alphaXiv

Discuss arXiv papers with inline, line-by-line comments in your browser

Some setup needed Web

research community #paper-discussion#research-community#arxiv-tools

About

Open any arXiv paper and add inline, line-by-line comments visible to other readers. Researchers and authors use it to ask questions, share critiques, and run public discussions directly on the preprint page. Unlike external forums or note apps, the browser extension anchors every thread to the exact paragraph on arXiv.

Editor's Take

Worth trying if you run reading groups or need paragraph-level feedback on arXiv preprints; best suited for researchers who can install a browser extension and want public, anchored discussions.

Key Features

Open an arXiv paper → add inline, line-by-line annotations that others can read and reply to
Post a question on a specific paragraph → get threaded discussion tied to that exact location
Install the browser extension → overlay the discussion UI directly on arXiv pages
Switch to dark mode → reduce eye strain during long reading sessions

Use Cases

A PhD student reviewing a new arXiv preprint and asking the authors clarifying questions inline
A lab instructor running a weekly paper reading group with paragraph-level comments on assigned arXiv papers

Try It Like This

1
Clarify a method section
Find the arXiv paper → install/enable the alphaXiv browser extension and open the PDF/HTML → select the paragraph describing the algorithm and add an inline question; wait for author or community replies tied to that exact paragraph.
2
Run a journal club discussion
Choose the week's arXiv preprint and share the URL with the group → each participant opens the paper with alphaXiv enabled and posts paragraph-level comments on figures and claims → synthesize the threaded comments into a meeting agenda or summary.
3
Track critiques across drafts
Open successive arXiv versions of a preprint with alphaXiv enabled → compare inline comments left on earlier versions to see unresolved issues → tag the authors or reply inline when a revision addresses (or doesn’t) specific critique.
4
Collect methods-to-reproduce details
Search arXiv for papers of interest and open them with alphaXiv → annotate experimental details line-by-line where information is missing or ambiguous → consolidate those inline notes into a reproducibility checklist for your lab.
5
Ask authors a targeted question
Open the specific paragraph with the assumption or claim you want clarified → post an inline, paragraph-anchored question rather than an email or forum post → monitor the thread for author replies and follow-up clarifying comments.

Pros & Cons

Pros

Anchors comments to exact paragraphs on arXiv, so discussions remain tied to the original text.
Browser extension overlays the discussion UI directly on arXiv pages, avoiding separate note apps or forums.
Supports threaded replies on a per-paragraph basis, enabling targeted back-and-forth between readers and authors.

Cons

Scope is limited to arXiv preprints — it does not provide the same inline discussion experience for non-arXiv sources.
No evidence of Korean-language support or localized UI, which may hinder non-English-speaking researchers.

Getting Started

1 Visit alphaxiv.org and create an account; install the browser extension from the site
2 Open any arXiv paper and highlight a line or paragraph to leave a comment
3 Refresh the page to see your annotation live and start a thread with other readers