Every Second Your Site Is Slow, You're Losing Money

G Google

Found that as page load time goes from 1s to 5s, the probability of mobile bounce increases 90%; from 1s to 10s, 123%.

A Amazon

Sees a 1% decrease in revenue for every 100ms increase in load time.

W Walmart

Saw up to a 2% increase in conversions for every 1 second of improvement in load time. Every 100ms improvement also resulted in up to a 1% increase in revenue.

E eBay

Found every 100ms of load-time improvement increased "Add to Cart" count by 0.5%.

N Netflix

Saw a 43% decrease in their bandwidth bill after turning on GZip.

Y YouTube

When YouTube introduced a version of their pages that was 90% lighter, they saw a large increase in traffic in areas with poor connectivity such as Southeast Asia, South America, Africa and Siberia.

I Instagram

Increased impressions and user profile scroll interactions by decreasing the response size of the JSON needed for displaying comments (by 33% for the median and 50% for the 95th percentile for the main endpoint).

P Pinterest

Rebuilding Pinterest pages for performance resulted in a 40% decrease in wait time, a 15% increase in SEO traffic and a 15% increase in conversion rate to signup.

T Twitter

Lite saw a 65% increase in pages per session, 75% in Tweets, and a 20% decrease in bounce rate. Twitter Lite loads in under 3 seconds for repeat visits even on slow networks.

A Adobe

Improved from 7.2 seconds to 3.4 seconds and engaged visit rate increased by 35%, bounce rates decreased by 6%, and the average time spent on page increased by 21% for mobile visitors.

W Wix

Recorded a 250% year-on-year increase in mobile origins passing all Core Web Vitals.

A Alibaba

Increased conversions on the mobile web by 76%, with 14% more monthly active users on iOS and 30% more on Android.

A AliExpress

Reduced load time by 36% and saw a 10.5% increase in orders and a 27% increase in conversion for new customers.

B BBC

Has seen that they lose an additional 10% of users for every additional second it takes for their site to load.

F Financial Times

Tests of the new, faster FT.com showed users were up to 30% more engaged—meaning more visits and more content being consumed.

Y Yahoo!

Increased traffic by 9% for each 400ms of improvement in load time.

Y Yahoo! Japan

News reduced CLS by .2, decreasing the number of URLS with poor performance in search console by 98%. As a result, they saw a 15.1% increase in page views per session, 13.3% longer session durations and a 1.72 percentage point decrease in bounce rate.

B Bing

One second delay in Bing results in a 2.8% drop in revenue. Two second delay results in 4.3% drop.

V Vodafone

Improved their LCP by 31%, resulting in an 8% increase in sales, a 15% increase in their lead to visit rate, and an 11% increase in their cart to visit rate.

T T-Mobile

Used a data-driven performance approach to achieve a 60% improvement in visit-to-order rate.

R Ray-Ban

Doubled conversion rate and reduced exit rate by 13% via prerendering with the Speculation Rules API.

F Farfetch

Found conversion rate rose 2.8% for every 1-second reduction in Time to Interactive.

F Flipkart

Saw a 2.6% reduction in bounce rate after optimizing Core Web Vitals.

N Nykaa

Improved LCP by 40% and saw 28% more organic traffic from tier-2/3 cities.

Z Zalando

Saw a 0.7% increase in revenue when they shaved 100ms off their load time.

T Tokopedia

Improved LCP by 55% and saw a 23% increase in average session duration.

T Trivago

Saw a 8% increase in click-outs (bookings) after reducing page load time.

S Staples

Reduced median homepage load time by 1 second and reduced load time for the 98th percentile by 6 seconds. As a result, they saw a 10% increase in their conversion rate.

G GQ

Cut load time by 80% and saw an 80% increase in traffic. Median time spent on the site also increased by 32%.

I Intuit

While reducing page load from 15 seconds to 2 seconds, Intuit saw a 3% improvement in conversions for every second reduced over 7 seconds, and a 2% improvement in conversions for every second reduced over 5 seconds.

M Mozilla

Cut load time by 2.2 seconds and saw download conversions increase by 15.4%.

E Etsy

Saw a 12% increase in bounce rate when they added 160KB of images to their mobile page.

L Lancôme

Since launching their PWA, Lancôme's mobile sales have increased 16% year over year with overall speed increases of 50%.

F Forbes

The Forbes Progressive Web App's homepage completely loads in just 0.8 seconds.

U Uber

PWA was designed to be fast even on 2G. The core app is only 50k gzipped and takes less than 3 seconds to load on 2G networks.

T Tinder

Cut load times from 11.91 seconds to 4.69 seconds with their new PWA. The PWA is 90% smaller than Tinder's native Android app. User engagement is up across the board on the PWA.

G Groupe Renault

Found a strong correlation between Largest Contentful Paint and both their bounce rate and conversion rate, with a 1 second improvement leading to up to a 14 percentage point decrease in bounce rate, and 13% increase in conversions.

P Pfizer

Implemented a performance budget and cut bounce rate by 20% alongside 38% faster loads.

A Akamai

Found a 100-millisecond delay in load time can decrease conversion rates by 7%.

A Aberdeen

The Aberdeen Group discovered a 1-second delay resulted in 11% fewer page views, a 16% decrease in customer satisfaction, and 7% loss in conversions.

S Shopzilla

Decreased load time by 5 seconds and saw a 12% increase in conversion rate, a 25% increase in page views and a 50% reduction in infrastructure required.

H Housing.com

Increased conversions by 38% and lowered bounce rate over 40% with a new PWA.

C Carnival Cruise Line

Improved conversions from push notifications, achieving a 24% opt-in rate and 42% open rate.

B BookMyShow

Witnessed over 80% increase in conversion and a dramatic increase in revenue after launching its PWA.

J Jumia

Saw 9× more conversion on previously abandoned shopping carts from web push users, with conversion rates for cart abandonments on mobile web now outpacing that of their native app.

O OLX

Experienced 250% more re-engagement using push notifications and 146% higher click-through rate on ads. The PWA takes 23% less time to interactive resulting in 80% lower bounce rates.

K Konga

Used 92% less data for the initial load of their PWA compared to their native app and 82% less data to complete a user's first transaction.

N NDTV

NDTV, one of India's leading news stations and websites, improved LCP by 55% and saw a 50% reduction in bounce rate.

C Cdiscount

Improved all three Core Web Vitals and saw a 6% revenue uplift during its Black Friday sale.

L Lazada

Improved LCP 3× and saw a 16.9% increase in mobile conversion rate.

S Swappie

Reduced load time by 23%, LCP by 55%, CLS by 91% and FID by 90% and saw a 42% increase in mobile revenue and a 10 percentage point increase in relative mobile conversion rate.

C Contentsquare

Aggregated data from 997 customer sites for the three months starting May 1st of 2023. They found that users who experienced good INP had a 25% better conversion rate than users experiencing poor INP, and users experiencing poor INP were more likely to bounce or express frustration via rage clicks or multiple interactions than users experiencing good INP.

Y Yelp

Reduced First Contentful Paint (75th percentile) by 45% and Yelp Page Complete (75th percentile) by 25% and saw a 15% improvement in their conversion rate.

T The Economic Times

Improved CLS from 0.25 to 0.9 and reduced values in the \"Poor\" range by 65%, and also improved LCP from 4.5 seconds to 2.5 seconds and reduced values in the \"Poor\" range by 33%. This reduced bounce rates by 43%.

R redBus

RedBus, a bus booking and ticketing website based in India, undertook a substantial effort to improve their website's INP by 72%. As a result of their efforts, they were able to increase sales by 7%.

Q QuintoAndar

Reduced LCP by 26% and FID by 72% and saw a 46% reduction in bounce rate, and 87% increase in pages per session, and a 5% improvement in conversion.

A Agrofy

After making improvements to multiple performance metrics (including LCP, CLS and Long Task time), Agrofy saw a 76% reduction in their abandonment rate and a significant boost in engagement.

M Missguided

Fashion retailer Missguided removed BazaarVoice for Android visitors. Median page load time improved by 4 seconds, and revenue increased by 26%.

A ALDO

Found that on their single-page app, mobile users who experienced fast rendering times brought 75% more revenue than average, and 327% more revenue that those experiencing slow rending times. on desktop, users with fast-rendering times brought in 212% more revenue than average and 572% more than slow.

C Carousell

Reduced page load time by 65% and saw a 63% increase in organic traffic, a 3x increase in advertising click-thru rate and a 46% increase in first-time chatters.

5 5miles

Decreased their bounce rate by 50% and increased conversions by 30%.

A Ameba Manga

Improved CLS 10× and saw comics read increase by 2–3×.

A Ancestry.com

Ancestory.com saw a 7% increase in conversions after improving render time by 68%, page weight by 46% and load time by 64%.

A AOL

A presentation from AOL revealed that visitors in the top 10% of site speed viewed 50% more pages than visitors in the bottom 10%.

A AutoAnything

Reduced page load time by 50% and saw an 12-13% increase in sales.

B Best Western River North Hotel

The Best Western River North Hotel sees 300% increase in revenue with new Progressive Web App.

B Butcher of Blue

Of Blue's PWA increased mobile users by 154%, monthly active users by 154%, and conversion by 169%. Pages load 85% faster.

C Carpe

Improved Largest Contentful Paint by 52% and Cumulative Layout Shift by 41% and saw a 10% increase in traffic, a 5% increase in online store conversion rate, and a 15% increase in revenue.

C Commonfloor

Groups saw 2× increase in daily active users and a 10% increase in overall traffic by moving to a PWA with app shell.

C COOK

Increased conversion rate by 7% after cutting average page load time by 0.85 seconds. Bounce rate also fell by 7% and pages per session increased by 10%.

D Debenhams

Found that the user journey from browsing to purchase was 2× to 4× on its PWA. The PWA delivered a 40% increase in mobile revenue and a 20% increase in conversion.

D Devialet

Saw a 2× increase in conversions and a 25% increase in organic traffic after launching a new PWA experience.

D Driver Solutions

Web studio Sparkbox more than doubled Driver Solutions’ conversion rate for organic traffic, moving it from 2.69% to 5.57% after deploying performance updates and AMP pages.

E Edmunds

Decreased load time by 77% and saw a 20% increase in page views, 4% reduction in bounce rate and 3% reduction in ad impression variance.

E Ele.me

Ele.me, the biggest food ordering and delivery company in mainland China, decreased load times by 11.6% on pre-cached pages and by 6.35% on all pages.

E Etam

Reduces it's average page load time from 1.2s to 500ms and increased conversions by 20%, time on site by 21%, and pages viewed per visit by 28%.

E eXtra Electronics

Saw 4× increase in re-engagement and 100% more sales from users arriving via web push.

F Furnspace

Reduced their image payload by 86% resulting in a reduction in load time of 65%. This improved user experience helped double Furnspace’s eCommerce purchase conversion ratio, cut bounce rates by 20%, increase mobile revenue by 7% and dramatically improve SEO.

G Garbarino

By building a PWA, Garbarino increased their conversion rate by 27%, returning visitors by 13%, pageviews by 35% and decreased their bounce rate by 9%.

G GEDI

Reduced CLS by 77% and cut bounce rate by 8%.

G George

UK clothing brand George saw a 31% increase in conversion, 2× lower bounce rate, and 20% increase in page views after upgrading to a PWA. The PWA was 3.8× faster than the previous site.

G Glasses Direct

Found that for every second they added to the load time, there was a 6.7% decrease in conversions. In addition, load time for users who did not convert was 3-4 times as high as for converting customers.

G Google I/O

Users of Google I/O's PWA spent more time in the app than their Android counterparts, with homescreen saves up 900% over the previous year and half of signed-in users enabling notifications.

G Grand Velas Riviera Maya

Resort increased its Black Friday conversion rate by 53% due to its progressive web app's speed and notifications.

G GYAO

Improved LCP by 3.1× and saw a 108% improvement in click-through rate.

I iCook

Improved CLS by 15% and saw a 10% increase in ad revenue as a result.

I Infobae

PWA beta has 230% longer session and 3× more page views than the previous mobile site.

I Ingram Micro

Focused on reducing Total Blocking Time and saw a 35% increase in organic traffic by improving their homepage TBT by 40%.

J Jumia Travel

Travel's PWA has 12× more users compared to its native apps and uses 80% less data. Since launch, the PWA has 33% higher conversion and 50% lower bounce rate.

K Kaporal

New PWA experience resulted in 60% fewer bounces, 15% more conversions on desktop, 8% more conversions on mobile, and a 40% increase in length of visit.

K Kubota

Launched their e-commerce PWA which resulted in a 192% growth of daily visitors and 26% growth of average monthly visits.

L Lyft

Users on older devices take 11% more rides in Lyft's PWA than native users and click “Install PWA” 40% more often than “Download App.”.

M MakeMyTrip.com

MakeMyTrip's PWA saw a 3× increase in conversion and 160% increase in shopper sessions. Pages are 38% faster. First-time shoppers are 3× more likely to convert on the PWA than in native app.

M Mobify

For every 100ms decrease in homepage load speed, Mobify's customer base saw a 1.11% lift in session based conversion, amounting to an average annual revenue increase of $376,789. Similarly, for every 100ms decrease in checkout page load speed, Mobify's customers saw a 1.55% life in session based conversion, amounting to an average annual revenue increase of $526,147.

M Monrif

Improved engagement by 8.9% and reduced LCP by 17.9% using prerender and bfcache.

M Mynet

Increased revenue 25% per pageview using a PWA and AMP solution. The average page is 4× faster and people spend 43% longer on the site. Even iOS saw a 15% increase average pageviews and a 23% decrease in bounce rate.

N Netzwelt

Saw an 18% increase in ad revenue after improving Core Web Vitals.

N NIKKEI STYLE

Improved LCP by 18% and saw 9% more pageviews per session.

N Nuvemshop

Improved LCP by 68% with image prioritization and saw 8.9% more conversions.

O Obama for America

The Obama for America site improved performance by 60% and saw a corresponding increase in conversions of 14%.