The AI summarizer that
shows its work.Summarize PDFs, Word docs, wikis and web pages - TL;DR, standard or detailed - with citations to the exact sentence behind every claim.
Residual Cache Reuse for Low-Latency Inference
We propose a residual caching scheme in which attention states from prior requests are reused when prompt prefixes match, reducing time-to-first-token substantially on chat workloads.
In evaluation across three serving stacks, median latency fell 41% while quality metrics were unchanged. The approach requires no model modification and no retraining.
Try it on a research paper. No account needed.
Paste a link or upload a small file. The same engine behind the extension returns a real summary with citations. Click a chip and read the exact passage it came from.
As short as you dare. As deep as you need.
TL;DR
Three or four sentences. The elevator version for a doc you only need the gist of.
Standard
The balanced default: key points, decisions and caveats, each with its citation.
Detailed
Section-by-section coverage for contracts, papers and specs you can't afford to skim.
The free plan includes Standard summaries; paid plans unlock TL;DR and Detailed.
A summary you can’t verify is just vibes.
Most AI summary tools hand you plausible prose and wish you luck. Sidenote validates every claim against the document server-side, drops anything it can’t back up, and lets you click through to the evidence.
Every claim cited
Summaries carry numbered citations. Click one and the document scrolls to the exact sentence, highlighted.
Scanned PDFs too
Image-only PDFs are OCR'd first, so even scans and old paper get a real, citable summary.
Summarize in place
No uploading to yet another web app. The summarizer lives in your browser's side panel, on the page you're reading.
Take it with you
Export any summary as Markdown, HTML, PDF or rich text, or send it as a share link.
Deep-dive: how Sidenote summaries work · how citations are verified · the best AI summarizer tools compared
AI summarizers, answered.
Stop digging. Start asking.
Add Sidenote to your browser, open any page in your wiki, and ask it the question you’ve been Slacking the team about.
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