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Calibre

Company blog · calibreapp.com/blogwebprogramming

Calibre is the company blog at calibreapp.com, writing about web and programming. Since 2014, 17 different Hacker News readers have linked it 28 times, most often “Calibre beta announced”. It is still writing: the last post was on 2026-09-28, and you can follow it by feed.

Visit the blog
28mentions?
17HN people?
2014–2026first – last linked?
Links on Hacker News per year · peak 10 in 2021

Too few sampled comments (4) to say how often HN recommends it.?

Why HN links it

HN readers link Calibre's posts on web performance, such as Time to Interactive and the complexity of server-side rendering. The comments mostly cite the product itself or ask about it, not the writing.

Summarised by Claude from a sample of 4 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

Calibre combines real user monitoring, Google CrUX data, and synthetic page speed tests so your team always knows where performance stands and what to fix.

Most-linked posts?

  1. Calibre beta announced
    4 people · 4 mentions · first linked 2014-04-03
  2. How to Improve CSS Performance
    3 people · 3 mentions · first linked 2021-03-31
  3. Next.js Performance: Making a Fast Framework Even Faster
    2 people · 2 mentions · first linked 2021-12-02
  4. Small Bundles, Fast Pages: What to do when there's too much JavaScript
    2 people · 2 mentions · first linked 2021-09-16

What Hacker News says?

  1. chrisco255 · 2022-04-20
    > * physically closer > How can this be guaranteed? You have no control over the closest Edge function vs Cloud Server to the user. Because the user doesn't get to talk directly to the database. The database could be on the second floor of the user's building, but it's still going to have to get routed via an API. If you're using serverless functions for your API (presumably so, given this conversation), you still h…

    Comment linking /blog/nextjs-performance

    on “The absurd complexity of server-side rendering”
  2. benschwarz · 2019-07-03

    Submitted How Google Pagespeed works as a story · 179 points

    HN discussion
  3. neon_electro · 2019-11-08
    Time to Interactive: https://calibreapp.com/blog/time-to-interactive

    Comment linking /blog/time-to-interactive

    on “How Discord achieves native iOS performance with React Native”
  4. benschwarz · 2017-03-23

    Submitted Show HN: Calibre Test Profiles – Test your sites under real world conditions as a story · 57 points

    HN discussion
  5. benschwarz · 2022-10-11
    We used this to generate dynamic share cards for our core web vitals checker tool (plug: https://calibreapp.com/tools/core-web-vitals-checker ). Previously new uncached requests for Open graph share-card images were generated in Chrome, sometimes taking up to 5 seconds to generate. (They were then stored in cache for 12 hrs). Because we're now using Satori powered og images, they render almost immediately and we don…

    Comment linking /tools/core-web-vitals-checker

    on “Show HN: Satori – Convert HTML and CSS to SVG”
  6. brettgoulder · 2014-04-03

    Submitted Calibre beta announced as a story · 38 points

    HN discussion
  7. bradknowles · 2019-07-03
    So, I'm curious. How does https://calibreapp.com/ compare to https://www.webpagetest.org/ and https://www.sitespeed.io/ and https://gtmetrix.com/ ? Why would someone want to pay you for your service, as opposed to using any of the above? Do you support browsers other than Chrome? Do you support a wide variety of simulated hardware? Do you support a wide variety of testing locations? Do you support any page speed tes…

    Comment linking /

    on “How Google Pagespeed works”
  8. benschwarz · 2026-09-15

    Submitted 95% of airline websites fail Core Web Vitals as a story · 3 points

    HN discussion
  9. benschwarz · 2019-07-03
    Hi! Author of the post here. Lighthouse definitely has some improvements to make for the audit suggestions that offer advice to improve the score. I think people get a little bit frustrated/blinded by the advice when there's nothing that can be done about third parties (I know I do!). Our product Calibre (mentioned in the bottom of the post) has a n adblocking/third party blocking feature that allows you to compare…

    Comment linking /blog/release-notes-apr-2019/

    on “How Google Pagespeed works”
  10. null_object · 2021-08-31

    Submitted Four Day Work Week: How and Why We Work Less as a story · 3 points

    HN discussion
  11. econnors · 2019-05-21
    A few resources I've found useful: - lighthouse ( https://github.com/GoogleChrome/lighthouse ). You can implement this with their Node CLI to automate in your pipeline and output the results somewhere. - calibre ( https://calibreapp.com/ ). Gives you nice graphs and snapshots over time.

    Comment linking /

    on “Ask HN: How to performance test React webapps for rendering speed regressions?”
  12. tagawa · 2023-09-12

    Submitted How to Improve CSS Performance as a story · 2 points

    HN discussion
  13. benschwarz · 2017-03-23
    Hi HN! I'm Ben, the solo founder of Calibre Analytics: https://calibreapp.com . Calibre monitors websites and applications in a clean-room testing environment from all over the world. Up until January Calibre has been an "inbetween other things" / evenings / holidays kind of project. (Only, oops—I did that for four years.). Last year I knuckled down to get into the position where I could work on it full time. I've s…

    Comment linking /

    on “Show HN: Calibre Test Profiles – Test your sites under real world conditions”
  14. brandrick · 2022-10-12

    Submitted Performance Budgets: The Easiest Way to a Faster Site as a story · 2 points

    HN discussion
  15. benschwarz · 2021-12-02

    Submitted Next.js Performance: Making a Fast Framework Even Faster as a story · 2 points

    HN discussion
  16. benschwarz · 2021-10-22

    Submitted Core Web Vitals Checker – Metrics from Google's Crux Dataset as a story · 2 points

    HN discussion
  17. helsinkiandrew · 2021-03-31

    Submitted How to Improve CSS Performance as a story · 2 points

    HN discussion
  18. colinprince · 2020-01-27

    Submitted Performance Metrics for Better User Experience as a story · 2 points

    HN discussion
  19. benschwarz · 2018-08-16

    Submitted What if browsers natively supported lazy loading? Turns out, soon they might as a story · 2 points

    HN discussion
  20. robin_reala · 2026-04-22

    Submitted Delivering a dynamic hexagonal world map in just 10kb as a story · 1 points

    HN discussion
  21. benschwarz · 2021-12-10

    Submitted Why Lighthouse Performance Score doesn’t work as a story · 1 points

    HN discussion
  22. EntICOnc · 2021-09-17

    Submitted Small Bundles, Fast Pages: What to Do with Too Much JavaScript as a story · 1 points

    HN discussion
  23. benschwarz · 2021-09-16

    Submitted Small Bundles, Fast Pages: What to do when there's too much JavaScript as a story · 1 points

    HN discussion
  24. manojvivek · 2021-05-04

    Submitted How to Prioritise Requests to Improve Speed as a story · 1 points

    HN discussion
  25. martinlaz · 2021-04-03

    Submitted How to Improve CSS Performance as a story · 1 points

    HN discussion
  26. tagawa · 2021-03-09

    Submitted We Deliver Great Customer Experience Without a Support Team as a story · 1 points

    HN discussion
  27. kaeruct · 2020-03-27

    Submitted Lighthouse changes how Performance Score is calculated as a story · 1 points

    HN discussion
  28. alexcasalboni · 2015-11-10

    Submitted Calibre: continuous website quality and performance telemetry as a story · 1 points

    HN discussion

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