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Easily annotate, share and save arXiv papers and articles.

Add before any URL to get started.

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How to read

All devices

Add before a URL in your browser to read the article in Smort.[URL]

Desktop browsers

Read in one click by using our bookmarklet. Drag it to your bookmarks bar and click on it to read the article in Smort.

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Download the iOS Shortcut for iPhone and iPad!

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Built in arXiv support

Tired of wrangling multiple arXiv PDFs and managing your library? We got you!
Smort renders the paper directly in markdown instead of a PDF. This allows us to offer first class annotation support and the ability to share your notes with friends.
You can also save your papers and build your reading library

Easily read & save Twitter threads

Prepend before any Twitter URL or tweet @smortapp save in reply to a tweet.


We're just getting started. Lots more in the pipeline

Read without signing up

Only want to annotate and share an article? No need to sign up! Follow our instructions to start reading. We've made it super easy to read and annotate.


Edit an article using Markdown and also undo and redo edits. We support all your favorite Markdown syntax with keyboard shortcuts.


Multi-color highlight, inline notes, bold, italics, and strikethrough are all included! Margin comments are coming soon.

Save Articles

Build your library by saving articles you've annotated or wish to read later. Personalize your username and control sharing settings.

Save Tweets

Save interesting Twitter threads by tweeting @smortapp save or prepend to a tweet URL.

Share articles

Share annotated articles with your friends! If you're not signed in, shareable links are valid for 7 days. Sign in to create permanent shareable links.


Customize your reading environment. Select the font size, style and background theme. Your selection persists across articles.

arXiv support

Read arXiv papers natively in Smort and organize your paper libray. Say goodbye to downloading PDFs.


Your saved articles are only visible to you. Make articles private after sharing them.

Coming soon!

Browser extensions

Read articles in Smort with the click of a button.