{"id":665,"slug":"redbus-inp-7pct-sales-2023","title":"redBus (2023): INP improved ~72% on search page → +7% sales (6-7.2% CR uplift across operating countries)","kind":"reference","scope":"business","status":"current","audiences":["kevin","smb-owner","candid-team"],"topics":["core-web-vitals","inp-optimization","conversion-rate"],"reference_body":"**Claim:** redBus (India) optimized the date-change interaction on the search page, improving INP by ~72%. Outcome: **+7% sales**, with 6-7.2% CR uplift in operating countries.\n\n**Source:** web.dev/case-studies/redbus-inp (2023).\n\n**Methodology:** RUM before/after on the key flow; not a true A/B but performance was the isolated change.\n\n**Confidence:** Mostly yes — high attribution because the affected flow and code change are documented.\n\n**Why this matters for Candid:** redBus is the cleanest published INP-specific lift number. Use when arguing for INP investment specifically, not generic \"speed.\"","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"inp-replaced-fid-march-2024","title":"INP officially replaced FID as a Core Web Vital on March 12, 2024","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"inp-killers-catalogue","title":"Reference: the 8 most common INP killers — ranked by observed frequency","kind":"reference","scope":"business","link_type":"relates-to"}],"incoming":[{"slug":"research-brief-performance-revenue-evidence","title":"Research brief: Website Performance & Revenue — defensible evidence for KW small-business owners (piece 17)","kind":"reference","scope":"business","link_type":"depends-on"},{"slug":"contentsquare-inp-2023-25pct-conversion-gap","title":"Contentsquare 2023 (n=997 customer sites): Good INP retail users converted 2.5% vs 2.0% for Poor (25% relative lift); +45% on desktop","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T21:24:18.348Z","updated_at":"2026-05-22T21:24:18.348Z"}