Zero-knowledge file/paste/poll/chat sharing for anyone who can’t trust Drive/Slack/WhatsApp with sensitive stuff. Client-side AES-256-GCM; keys live in the URL fragment (server never sees content or metadata); no accounts/PII/phone numbers. Runs on Cloudflare Workers with region pinning. Pricing: pay-per-use credits (per GB uploads, per secure paste/chat/poll), bulk credit packs for frequent users. Target: lawyers/healthcare/M&A contractors/agency folks needing one-off or short-lived private exchanges; supports group chat but no team workspace. Moat: true zero-knowledge (only encrypted blobs to subpoenas), compliance-friendly regions, link-based flows with no signup
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Encryption
Client-side AES-256-GCM; key lives in URL fragment (server can’t decrypt).
Zero-knowledge
No accounts/PII/phone numbers; no metadata logging.
File size
Up to 15GB per share; expiring/password-protected links.
Mode
Files, notes/pastebin, polls, ad-hoc group chat.
Pricing
Pay-per-use credits (no subscriptions); no data monetization.
Zero-knowledge by default: client-side AES-256-GCM, keys in the URL fragment, no accounts/PII/phone numbers, no metadata logging. We literally cannot decrypt your content or comply with data requests beyond handing over encrypted blobs.
If you need to share up to 15GB files, notes, polls, or chats without trusting a provider, Privsen keeps keys client-side and doesn’t require identity. No server-stored keys, no hidden backups, no data monetization—just pay-per-use credits.
People and teams handling sensitive exchanges without wanting Drive/Slack/WhatsApp involved: lawyers, healthcare contractors, M&A/agency folks, security-minded individuals needing short-lived, private links.
We built Privsen after seeing “encrypted” services still log metadata, store keys, and wipe accounts via bots. We wanted a tool that is blind by design: keys stay with the user; providers can’t read, track, or sell data.
Next.js, React, TypeScript, Hono, R2, KV, D1 Web Crypto API (AES-256-GCM, HKDF).
Early-stage; privacy-focused professionals and small teams using pay-per-use credits.
I don't have verified, up-to-date information about Privsen (privsen.com), so I can't confirm whether it's a legitimate or high-quality product/service. I'd recommend doing independent research before trusting or purchasing from this site.
We have collected here some useful links to help you find out if Privsen is good.
Check the traffic stats of Privsen on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Privsen on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Privsen's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Privsen on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
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