What powers readwise.io?
Last seen Jun 2026 · 44 technologies across 19 categories
Analytics
Authentication
Apple Sign-in
since Feb 2021
CDN
Amazon S3
since May 2022
cdnjs
since May 2022
Cloudflare
since Apr 2018
Google Hosted Libraries
since Feb 2022
jsDelivr
since Dec 2020
CMS
Google Workspace
since Aug 2022
Mailgun
since Aug 2022
Font scripts
Font Awesome
since Dec 2020
Google Font API
since Apr 2018
Issue trackers
Cloudflare Network Error Logging
since Feb 2022
JavaScript frameworks
Next.js App Router
since Sep 2024
React
since Sep 2024
JavaScript libraries
Miscellaneous
HTTP/3
since Sep 2022
Open Graph
since Sep 2022
PWA
since Aug 2022
RSS
since Dec 2022
Webpack
since Sep 2024
PaaS
Performance
Priority Hints
since Sep 2024
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PhotoSwipe
since Mar 2025
Programming languages
RUM
New Relic
since Jun 2018
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Google Tag Manager
since Jun 2018
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Headless UI
since Sep 2024
Tailwind CSS
since Sep 2024
Web frameworks
Web servers
gunicorn
since Jun 2018
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| readwise | #1 | 2,500 |
| amazon first reads | #48 | 70 |
| amazon ebooks | #38 | 57 |
| heroku | #46 | 57 |
| syncer meaning | #81 | 47 |
| reading io | #1 | 43 |
| butterfly revolution | #11 | 33 |
| readwise api | #1 | 33 |
| kindle website | #25 | 31 |
| amazon ebook | #38 | 29 |
| kindle web app | #19 | 27 |
| kindle library | #35 | 25 |
| wiser meaning | #85 | 23 |
| readwise reader pricing | #1 | 21 |
| readwise reader app | #1 | 21 |
| rss feed reader | #48 | 21 |
| ibooks | #31 | 21 |
| new kindle | #49 | 19 |
| kindle website reader | #20 | 19 |
| amazon send to kindle | #55 | 17 |
| kindle web reader | #31 | 17 |
| kindle web | #21 | 17 |
| kindle online reader | #42 | 16 |
| kindle cloud | #46 | 16 |
| bookcision | #1 | 15 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 85% desktop
- 14% phone
- 1% tablet
United States
Canada
Australia
Switzerland
Taiwan
South Africa
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
7.39 / 10 · ranked #24,124 of all domains
944 referring domains · OpenPageRank
Search traffic
4,300 est. monthly organic visits (US)
4,013 keywords in Google's top 30
Core Web Vitals
| LCP | 1.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 5.8 MB · 65 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| read.readwise.io | 20 |
| readwise.io | 19 |
| docs.readwise.io | 15 |
| wiseup.readwise.io | 13 |
| blog.readwise.io | 12 |
| www.readwise.io | 10 |
| wise.readwise.io | 8 |
| speed.readwise.io | 7 |
| help.readwise.io | 6 |