https://sideproof.sh/ · Tools
3 items
Highlights factual claims as you read. Click one to see what credible sources say, with citations and context, not a verdict. Fact-check claims as you read. sideproof is an evidence layer for the web: as you read, it quietly underlines the sentences that make checkable factual claims. Click one and sideproof shows you what credible sources actually say: the supporting evidence, the other side, and real links, graded by source quality. It gives you context, not a verdict, then gets out of your way so you can decide for yourself. How it works - Read normally. sideproof underlines checkable claims as you go. Detection runs entirely in your browser. - Click a claim, or press Enter on it, to check it. - A card shows what is really being claimed, what credible sources say, the sources with quality badges, and a short bottom line. Why you will like it - Context, not verdicts. It does not tell you what is "true." It shows the evidence and lets you judge. - Real sources, graded. Results link out to primary and major sources, labeled by quality. - Private by design. Claim detection is local. Only the claim you click is sent off, never your browsing history, and you can turn off sending the surrounding text in settings. - You are in control. Turn it on or off globally or per site, use a keyboard shortcut, and your settings stay on your device. Works on most news sites, articles, blogs, and major feeds. Anywhere there is text making factual claims, the underline can appear. Free to use.
Jun 29, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.