Hypothesis - Web & PDF Annotation

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

Latest reviews

• (2024-05-23) Abby Graham: I really enjoy the this extension, it's very useful and easy to use. My only issue is it's a little buggy. Whenever I click into a different tab and return to the pdf, the pdf doesn't load but only on pages I've highlighted. Occasionally, the highlight/annotate buttons will stop appearing when I select a sentence. The only way to fix this, that I've found, is to fully close the pdf tab, and return to the original website that I accessed the pdf on, and load it up again. Ultimately, I really like the extension but it needs to some kinks worked out!
• (2024-05-11) Jonathan - I AM: Hypothesis is a very useful system/service for highlighting and annotating webpages and PDFs. The extension itself could do with some refinements. It would be great to have a way to activate it for all webpages (a mode in which it's just ON during entire browsing session, or until manually turned OFF again). Currently I have to turn it on for every page, which is a bit tedious when doing a lot of research with potentially tens or hundreds of tabs.
• (2024-05-11) Dan Nichols: Fantastic but wished it stayed active or automatically activated on every page. Rather inconvenient to activate on every single instance desired.
• (2024-02-28) Bond Sun: This is very usefull extension, thanks a lot! By the way, why it logs me out after some time? Any way to keep signed in?
• (2024-02-01) Lakshya Dugar: very useful extension
• (2023-12-27) Jen Hardesty: Chrome extension never completes log in. Can't use it.
• (2023-12-15) Gabrielle: wow that's perfect
• (2023-11-15) Adriana Talhero: "hypothes.is precisa revisar a segurança da sua conexão antes de prosseguir"... e já faz 5 horas
• (2023-11-04) Emma O: Useless social media-ized antonation tool. You literally cannot even antonate or highligth local files without creating an account. Dev needs to clearly state their niche on app page, because this was a waste of 20 mins of my life
• (2023-11-04) Emma O: Useless social media-ized antonation tool. You literally cannot even antonate or highligth local files without creating an account. Dev needs to clearly state their niche on app page, because this was a waste of 20 mins of my life
• (2023-09-10) Yusuf Umac: Great app but my chrome extension keeps logging out way too frequently somehow. Every time I want to add a bookmark, I've to go through the singin flow again which is really frustrating. I've added the exception to allow cookies from the extension as well but using an add blocker, maybe that's why.
• (2023-09-10) Yusuf Umac: Great app but my chrome extension keeps logging out way too frequently somehow. Every time I want to add a bookmark, I've to go through the singin flow again which is really frustrating. I've added the exception to allow cookies from the extension as well but using an add blocker, maybe that's why.
• (2023-09-04) eric ingerson: This is a "social" annotation tool. Which is a weird thing. It makes your annotations public (for some reason) by default and accidental clicks show you every other user's annotations (for some reason). Collaboration makes sense, but this vast social media approach is bizarre and distracting, and it seems this is mostly a social media ap for discussing articles with every other user. The steps to make things private are unintuitive and awkward, and the labels in this regard are contradictory (eg your annotation will say "public" but with a lock icon, which means it's in a public sphere, but locked from view. Disconcerting.) There are other similar aps without the social media aspect whose features are similar.
• (2023-09-04) eric ingerson: This is a "social" annotation tool. Which is a weird thing. It makes your annotations public (for some reason) by default and accidental clicks show you every other user's annotations (for some reason). Collaboration makes sense, but this vast social media approach is bizarre and distracting, and it seems this is mostly a social media ap for discussing articles with every other user. The steps to make things private are unintuitive and awkward, and the labels in this regard are contradictory (eg your annotation will say "public" but with a lock icon, which means it's in a public sphere, but locked from view. Disconcerting.) There are other similar aps without the social media aspect whose features are similar.
• (2023-05-02) melissa flores: I wish it had a underlining feature, because personally for me underlining and highlighting are two different methods of annotating for me so i think it'll be a perfect addition to the extension
• (2023-05-02) melissa flores: I wish it had a underlining feature, because personally for me underlining and highlighting are two different methods of annotating for me so i think it'll be a perfect addition to the extension
• (2023-04-07) S J: Updated review: From 3 stars to 1. DO NOT USE. I spent HOURS going through and making notes on dozens of pages (an annoying, inefficient process as detailed below) yesterday, only to go back to it today, without even having closed the browser or the tabs in the meantime, and ALL but ONE page has lost the annotations. If I search for them, or for any done by me, it's the only one that comes up. So HOURS of work gone. This "service" is garbage and should NOT be used. Consider yourself warned. It's nice being able to annotate, but has issues. Can't set to always show notes (have to either leave the sidebar open or manually open it each time, instead of being able to keep note visible in corner), constantly having to log back in, which is both annoying and can cause issues, have to manually enable it on each and every page, even within the same site, and after having to log back in this last time every time I tried creating an annotation it would increment the counter number but not let me type anything, until I refreshed the page. Also, it reverts back to public instead of staying on private as set (or allowing a default to be set). Much potential brought down by poor design and possible bugs.
• (2023-04-07) S J: Updated review: From 3 stars to 1. DO NOT USE. I spent HOURS going through and making notes on dozens of pages (an annoying, inefficient process as detailed below) yesterday, only to go back to it today, without even having closed the browser or the tabs in the meantime, and ALL but ONE page has lost the annotations. If I search for them, or for any done by me, it's the only one that comes up. So HOURS of work gone. This "service" is garbage and should NOT be used. Consider yourself warned. It's nice being able to annotate, but has issues. Can't set to always show notes (have to either leave the sidebar open or manually open it each time, instead of being able to keep note visible in corner), constantly having to log back in, which is both annoying and can cause issues, have to manually enable it on each and every page, even within the same site, and after having to log back in this last time every time I tried creating an annotation it would increment the counter number but not let me type anything, until I refreshed the page. Also, it reverts back to public instead of staying on private as set (or allowing a default to be set). Much potential brought down by poor design and possible bugs.
• (2023-03-18) Knee Kab: I tried and used hypothes.is a year or two ago (along with every other note taking \ pkm \ bookmark tool \ extension in the world ... i finally gave up and went to (try to) use worldbrain Memex and then Obsidian, and then, frankly gave up, and just used OneTab. Lately i started trying to come up with "a plan" again. Memex with Logseq, sorted and organized tab groups to Tab++ and whole sessions saves to OneTab ... the bulk of it happens between Memex and Logseq. Memex recently went paid (for more than 50 uses per month) so i went back to searching. Tried this again. Its MUCH better now. Feels smoother, tighter, more in the right place stuff, less in the wrong place. Great features. Private notes (finally?) ... integrates with Logseq. Will be using this and Logseq now, with tabmanager back ups just to be safe. But a FULL TEXT SEARCHABLE annotation (and defacto bookmark) service with a graph capable PKM (logseq) is THE TICKET. If Hypothes.is ever beefs up their note taking capabilities, it will be untouchable. HELL YEAH!
• (2023-03-18) Knee Kab: I tried and used hypothes.is a year or two ago (along with every other note taking \ pkm \ bookmark tool \ extension in the world ... i finally gave up and went to (try to) use worldbrain Memex and then Obsidian, and then, frankly gave up, and just used OneTab. Lately i started trying to come up with "a plan" again. Memex with Logseq, sorted and organized tab groups to Tab++ and whole sessions saves to OneTab ... the bulk of it happens between Memex and Logseq. Memex recently went paid (for more than 50 uses per month) so i went back to searching. Tried this again. Its MUCH better now. Feels smoother, tighter, more in the right place stuff, less in the wrong place. Great features. Private notes (finally?) ... integrates with Logseq. Will be using this and Logseq now, with tabmanager back ups just to be safe. But a FULL TEXT SEARCHABLE annotation (and defacto bookmark) service with a graph capable PKM (logseq) is THE TICKET. If Hypothes.is ever beefs up their note taking capabilities, it will be untouchable. HELL YEAH!
• (2023-03-17) Adam Tompline: This extension does one extra thing that other extensions doesn't. The option to temporarily hide all the annotations/highlights on the page. I don't know why other extensions overlooked this simple to implement feature. Thanks for this feature. Improvements: More variations of color. Its a bit bland right now.
• (2023-03-17) Adam Tompline: This extension does one extra thing that other extensions doesn't. The option to temporarily hide all the annotations/highlights on the page. I don't know why other extensions overlooked this simple to implement feature. Thanks for this feature. Improvements: More variations of color. Its a bit bland right now.
• (2023-01-28) Krzysztof Płocharz: Keeps logging out. After each refresh of page I have to login again. After logging in I have to change "group".
• (2023-01-28) Krzysztof Płocharz: Keeps logging out. After each refresh of page I have to login again. After logging in I have to change "group".
• (2022-12-06) Laurent: Cannot use it without signing up
• (2022-12-06) Laurent: Cannot use it without signing up
• (2022-11-14) Tobi: Conusing, not intuitive, awkward.
• (2022-11-14) Tobi: Conusing, not intuitive, awkward.
• (2022-11-14) Mikel Butterfield: Cannot comment without sign up... 1 star.
• (2022-11-14) Mikel Butterfield: Cannot comment without sign up... 1 star.
• (2022-08-30) Angel Heart: If I say it's a good extension, it would not be a appropriate review. It's a legendary extension with amazing features! <3
• (2022-08-30) Angel Heart: If I say it's a good extension, it would not be a appropriate review. It's a legendary extension with amazing features! <3
• (2022-07-11) Daniel R: I love it, but it's really really really annoying how every time I try to use it, I need to log in again.
• (2022-07-11) Daniel R: I love it, but it's really really really annoying how every time I try to use it, I need to log in again.
• (2022-06-15) Bram Dg: Want to love it, but really need ~4 colors. Core functionality for me.
• (2022-06-15) Bram Dg: Want to love it, but really need ~4 colors. Core functionality for me.
• (2022-06-12) Kelechi Mba: I was going to use this extension for one purpose which was to annotate PDFs, but my browser (Vivaldi) wouldn't allow it, which is a shame. It would have been perfect for me if a lot of browsers could have access to this extension.
• (2022-06-12) Kelechi Mba: I was going to use this extension for one purpose which was to annotate PDFs, but my browser (Vivaldi) wouldn't allow it, which is a shame. It would have been perfect for me if a lot of browsers could have access to this extension.
• (2022-05-21) eatcosmos: 非常伟大的理想实践者
• (2022-05-06) Bevis Zhao: It's a good tool, obviously, especially it's free. Thank you! But I still need two more features, please consider: 1. Support the original format, e.g. bold, newline, list, etc. 2. Automatically highlight the lines after openning a page, and without showing the drawer.
• (2022-05-06) Bevis Zhao: It's a good tool, obviously, especially it's free. Thank you! But I still need two more features, please consider: 1. Support the original format, e.g. bold, newline, list, etc. 2. Automatically highlight the lines after openning a page, and without showing the drawer.
• (2022-04-10) Madame Minty: Might be best there is for collaboration. Wish it had more colors and more visible annotations (text on hover? anything, really). It would be nice if it had some sort of local storage cache, so it doesn't take 5 seconds to load what I just annotated.
• (2022-04-10) Madame Minty: Might be best there is for collaboration. Wish it had more colors and more visible annotations (text on hover? anything, really). It would be nice if it had some sort of local storage cache, so it doesn't take 5 seconds to load what I just annotated.
• (2022-04-06) Sanjida Shaheed: Love it! Works like a dream, ma shaa Allah. Is there a way to change the highlight colour? Also, I would like to be able to move an annotation from one group tp another when needed for better organization. Please let me know how to achieve this.
• (2022-04-06) Sanjida Shaheed: Love it! Works like a dream, ma shaa Allah. Is there a way to change the highlight colour? Also, I would like to be able to move an annotation from one group tp another when needed for better organization. Please let me know how to achieve this.
• (2022-03-17) ri sheng: 非常有用，只是在批量处理上面差了一点...
• (2022-03-09) ling song: nice
• (2022-03-09) ling song: nice
• (2022-03-02) Darith Chan: Everything a student could ever wished for! note, highlight and even sync!
• (2022-03-02) Darith Chan: Everything a student could ever wished for! note, highlight and even sync!