Stable signalNo paid features detectedHigh-risk permissions
Lean Library icon

Lean Library

A library-approved tool to unlock access to academic papers.

Users200KCurrent public install base
Rating3.4Store average score
Reviews142Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

Lean Library Media preview

2 assets
Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

200K200K200K200K200K2026年7月15日2026年7月18日2026年7月21日Latest: 200K
Rating trend

7-day rating trend

View collected rating snapshots from the latest 7-day window to assess rating stability.

7-day rating change

Start
3.43
Latest
3.43
7-day rating change
0.00
3.333.383.433.483.532026年7月15日2026年7月18日2026年7月21日Latest: 3.43
2026年7月15日2026年7月21日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthFlat
00%
7-day growthFlat
00%
30-day growthFlat
00%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version2026.5.0
ManifestV3
Size11.91MiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

Providing an uninterrupted research rhythm

Lean Library is a free end-to-end research tool that brings your library’s services and resources directly into your research workflow, no matter where you start your research. Whether you are discovering and accessing academic content or saving references, Lean Library puts your library right at the heart of every research journey. Instantly and legally unlock millions of academic articles, eBooks, and open access content, avoid paywalls, and receive customised guidance from your library. Save references, highlight and annotate content, get journal alerts, and build information literacy skills with article retraction alerts and trust ratings—all from within your browser.

Ready to start using Lean Library?

Install the extension, select your institution and begin researching! Even if you aren’t

affiliated with an institution, you can still get quick and seamless redirection to open access materials absolutely free by downloading the extension and selecting Lean Library Open as your library.

Please note, the Lean Library browser extension works together with Lean Library

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score3.4Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.1Average computed only from synced review bodies below
Reviews with text103Synced review bodies
Total ratings / reviews142Chrome Web Store public rating/review count

Store average score: 3.4. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5
40
4
7
3
8
2
19
1
29
David de Muinck Keizer2021年10月6日
2

For many papers, its shows the text "Full-Text Achieved You are currently on a Full Text article. Good luck studying!", while the full text isn't shown anywhere. There's no button anywhere on the page or in the plugin to view the full text. The full text certainly isn't displayed anywhere. The original paywall on the page is still in tact. I have seen this at many sites. The amount of times that the plugin actually provides a button to download the pdf is very limited. Please fix this bug. Otherwise this plugin is useless.

Language en
2 helpful · 1 not helpful
Alex K9onit2021年10月6日
2

Slows down my browser when installed, so eventually uninstalled it. The extension kept taking me to my University page so that I can't browse on the publisher pages that I want to. Kept popping up with suggestions?? that I don't need. Avoid!

Language en
Matthew Hawkes2021年9月9日
5

As a librarian, I've used LEAN for around 3 years now. During the past eighteen months, it has saved me a huge amount of time while working from home. Granted, I will be spending more time on retrieving articles than most but I am yet to find a downside to this tool - I recommend it to all my students and the feedback is generally great. I work on a relatively high-spec machine but also run with a huge number of tabs / programs open and haven't noticed performance issues mentioned by others. Do sometimes find the pop-ups a bit slow though (i.e. the webpage has loaded but the pop-up takes a few more seconds). Disclaimer: while the above is my honest opinion, it is important to note that I have contact with the developers as LEAN is a product we offer at my university. I believe it to be an incredibly useful tool, but want to flag this relationship in the spirit of transparency.

Language en
3 helpful · 1 not helpful
Robert-Jan Pierik2021年5月24日
1

Doesn't work in maybe 80% of the time

Language en
1 helpful · 1 not helpful
MDT_2862021年5月12日
1

I need the extension for Uni, but it makes chrome extermely laggy and unresponsive. And that is on a high spec computer. I have to uninstall the extension everytime I finished using it, in order to use chrome comfortably.

Language en
1 helpful · 0 not helpful
Joseph Smith2021年5月5日
5

I find the extension very useful and it makes my research journey much smoother than before. Would recommend it.

Language en
1 helpful · 0 not helpful
AS Z2021年5月4日
1

While all my other extensions work fine, Library Access doesn't seem to work anymore, either with Firefox or Chrome browsers. When I click on the icon, nothing happens, it's blank. I am no longer logged in through my university log-ins while I visit a site the university has subscribed to. I don't know what to do...

Language en
Dóra Schuller2021年5月4日
2

Very bad user experience. When turned on, this app also wants me to log in to access publicly available articles and Wikipedia pages! Every time I load a page, it takes me away from there to the login, so I have to keep it turned off so I can browse peacefully. Also, in some sites I have to log in 3 times to download an article.

Language en
Dave Gerrard2021年4月22日
1

Should come with a health warning. Breaks links. Pollutes your referencing software. Academics should not use. Clicking the extension gives access but changes the URL in my browser bar. As someone who likes to copy sources by copy and paste, this is a fail. That URL is now useless for anyone outside my institution. Worse, I use a Zotero extension to store and manage references. The modified URLs then get imported into my referencing software. I doubt very much whether they will work in a few years time.

Language en
3 helpful · 0 not helpful
Yibo Chen2021年2月11日
3

The extension always doesn't work. Each time I wanna use the extension, I need to wait for quite long time before it starts to work. Hope Library Access could improve the extension to be faster and more stable.

Language en
2 helpful · 0 not helpful