B Evidence Grade B Graded under review Safe to Cite Dated

20%

20% -- bounce rate increase for websites (5-second page load delay) (2019)

Name: Bounce Rate Increase Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-17

2019 · Section.io

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Attribution: Section.io View source

Lighthouse Research Team

Last verified: 2026-09-17 · How we verify data →

Source verified Evidence graded

Value

20%

Unit

Percentage

Data Vintage

2019

Entity

websites (5-second page load delay)

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Section.io Primary Tier C

https://www.experienceunbound.com/blog/improve-your-website-user-experience ↗

Confidence: 22/100 Vintage: 2019 Channel: Deep Crawl

Source Article

Bridgeline

Improve Your Website’s User Experience with These Tips Improve Your Website’s User Experience with These Tips As we all know, your company’s website is the billboard for your brand - and often the first shot you have at making a good impression on prospective customers. That is why it is vital to de…

Original Research

Section.io · Original study ↗

Methodology

Secondary citation of Section.io research: five extra seconds of page load time can increase website bounce rate by over 20%. Source article is undated; vintage estimated from blog publication period.

Methodology documented

Segmentation

Industrymarketing RoleAll marketers Channelmulti-channel

Cite this stat

Plain Text

websites (5-second page load delay): 20% bounce rate increase. Source: Section.io (2019). Via Lighthouse Intelligence -- https://lighthousedata.io/data/page-load-time-bounce-rate-increase

HTML Embed

<blockquote cite="https://lighthousedata.io/data/page-load-time-bounce-rate-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20%</strong> -- bounce rate increase for websites (5-second page load delay)<br><small>Source: Section.io (2019) · <a href="https://lighthousedata.io/data/page-load-time-bounce-rate-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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