Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.Detailed Report
Audit breakdown by category with detailed findings.
Performance
Insights
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
Performance issues directly impact user engagement and conversion rates.
Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling
Performance issues directly impact user engagement and conversion rates.
3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.
Performance issues directly impact user engagement and conversion rates.
Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.
Performance issues directly impact user engagement and conversion rates.
A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.
Performance issues directly impact user engagement and conversion rates.
Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
HEADER_M_colissimo_part_290224.jpg div.hero > div.hero__banner > picture.hero__image > img.lp-picture__full-width | /ecom/occ/smartedit/medias/sys_master/cms/h07/hee/2700925... | 200.3 KiB | 168.1 KiB |
Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
Performance issues directly impact user engagement and conversion rates.
Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| www.laposte.fr/ruxitagentjs_ICA7NVfhqrux_10333260303165926.js | 81.6 KiB | 452 ms |
| www.laposte.fr/ecom/_nuxt/css/35fd672.css | 47.7 KiB | 151 ms |
| www.laposte.fr/ecom/_nuxt/css/20dcb8a.css | 81.6 KiB | 452 ms |
| www.laposte.fr/ecom/_nuxt/css/0b3682a.css | 544 B | |
| www.laposte.fr/ecom/_nuxt/css/f3af2ce.css | 2.4 KiB | |
| www.laposte.fr/ecom/_nuxt/css/86e357d.css | 2.6 KiB | |
| www.laposte.fr/ecom/_nuxt/css/f3bbfb3.css | 4.4 KiB | 151 ms |
| www.laposte.fr/ecom/_nuxt/css/da75bd6.css | 10.4 KiB |
A long cache lifetime can speed up repeat visits to your page. Learn more about caching.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| try.abtasty.com/5714a31785e8fb2356ca3d1bd25e4a43/recos.95ab0575a0df949e0f20.js | 30.0 s | 11.2 KiB |
| try.abtasty.com/5714a31785e8fb2356ca3d1bd25e4a43.js | 21600.0 s | 2.4 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| www.colissimo.fr/ | 829 ms |
| laposte.fr/colissimo | 850 ms |
| www.laposte.fr/colissimo | 0.0 ms |
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
Performance issues directly impact user engagement and conversion rates.
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.
Performance issues directly impact user engagement and conversion rates.
Diagnostics
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.laposte.fr/ecom/_nuxt/css/20dcb8a.css | 81.3 KiB | 78.9 KiB |
| www.laposte.fr/ecom/_nuxt/css/35fd672.css | 47.4 KiB | 46.1 KiB |
| www.laposte.fr/ecom/_nuxt/css/da75bd6.css | 10.1 KiB | 10.1 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.laposte.fr/ecom/_nuxt/e1f0dc9.modern.js | 553.1 KiB | 447.2 KiB |
| www.laposte.fr/ecom/_nuxt/ace3671.modern.js | 192.1 KiB | 146.9 KiB |
| www.laposte.fr/ecom/_nuxt/9aeea0a.modern.js | 127.2 KiB | 127.1 KiB |
| www.laposte.fr/ecom/_nuxt/c0a16e9.modern.js | 163.8 KiB | 86.4 KiB |
| www.laposte.fr/ecom/_nuxt/ca3c383.modern.js | 74.8 KiB | 56.4 KiB |
| cdn.tagcommander.com/1491/tc_LaboutiqueLaPoste_21.js | 80.0 KiB | 46.1 KiB |
| try.abtasty.com/5714a31785e8fb2356ca3d1bd25e4a43/main.1e0116ad91cee0a97856.js | 104.6 KiB | 40.3 KiB |
| www.laposte.fr/ecom/_nuxt/5130bf2.modern.js | 89.7 KiB | 37.6 KiB |
| www.laposte.fr/ecom/_nuxt/678a774.modern.js | 47.7 KiB | 36.0 KiB |
| www.laposte.fr/ecom/_nuxt/dc72e0b.modern.js | 48.8 KiB | 35.0 KiB |
| www.laposte.fr/ruxitagentjs_ICA7NVfhqrux_10333260303165926.js | 81.3 KiB | 29.1 KiB |
| www.laposte.fr/ecom/_nuxt/ebc0c65.modern.js | 46.4 KiB | 27.7 KiB |
| www.laposte.fr/ecom/_nuxt/1163fe9.modern.js | 51.4 KiB | 25.7 KiB |
| www.laposte.fr/ecom/_nuxt/2593fae.modern.js | 28.5 KiB | 23.9 KiB |
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.
Performance issues directly impact user engagement and conversion rates.
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 3.4 s |
| Other | 1.3 s |
| Style & Layout | 812 ms |
| Script Parsing & Compilation | 297 ms |
| Parse HTML & CSS | 278 ms |
| Rendering | 169 ms |
| Garbage Collection | 99 ms |
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| Pages with cache-control:no-store header cannot enter back/forward cache. | Actionable |
| Pages whose main resource has cache-control:no-store cannot enter back/forward cache. | Not actionable |
| Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header. | Not actionable |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
solutions d'envoi Colissimo adaptées div.row > div.row__left > picture > img.lazyload | |
déposez votre colis div.row > div.row__right > picture > img.lazyload | |
envoyer colis dans DOM ou international div.row > div.row__left > picture > img.lazyload | |
démarche RSE dans les transports div.row > div.row__right > picture > img.lazyload | |
expérience de livraison optimisée div.row > div.row__left > picture > img.lazyload | |
Fabriqué en France div.productCard__medias > div.productCard__icons > div.productStickers > img | www.laposte.fr/ecom/_nuxt/img/madeInFrance.ca522eb.svg |
Fabriqué en France div.productCard__medias > div.productCard__icons > div.productStickers > img | www.laposte.fr/ecom/_nuxt/img/madeInFrance.ca522eb.svg |
Fabriqué en France div.productCard__medias > div.productCard__icons > div.productStickers > img | www.laposte.fr/ecom/_nuxt/img/madeInFrance.ca522eb.svg |
More information about the performance of your application. These numbers don't directly affect the Performance score.
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
ARIA
Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Enveloppebulle
Lot de 5 cartons adaptables varia x-pack 3 format 305x235x105 mm… div.productCarousel > div.carousel > div.carousel__wrapper > div.carousel__container |
Enveloppebulle
Lot de 10 planches a4 avec étiquette colissimo intégrée 164 x 12… div.productCarousel > div.carousel > div.carousel__wrapper > div.carousel__container |
ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Retour à l'accueil - La Poste header.header > div.header__base > div.headerFull__logo > picture.logo |
When an element doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn how to make command elements more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
header.header > div.header__base > div.headerFull__actions > span.headerFull__button header.header > div.header__base > div.headerFull__actions > span.headerFull__button |
header.header > div.header__base > div.headerFull__actions > span#header-cart-button header.header > div.header__base > div.headerFull__actions > span#header-cart-button |
Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Retour en haut div.row > div.footer__bottom-content > div.footer__bottom-lower > i.back |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Names and labels
When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Close consent banner body > div#tc-privacy-wrapper > div#popin_tc_privacy > button#popin_tc_privacy_btn_close |
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#popin_tc_privacy_container_text > div#popin_tc_privacy_text > div#tc_test > img#tc_banner_logo div#popin_tc_privacy_container_text > div#popin_tc_privacy_text > div#tc_test > img#tc_banner_logo |
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
header.header > div.header__base > div.headerFull__actions > a#header-help-part header.header > div.header__base > div.headerFull__actions > a#header-help-part |
Lot de 5 cartons adaptables varia x-pack 3 format 305x235x105 mm article#productCard-mp-500025506 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 25 Boîtes postales brunes 150x150x60 mm article#productCard-mp-500027220 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Carton d'emballage 20 x 15 x 11 cm article#productCard-mp-500079535 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 5 cartons d'emballage 31 x 21 x 7,5 cm article#productCard-mp-500079541 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 10 Boîtes Pochettes Carton XS - hauteur 3cm - format 140x225 mm article#productCard-mp-500026244 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 10 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500117208 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 50 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500117149 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 250 planches d’étiquette colissimo 150 x 100 mm article#productCard-mp-600039944 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 500 planches a4 de 2 étiquettes compatibles colissimo à bords vifs 210 x… article#productCard-mp-500574875 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 500 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500025260 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 100 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500117185 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 250 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500127635 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 1000 planches d’étiquette colissimo 150 x 100 mm article#productCard-mp-600039945 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 3000 feuilles A4 avec étiquette autocollante Colissimo intégrée 150 x 10… article#productCard-mp-500545383 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Lot de 1000 planches a4 avec étiquette colissimo intégrée 164 x 120 mm article#productCard-mp-500025255 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
Étiquette d’expédition spéciale e-commerce avery colissimo article#productCard-mp-500042842 > section.lp-card__medias > div.productCard__medias > a.productCard__imageWrapper |
div.component > div.row > div.app > a.app__link div.component > div.row > div.app > a.app__link |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Personnaliser div#tc-privacy-wrapper > div#popin_tc_privacy > div#popin_tc_privacy_container_button > button#popin_tc_privacy_button |
Ne pas accepter et fermer div#tc-privacy-wrapper > div#popin_tc_privacy > div#popin_tc_privacy_container_button > button#popin_tc_privacy_button_2 |
Accepter et fermer div#tc-privacy-wrapper > div#popin_tc_privacy > div#popin_tc_privacy_container_button > button#popin_tc_privacy_button_3 |
Best Practices
General
Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit
Performance issues directly impact user engagement and conversion rates.
| Description |
|---|
A bad HTTP response code (403) was received when fetching the script. |
Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.
Performance issues directly impact user engagement and conversion rates.
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.
Content Best Practices
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#popin_tc_privacy_container_text > div#popin_tc_privacy_text > div#tc_test > img#tc_banner_logo div#popin_tc_privacy_container_text > div#popin_tc_privacy_text > div#tc_test > img#tc_banner_logo |
Format your HTML in a way that enables crawlers to better understand your app’s content.