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Browser-side encryption, security and privacy
Browser-side encryption means protected content is transformed into ciphertext on the user’s device before it is sent to the server. This reduces the need for the server to receive protected text or files in readable form.
Updated September 13, 2026
HTTPS and content encryption
HTTPS protects the connection between browser and server. Browser-side encryption adds another layer: in protected flows, content already leaves the device encrypted. With a passwordless quick link, the server receives content through HTTPS and protects storage; that mode should not be described as end-to-end encryption.
AES-256-GCM and passwords
Protected flows use AES-256-GCM, which combines confidentiality and authentication. Real security also depends on key derivation, correct randomness and password quality.
Use long, unique passwords. When useful, send the link through one channel and the password through another.
Metadata and practical limits
Encrypting content does not eliminate all operational metadata. A service may need identifiers, timestamps, expiration, approximate sizes or connection information depending on the feature.
Encryption also cannot make a compromised device safe and cannot prevent an authorized recipient from copying content after opening it. Security should be treated as a process rather than a single feature.
Practical checklist
- Distinguish HTTPS from browser-side content encryption.
- Use strong, unique passwords.
- Avoid shared devices for sensitive content.
- Use short expiration periods when possible.
- Assume an authorized recipient can copy content after opening it.
Common questions
Are HTTPS and browser-side encryption the same?
No. HTTPS protects transport; browser-side encryption encrypts protected content before that transport.
Does encryption remove all metadata?
No. Minimal technical data can still be required to operate the service even when content is encrypted.
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This content explains how the service works. Security also depends on password strength, the device in use, and how the link and password are shared.