Henri Helvetica
where else to find them
what they talk about
all 13 in the filters
where they keep going back
- React Miami2 editions2023–2025
all 17 in the filters
on a stage with
never shared a talk
who talks about the same things
- Christian Heilmann58 talks
- Ben Schwarz10 talks
- Stefan Judis23 talks
- Bruce Lawson30 talks
- Tim Kadlec12 talks
- Vitaly Friedman43 talks
| title | conference | date |
|---|---|---|
| DevTools & The Performance Tab | React Miami 2025 | 2025-04-17 |
Chrome DevTools’ Performance panel now surfaces lab and 28‑day field metrics side‑by‑side (examples: ESPN, Inter Miami), pulls CRUX field data to compare real… | ||
| Anatomy of a Modern Page Load | CascadiaJS 2024 | 2024-06-19 |
Audit of a Next.js WNBA site uses WebPageTest and RUM to compare lab versus field: lab TTFB ~886 ms while RUM shows different distributions, LCP lab ~3.5 s vs… | ||
| Slashing Performance Bottlenecks and Poor User Experience | React Brussels 2023 | 2023-10-13 |
Data from HTTP Archive, CrUX and the RUM archive shows only 43% of sites meet Core Web Vitals; React sites ship a median ~12,200 KB of JavaScript versus ~558… | ||
| DEADScript: The Role Of JavaScript In Web Sustainability | JSNation 2023 | 2023-06-01 |
This talk discusses digital sustainability and the role of JavaScript in web sustainability. It highlights the impact of electricity carbon intensity and page… | ||
| R is for React Performance | React Miami 2023 | 2023-04-20 |
Walks through concrete levers and outcomes: uses WebPageTest and browser APIs to show images drive LCP failures (only 55% good LCP, two and a half seconds… | ||
| 2022 State Of JS: A Performance Profile | TheJam.dev 2023 | 2023-01-25 |
Surveying State of JS data with WebPageTest and the HTTP Archive and CrUX, the web ships a median of 461 KB median JS with p75 at 857 KB and p90 near 1 MB… | ||
| In a New York Minute | SmashingConf New York 2022 | 2022-10-10 |
Median pages ship 561 KB of JavaScript with about 35% unused (p75 ≈ 857 KB; p90 unused ≈ 45%), and third‑party JS is ~63% of JS (median 292 KB) with 12%… | ||
| FAULT TEXT: The Adversities in Automated Alternative Text with Henri Helvetica | REFACTR.TECH 2021 | 2021-08-18 |
Web images number 3.2 billion uploads a day while 2.2 billion people have visual impairments, yet automated alt text fails: ImageNet scraped 15 million photos… | ||
| VueConf US 2021 | Looking through the VueFinder Henri Helvetica | Vueconf.US 2021 | 2021-04-14 |
Data show image bytes per page rising — desktop +50%, mobile +82% — while requests fall (~‑20% desktop, ~‑15% mobile), and 51% of Vue origins serve ≥1MB of… | ||
| The Metric System: Making Correct Performance Measurements | You Gotta Love Frontend 2020 | 2020-08-27 |
Slides trace FireBug back to two simple measurements — pre- and post-load — then maps concrete modern metrics (FCP, FMP, TTFB, Speed Index, LCP, CLS, FID, TTI… | ||
| Moving Pictures | SmashingConf Live 2020 | 2020-08-20 |
A rapid survey of formats and tradeoffs: shows images on pages average about 1 MB on mobile while 17 shared pictures totaled 64 MB (3.75 MB each), and Netflix… | ||
| A Decade of Disciplined Delivery | performance.now() 2019 | 2019-11-21 |
Retrospective testing of Steve Souders’ 14 rules names concrete claims, tools and outcomes: YSlow and Lighthouse audits show a median of about 69 requests on… | ||
| Shape Of The Web | JSCamp Barcelona 2019 | 2019-07-18 |
Covers concrete history and a practical argument for inclusion: traces modem-to-Netscape days, cites 4.4 billion users and mobile-driven growth, reveals the… | ||
| Shape Of The Web | JSConf EU 2019 | 2019-06-01 |
A brisk history and set of calls to action: the web shifts when images join text and a browser scales to 4.3 billion users, mobile drives that surge, and… | ||
| Planet of the APIs: A Tale of Performance and UX | UX Burlington 2019 | 2019-05-10 |
Mobile usage passes desktop since November 2016 and 53% of visitors abandon pages that take 3+ seconds, so the talk demonstrates specific browser APIs and… | ||
| The Performance Alphabet | VueConf TO 2018 | 2018-11-14 |
A rapid checklist of actionable items and real numbers: remove EXIF (images carry ~16% metadata), keep payloads tiny (examples show a page delivering 45 MB on… | ||
| The Shape of the Web | DeltaV Conference 2018 | 2018-05-10 |
Mosaic becomes the pivot point with 65 million new users in 18 months and the web grows to about four billion people while browsing moves to low‑end phones and… | ||
| “Performance by Design” | Clarity 2017 | 2017-11-28 |
Argues that design choices materially change load and interaction metrics and gives concrete numbers and tools: a DoubleClick figure of 19s average mobile… | ||
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