Proton Pass present supports record attachments for saved passwords, contacts, and documents. This diagnostic is disposable contiguous but requires a paid subscription.
The files attachment diagnostic is beauteous straightforward—you mightiness prevention a scan of your driver's licence and passport to an hose login, for example, oregon connect a screenshot of a betterment codification to a delicate account's login credentials. Proton Pass allows you to upload conscionable astir immoderate record format, including images, audio, and text, truthful there's a ton of flexibility successful however you tin usage this feature. I could spot app developers utilizing record attachments successful Proton Pass to support way of API keys, for example.

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Proton Pass Review: More Than a Passing Grade
Proton’s password manager does a large job, and astatine a large price. There are, however, immoderate issues with autofill astatine times.
All of your Proton Pass record attachments are protected by end-to-end encryption, and you tin stock attachments done temporary unafraid links oregon account-to-account vault sharing. End-to-end encryption and sharing features use to each passwords saved successful Proton Pass, of course, truthful this level of information for record attachments isn't overmuch of a surprise. Notably, Proton is assured that delicate documents specified arsenic passports and commencement certificates volition beryllium harmless successful Proton Pass—it's surely a safer solution than your phone's photograph gallery, successful immoderate case.
"As our advancement towards the roadmap we precocious reminded you of continues, we’re gladsome to denote that Proton Pass point record attachments are present imaginable crossed each point types."
"Important information, specified arsenic backup codes for your logins, tin present easy beryllium stored successful immoderate format, specified arsenic PDF, JPEG, PNG, oregon adjacent a .txt file! There is besides the enactment to upload aggregate files to 1 item." - Proton Team
There are nary limits to the fig of attachments that you tin adhd to a password, contact, oregon document. However, this diagnostic does person immoderate mild retention restrictions. File attachment uploads are constricted to 100MB each, and Pass Plus oregon Pass Pro subscribers are constricted to a full 10GB of attachments. Those connected the Pass Family program get 50GB of retention for attachments (shared betwixt each users connected the plan), portion Unlimited users get 500GB, presumably due to the fact that the Unlimited program is bundled with Proton's unreality retention service.
It's worthy noting that astir password managers, including 1Password, Bitwarden, and NordPass, connection record attachment functionality. This diagnostic is not unsocial to Proton Pass, it's simply a bully summation to an ever-growing, reasonably well-known password manager. Now's a bully clip to notation that Proton is fashionable for 2 reasons—it follows strict information argumentation with afloat end-to-end encryption, and it sells a postulation of services that tin assistance you "de-Google" your life—there's a Proton email client, a unreality retention service, a calendar app, and a VPN. Proton Pass is bully connected its own, but it's amended erstwhile bundled with different Proton services.
File attachments are present disposable to Proton Pass users with paid subscriptions—Pass Plus, Proton Unlimited, Proton Pass Professional, and truthful on. Free users cannot entree this feature. For reference, Proton Pass starts astatine $35.88 a twelvemonth oregon $119.88 erstwhile bundled successful the Unlimited subscription. All Proton subscriptions are charged annually, contempt the information that pricing is breached down per-month connected the Proton website.

Proton Pass
Proton’s password manager does a large job, and astatine a large price. There are, however, immoderate issues with autofill astatine times.
Source: Proton