Hypothesis - Web & PDF Annotation icon

Hypothesis - Web & PDF Annotation

by Annotation Unlimited PBC · hypothes.is · Social Networking
FeaturedEstablished publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Collaboratively annotate, highlight, and tag web pages and PDF documents.

Users
300K
0 in 30 days
Rating
3.9 / 5
−0.20 in 30 days
Ratings
225
+2 in 30 days
Store rank
#990
#903 among extensions
Version
1.1754.0.0 (Official Build)
updated 15 Apr 2026

Users

monthly, 3 years
30K165K300KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 300,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
60142225Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 225 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Hypothesis - Web & PDF Annotation

Use Hypothesis to hold discussions, read socially, organize your research, and take personal notes on webpages, PDFs and EPUBs.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%0−0.20
30 days0+0.0%+2−0.20
6 months0+0.0%+1−0.18
1 year0+0.0%+3−0.18

Chrome Web Store search rankings

Where Hypothesis - Web & PDF Annotation appears when people search the store, with the 30 day change
Search phrasePosition30 days
web#67+33
pdf#97+2

Version history

125 versions recorded
1.1754.0.0 (Official Build)15 Apr 2026
1.1729.0.0 (Official Build)21 Nov 2025
1.1724.0.0 (Official Build)10 Nov 2025
1.1717.0.0 (Official Build)17 Oct 2025
1.1712.0.0 (Official Build)8 Oct 2025
1.1696.0.0 (Official Build)17 Sep 2025
1.1677.0.0 (Official Build)12 Aug 2025
1.1656.0.1 (Official Build)13 Jun 2025

Details

Category
Social Networking
First seen
28 May 2020
Size
4.8 MB
Languages
en
Pricing
Free
Privacy policy
hypothes.is
Support
hypothes.is
Extension ID
bjfhmglciegochdpefhhlphglcehbmek

Permissions and risk

Moderate riskimpact 3, likelihood 1
Permissions
scriptingstoragetabs
Site access
<all_urls>
Can read and change data on every website you visit.

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