--- title: "Ketch vs Usercentrics" canonical: "https://cookiebench.com/compare/ketch-vs-usercentrics" last-updated: "2026-10-12" --- # Ketch vs Usercentrics: cookie banner speed and features On desktop, Usercentrics showed its banner sooner, in a median 672 ms against 1.68 s for Ketch. Ketch delayed the main content by 0 ms. Usercentrics added no measurable delay. Both held trackers back in every check. Per vendor docs, only Ketch offers open-source code. We measured both in the same run, in a Next.js app. We measured each against the same page without a consent manager. They also share Script tag, React, Nuxt, Astro, TanStack Start integrations. ## Which is faster on desktop? Desktop profile: 1365 × 768 · No CPU slowdown · 12.5 MB/s, no added latency. | Question | Ketch | Usercentrics | Difference | | --- | --- | --- | --- | | How fast does the banner appear? | 1.68 s | 672 ms | Usercentrics’ banner appeared 1.01 s sooner. | | Does it slow the page down? | 0 ms | No measurable change | Ketch delayed the main content by 0 ms. Usercentrics added no measurable delay. | | How fast does a click respond? | 40 ms | 16 ms | Usercentrics responded 24 ms sooner. Both are under 200 ms, which feels instant. | | Does it block trackers until consent? | 4 of 4 checks passed | 4 of 4 checks passed | Both held trackers back in every check. | | How much does it add to the page? | +532 KB | +164 KB (95% interval: 164 KB) | Usercentrics added 368 KB less to the first load. | ## Which is faster on mobile? Mobile (emulated) profile: 390 × 844, DPR 3 · Mid-tier phone CPU (4× slowdown) · 200 KB/s, 150 ms latency. On emulated mobile, Usercentrics showed its banner sooner, in a median 4.16 s against 7.95 s for Ketch. Usercentrics delayed the main content 900 ms less. Both held trackers back in every check. Per vendor docs, only Ketch offers open-source code. | Question | Ketch | Usercentrics | Difference | | --- | --- | --- | --- | | How fast does the banner appear? | 7.95 s | 4.16 s | Usercentrics’ banner appeared 3.79 s sooner. | | Does it slow the page down? | +1.74 s | +844 ms (95% interval 836 ms to 864 ms) | Usercentrics delayed the main content 900 ms less. | | How fast does a click respond? | 40 ms | Not measured (The click worked, but the browser reported no timing for it. That is not zero, and not proof it took under 16 ms) | No comparison. Usercentrics has no result here, so we call neither one better. | | Does it block trackers until consent? | 4 of 4 checks passed | 4 of 4 checks passed | Both held trackers back in every check. | | How much does it add to the page? | +532 KB | +164 KB (95% interval: 164 KB) | Usercentrics added 368 KB less to the first load. | ## Which features differ? | Feature | Ketch | Usercentrics | | --- | --- | --- | | IAB TCF | Per vendor docs (TCF v2.2) | Per vendor docs (Pro plan and up) | | IAB GPP | Per vendor docs | Per vendor docs (v3 script tag) | | Google Consent Mode v2 | Per vendor docs | Per vendor docs | | Google-certified CMP | Per vendor docs | Per vendor docs | | Global Privacy Control | Per vendor docs | Per vendor docs | | Geo-targeted banners | Per vendor docs | Per vendor docs (Plus plan and up) | | Script blocking | Per vendor docs (Tag orchestration) | Per vendor docs (Paid plans) | | Consent records | Per vendor docs | Per vendor docs (Kept 12 months) | | Cookie scanning | Per vendor docs | Per vendor docs | | Open source | Partial (SDKs and samples only) | Not supported (Commercial licence) | | Self-hostable | Not supported (Hosted service) | Not supported (Hosted backend) | | Headless UI | Per vendor docs | Per vendor docs | | TypeScript types | Per vendor docs | Per vendor docs | | Free tier | Per vendor docs (5,000 users) | Per vendor docs (1,000 sessions a month) | | Script tag | Per vendor docs | Per vendor docs | | React SDK | Not supported (Script tag only) | Not supported (Script tag only) | | Next.js SDK | Not supported (Script tag only) | Not supported (Script tag only) | | Vue SDK | Not supported (Script tag only) | Not supported (Script tag only) | | Nuxt SDK | Not supported (Script tag only) | Not supported (Script tag only) | | Svelte SDK | Not supported (Script tag only) | Not supported (Script tag only) | | SvelteKit SDK | Not supported (Script tag only) | Not supported (Script tag only) | | Astro SDK | Not supported (Script tag only) | Not supported (Script tag only) | | TanStack Start SDK | Not supported (Script tag only) | Not supported (Script tag only) | ## Which should you choose? ### Choose Ketch if - You want open-source code ### Choose Usercentrics if - A fast banner matters to you: Usercentrics’ banner appeared 1.01 s sooner - Page load time matters to you: Ketch delayed the main content by 0 ms. Usercentrics added no measurable delay - Page weight matters to you: Usercentrics added 368 KB less to the first load ## Questions about this pair ### Is Ketch slower than Usercentrics? On the desktop profile, Usercentrics’ banner appeared in a median 672 ms and Ketch’s in 1.68 s. Ketch delayed the main content by 0 ms. Usercentrics added no measurable delay. ### Do Ketch and Usercentrics both support IAB TCF? Both document it. Statuses come from vendor docs. ### Do Ketch and Usercentrics block trackers before consent? Both held trackers back in every check. Each check loads the page. Then it looks for trackers that ran, cookies that the page set or data that left the page before the visitor chose. ## Related comparisons - [c15t vs Usercentrics](https://cookiebench.com/compare/c15t-vs-usercentrics.md) - [c15t vs Ketch](https://cookiebench.com/compare/c15t-vs-ketch.md) - [OneTrust vs Usercentrics](https://cookiebench.com/compare/onetrust-vs-usercentrics.md) - [Didomi vs Usercentrics](https://cookiebench.com/compare/didomi-vs-usercentrics.md) - [Ketch vs OneTrust](https://cookiebench.com/compare/ketch-vs-onetrust.md) - [c15t vs OneTrust](https://cookiebench.com/compare/c15t-vs-onetrust.md) Run `matrix-2026-10-12`, published 2026-10-12. Methodology [cookiebench-v3.2.4](https://cookiebench.com/methodology). inth, the team behind c15t, maintains CookieBench. c15t is one of the consent managers we measure ([disclosure](https://cookiebench.com/methodology)). Feature support comes from vendor documentation unless a row says "Verified by test".