media-type-no-deprecated

- CSS, Disallow invalid named grid areasok
More info:
- https://stylelint.io/user-guide/rules/named-grid-areas-no-invalid

- CSS, Disallow empty sourcesok
More info:
- https://stylelint.io/user-guide/rules/no-empty-source

- CSS, Disallow invalid double-slash commentsok
More info:
- https://stylelint.io/user-guide/rules/no-invalid-double-slash-comments

- CSS, Disallow invalid position `@import` rulesok
More info:
- https://stylelint.io/user-guide/rules/no-invalid-position-at-import-rule

- CSS, Disallow invalid position declarationsok
More info:
- https://stylelint.io/user-guide/rules/no-invalid-position-declaration

- CSS, Disallow unknown animationsok
More info:
- https://stylelint.io/user-guide/rules/no-unknown-animations

- CSS, Disallow unknown custom media queriesok
More info:
- https://stylelint.io/user-guide/rules/no-unknown-custom-media

- CSS, Disallow unknown propertiesok
More info:
- https://stylelint.io/user-guide/rules/property-no-unknown

- selector-no-deprecatedok
More info:
- https://stylelint.io/user-guide/rules/selector-no-deprecated

- selector-no-invalidok
More info:
- https://stylelint.io/user-guide/rules/selector-no-invalid

- CSS, Disallow unknown pseudo-class selectorsok
More info:
- https://stylelint.io/user-guide/rules/selector-pseudo-class-no-unknown

- CSS, Disallow unknown pseudo-element selectorsok
More info:
- https://stylelint.io/user-guide/rules/selector-pseudo-element-no-unknown

- CSS, Disallow invalid syntax stringsok
More info:
- https://stylelint.io/user-guide/rules/syntax-string-no-invalid

- CSS, Disallow unknown unitsok
More info:
- https://stylelint.io/user-guide/rules/unit-no-unknown

Standards section:
- Require `id` to be a valid identifiererror
More info:
- https://html-validate.org/rules/valid-id.html

Tested:
- https://www.optimizely.com/

- Validate permitted attribute valueserror
More info:
- https://html-validate.org/rules/attribute-allowed-values.html

Tested:
- https://www.optimizely.com/

- Require elements to be closed in correct ordererror
More info:
- https://html-validate.org/rules/close-order.html

Tested:
- https://www.optimizely.com/

- Ensure required attributes are seterror
More info:
- https://html-validate.org/rules/element-required-attributes.html

Tested:
- https://match.adsrvr.org/track/cei?advertiser_id=p8crqh7&cookie_sync=1&upv=3.0.0&upid=mkros1a&ref=https%3a%2f%2fwww.optimizely.com&redirect=1

- Ensure required elements are presenterror
More info:
- https://html-validate.org/rules/element-required-content.html

Tested:
- https://match.adsrvr.org/track/cei?advertiser_id=p8crqh7&cookie_sync=1&upv=3.0.0&upid=mkros1a&ref=https%3a%2f%2fwww.optimizely.com&redirect=1

- Require attributes to be separated by whitespaceok
More info:
- https://html-validate.org/rules/attr-spacing.html

- Require attribute to be used in correct contextok
More info:
- https://html-validate.org/rules/attribute-misuse.html

- Disallow end tags from having attributesok
More info:
- https://html-validate.org/rules/close-attr.html

- Disallow usage of deprecated elementsok
More info:
- https://html-validate.org/rules/deprecated.html

- Disallow usage of deprecated rulesok
More info:
- https://html-validate.org/rules/deprecated-rule.html

- Require usage of `html` doctypeok
More info:
- https://html-validate.org/rules/doctype-html.html

- Disallow invalid element namesok
More info:
- https://html-validate.org/rules/element-name.html

- Validate permitted contentok
More info:
- https://html-validate.org/rules/element-permitted-content.html

- Validate permitted number of element occurrencesok
More info:
- https://html-validate.org/rules/element-permitted-occurrences.html

- Validate required element orderok
More info:
- https://html-validate.org/rules/element-permitted-order.html

- Validate permitted element parentok
More info:
- https://html-validate.org/rules/element-permitted-parent.html

- Require `<map name>` to be uniqueok
More info:
- https://html-validate.org/rules/map-dup-name.html

- Require name and id to match on `<map>` elementsok
More info:
- https://html-validate.org/rules/map-id-name.html

- Disallow usage of deprecated attributesok
More info:
- https://html-validate.org/rules/no-deprecated-attr.html

- Disallow duplicated attributesok
More info:
- https://html-validate.org/rules/no-dup-attr.html

- Disallow duplicated IDsok
More info:
- https://html-validate.org/rules/no-dup-id.html

- Disallow multiple `<main>`ok
More info:
- https://html-validate.org/rules/no-multiple-main.html

- Disallow the use of unescaped special charactersok
More info:
- https://html-validate.org/rules/no-raw-characters.html

- Disallow unused disable directivesok
More info:
- https://html-validate.org/rules/no-unused-disable.html

- Require end tag for `<script>`ok
More info:
- https://html-validate.org/rules/script-element.html

- Disallow unrecognized character referencesok
More info:
- https://html-validate.org/rules/unrecognized-char-ref.html

- Require autocomplete attribute to be validok
More info:
- https://html-validate.org/rules/valid-autocomplete.html

- Disallow void element with contentok
More info:
- https://html-validate.org/rules/void-content.html

Security section:
- Javascript, disallow javascript: URLserror
More info:
- https://eslint.org/docs/latest/rules/no-script-url

Tested:
- https://d1igp3oop3iho5.cloudfront.net/v2/8yoUTdBkNwpVOLCXeZpKdw/zaius-min.js
- https://www.optimizely.com/_next/static/immutable/chunks/2ubee6i_t47ts.js
- https://www.googletagmanager.com/gtm.js?id=GTM-59ZNLHC
- https://www.googletagmanager.com/gtag/js?id=G-C7SLJ6HMJ5&cx=c&gtm=4e69l1
- https://cdn.optimizely.com/js/26942930964.js

- Javascript, disallow the use of eval()error
More info:
- https://eslint.org/docs/latest/rules/no-eval

Tested:
- https://cdn.optimizely.com/js/26942930964.js
- https://www.googletagmanager.com/gtm.js?id=GTM-59ZNLHC
- https://js.zi-scripts.com/zi-tag.js

- Javascript, disallow the use of eval()-like methodsok
More info:
- https://eslint.org/docs/latest/rules/no-implied-eval

Standards section:
- no-debuggerok
More info:
- https://eslint.org/docs/latest/rules/no-debugger

- Performance only 1.30
- Accessibility only 4.00

- third-party-cookieserror
Tested:
- https://www.optimizely.com/

- errors-in-consoleerror
Tested:
- https://www.optimizely.com/

- valid-source-mapserror
Tested:
- https://www.optimizely.com/

- The browser reports problems on the pageerror
Tested:
- https://www.optimizely.com/

- The page uses a secure connection (HTTPS)ok
Tested:
- https://www.optimizely.com/

- geolocation-on-startok
Tested:
- https://www.optimizely.com/

- notification-on-startok
Tested:
- https://www.optimizely.com/

- csp-xssok
Tested:
- https://www.optimizely.com/

- has-hstsok
Tested:
- https://www.optimizely.com/

- origin-isolationok
Tested:
- https://www.optimizely.com/

- trusted-types-xssok
Tested:
- https://www.optimizely.com/

- paste-preventing-inputsok
Tested:
- https://www.optimizely.com/

- image-aspect-ratiook
Tested:
- https://www.optimizely.com/

- Images look sharp at the right resolutionok
Tested:
- https://www.optimizely.com/

- doctypeok
Tested:
- https://www.optimizely.com/

- charsetok
Tested:
- https://www.optimizely.com/

- js-librariesok
Tested:
- https://www.optimizely.com/

- deprecationsok
Tested:
- https://www.optimizely.com/

- is-crawlableok
Tested:
- https://www.optimizely.com/

- The page has a titleok
Tested:
- https://www.optimizely.com/

- meta-descriptionok
Tested:
- https://www.optimizely.com/

- http-status-codeok
Tested:
- https://www.optimizely.com/

- link-textok
Tested:
- https://www.optimizely.com/

- crawlable-anchorsok
Tested:
- https://www.optimizely.com/

- robots-txtok
Tested:
- https://www.optimizely.com/

- Images have alternative text for screen readersok
Tested:
- https://www.optimizely.com/

- hreflangok
Tested:
- https://www.optimizely.com/

- canonicalok
Tested:
- https://www.optimizely.com/

- Insecure traffic (HTTP) is forwarded to secure (HTTPS)ok
- clickjacking-mitigationok
- structured-dataok

Accessibility section:
- Buttons lack a name a screen reader can read outerror
Tested:
- https://www.optimizely.com/

- Text has too little contrast against the background and is hard to readerror
Tested:
- https://www.optimizely.com/

- Accessibility markup (ARIA) fits the elements it's onok
Tested:
- https://www.optimizely.com/

- Accessibility markup (ARIA) is used according to the rulesok
Tested:
- https://www.optimizely.com/

- No outdated accessibility roles (ARIA) are usedok
Tested:
- https://www.optimizely.com/

- The page is not hidden from screen readersok
Tested:
- https://www.optimizely.com/

- Hidden elements can't be reached with the keyboardok
Tested:
- https://www.optimizely.com/

- Elements only have allowed accessibility markup (ARIA)ok
Tested:
- https://www.optimizely.com/

- Elements have the required accessibility markup (ARIA)ok
Tested:
- https://www.optimizely.com/

- Accessibility roles (ARIA) have valid valuesok
Tested:
- https://www.optimizely.com/

- Accessibility markup (ARIA) has valid valuesok
Tested:
- https://www.optimizely.com/

- Accessibility markup (ARIA) is correctly spelled and validok
Tested:
- https://www.optimizely.com/

- The page has a titleok
Tested:
- https://www.optimizely.com/

- frame-titleok
Tested:
- https://www.optimizely.com/

- The headings are in the right orderok
Tested:
- https://www.optimizely.com/

- The page states which language it's written inok
Tested:
- https://www.optimizely.com/

- The page's language setting is validok
Tested:
- https://www.optimizely.com/

- Images have alternative text for screen readersok
Tested:
- https://www.optimizely.com/

- labelok
Tested:
- https://www.optimizely.com/

- Links can be told apart even without colorok
Tested:
- https://www.optimizely.com/

- Links have text describing where they gook
Tested:
- https://www.optimizely.com/

- Visitors can zoom on the pageok
Tested:
- https://www.optimizely.com/

- tabindexok
Tested:
- https://www.optimizely.com/

- Tap targets are big enough and spaced apartok
Tested:
- https://www.optimizely.com/

- video-captionok
Tested:
- https://www.optimizely.com/

- landmark-one-mainok
Tested:
- https://www.optimizely.com/

- label-content-name-mismatchok
Tested:
- https://www.optimizely.com/

- accesskeysok
- aria-command-nameok
- aria-dialog-nameok
- aria-input-field-nameok
- aria-meter-nameok
- aria-progressbar-nameok
- Elements have the child elements accessibility tools requireok
- Elements are inside the parent element accessibility tools requireok
- aria-textok
- aria-toggle-field-nameok
- aria-tooltip-nameok
- aria-treeitem-nameok
- bypassok
- definition-listok
- dlitemok
- duplicate-id-ariaok
- form-field-multiple-labelsok
- html-xml-lang-mismatchok
- input-button-nameok
- input-image-altok
- Lists contain only list itemsok
- List items sit inside a real listok
- meta-refreshok
- object-altok
- select-nameok
- skip-linkok
- td-headers-attrok
- th-has-data-cellsok
- valid-langok
- focusable-controlsok
- interactive-element-affordanceok
- logical-tab-orderok
- visual-order-follows-domok
- focus-trapsok
- managed-focusok
- use-landmarksok
- offscreen-content-hiddenok
- custom-controls-labelsok
- custom-controls-rolesok
- table-duplicate-nameok
- empty-headingok
- Accessibility roles (ARIA) are used only on elements that support themok
- Images' alternative text doesn't repeat text that's already next to themok
- identical-links-same-purposeok
- table-fake-captionok
- td-has-headerok

Performance section:
- It takes a long time before anything appears on the pageerror
Tested:
- https://www.optimizely.com/

- It takes a long time before the page's main content appearserror
Tested:
- https://www.optimizely.com/

- The page is busy for a long time and responds sluggishly to clickserror
Tested:
- https://www.optimizely.com/

- It takes a long time before the page looks finished loadingerror
Tested:
- https://www.optimizely.com/

- cache-insighterror
Tested:
- https://www.optimizely.com/

- What makes the content jump arounderror
Tested:
- https://www.optimizely.com/

- forced-reflow-insighterror
Tested:
- https://www.optimizely.com/

- The images can be delivered more smartly so they load fastererror
Tested:
- https://www.optimizely.com/

- Old-style program code is sent to modern browserserror
Tested:
- https://www.optimizely.com/

- Files load in a chain that slows the page downerror
Tested:
- https://www.optimizely.com/

- Some files hold things up when the page is about to showerror
Tested:
- https://www.optimizely.com/

- It takes a long time before the page can be usederror
Tested:
- https://www.optimizely.com/

- The program code (JavaScript) can be compressed so the page loads fastererror
Tested:
- https://www.optimizely.com/

- Remove program code (JavaScript) that isn't used so the page loads fastererror
Tested:
- https://www.optimizely.com/

- The program code (JavaScript) takes a long time to runerror
Tested:
- https://www.optimizely.com/

- The browser has to work too hard to build the pageerror
Tested:
- https://www.optimizely.com/

- Content moves suddenly and can make visitors click the wrong thingerror
Tested:
- https://www.optimizely.com/

- Content jumps around while the page loadswarning
Tested:
- https://www.optimizely.com/

- The page may respond slowly to the visitor's first clickwarning
Tested:
- https://www.optimizely.com/

- The design code (CSS) can be compressed so the page loads fasterwarning
Tested:
- https://www.optimizely.com/

- The page loads a very large amount of datawarning
Tested:
- https://www.optimizely.com/

- The page itself is fetched quicklyok
Tested:
- https://www.optimizely.com/

- The page is reasonably complexok
Tested:
- https://www.optimizely.com/

- Program code (JavaScript) isn't loaded twiceok
Tested:
- https://www.optimizely.com/

- Text stays visible while fonts loadok
Tested:
- https://www.optimizely.com/

- lcp-breakdown-insightok
Tested:
- https://www.optimizely.com/

- The browser finds the main image quicklyok
Tested:
- https://www.optimizely.com/

- Code from other sites doesn't affect performance muchok
Tested:
- https://www.optimizely.com/

- The page displays well on mobileok
Tested:
- https://www.optimizely.com/

- The page loads no unused design code (CSS)ok
Tested:
- https://www.optimizely.com/

- user-timingsok
Tested:
- https://www.optimizely.com/

- No tasks lock up the page for longok
Tested:
- https://www.optimizely.com/

- non-composited-animationsok
Tested:
- https://www.optimizely.com/

- Images have a set size so the page doesn't jumpok
Tested:
- https://www.optimizely.com/

- Everything the page fetches from the networkok
Tested:
- https://www.optimizely.com/

- How long data takes to travel back and forth on the networkok
Tested:
- https://www.optimizely.com/

- Delay in the server before it respondsok
Tested:
- https://www.optimizely.com/

- Tasks the browser performs for the pageok
Tested:
- https://www.optimizely.com/

- Technical information about the pageok
Tested:
- https://www.optimizely.com/

- Measurements of the page's performanceok
Tested:
- https://www.optimizely.com/

- Small images of how the page loadsok
Tested:
- https://www.optimizely.com/

- Image of the page once it finished loadingok
Tested:
- https://www.optimizely.com/

- Overview of the page's program codeok
Tested:
- https://www.optimizely.com/

- Summary of what the page fetchesok
Tested:
- https://www.optimizely.com/

- Visitors aren't sent on unnecessarilyok
Tested:
- https://www.optimizely.com/

- The server responds quicklyok
Tested:
- https://www.optimizely.com/

- inp-breakdown-insightok