# mprimi/portable-secret

Better privacy without special software

Repository: https://github.com/mprimi/portable-secret
Canonical: https://ross.abutalabs.com/products/portable-secret
Homepage: https://mprimi.github.io/portable-secret/
Language: HTML
License: MIT
License Family: permissive
Topics: cryptography, encryption, javascript, privacy, secrets-management, security, web-cryptography-api, password-manager
Last push: 2024-07-21T21:15:10+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 1449, "days_push": 773, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1738, forks 116 (observed 2026-08-28T04:05:29.959605+00:00)

## What it is
Portable Secret is a tool that packs an encrypted payload and decryption JavaScript into a single self-contained HTML file, using the browser's Web Cryptography APIs. Anyone with the password can decrypt the secret in any modern browser, even offline, with no special software required.

## Use cases
- send encrypted files over email to non-technical people
- store passwords and 2FA recovery codes in insecure places like cloud drives
- keep copies of important documents accessible from any browser
- share sensitive messages over insecure messaging channels
- carry encrypted secrets on a USB drive that decrypts offline
- encrypt images or documents without installing PGP or other tools

## When to choose
- recipients cannot be expected to install or learn encryption software like PGP
- you need decryption to work offline in any modern browser
- you want a dependency-free, self-contained encrypted file
- you need emergency access to secrets even if your devices are lost

## When to avoid
- you need a full-featured password manager with vault sync and autofill
- you require authenticated multi-recipient or public-key encryption workflows
- you need enterprise-grade key management or audit trails
- you want an actively developed product rather than a demonstration hack

## Facets
- artifact type: application
- maturity: maintenance
- function: cryptography, security, secrets-management
- domain: security, privacy, files, web-development
- platform: browser, cross-platform
- tags: self-contained-html, password-encryption, web-crypto-api, portable-secrets, no-dependencies, file-encryption, web-server

## Member repositories
- mprimi/portable-secret (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:29.959605+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:30:36.858873+00:00, confidence not recorded.
  - readme: https://github.com/mprimi/portable-secret (fetched 2026-08-28T04:05:29.959605+00:00, sha 91339905348b)
  - homepage: https://mprimi.github.io/portable-secret/ (fetched 2026-08-29T11:07:39.266990+00:00, sha d6d01590fd30)
- Data as of 2026-08-30T08:39:29.467469+00:00.