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Sign in to your account, click "New Capsule," upload your document, configure your sharing rules (expiration, view limits, password), and share the generated link with your recipient.

No. Recipients can view your capsule using only the secure link. You can optionally require email verification or a password, but they never need to sign up for Capsule.

Open the capsule in your dashboard, click "Revoke Access," and confirm. The link will immediately stop working, even if the recipient has viewed it before.

Capsule accepts images (JPEG, PNG, GIF, WebP), video (MP4, WebM, MOV), audio (MP3, M4A, WAV, OGG, WebM), and plain text or Markdown. Document uploads such as PDF and Microsoft Office files are not supported yet. All files are encrypted in transit and at rest.

Yes. You can extend or shorten the expiration date at any time from your dashboard. Changes take effect immediately.

File size limits are per file type and are the same on every plan: images up to 10 MB, video up to 100 MB, audio up to 25 MB, and text or Markdown up to 1 MB. Plans differ in total storage, not in per-file size.

Capsule uses AES-256-GCM encryption. Your documents are encrypted in your browser before they reach our servers. We never have access to the unencrypted content.