html-cloud

Share an HTML file privately from the command line — encrypted in your own process before anything is uploaded. No account, no project setup, no public URL.

npx html-cloud ./report.html

Share link (anyone with this can view):
  https://html.cloud/v/kT4eN7xQ#b3FvXyJq…

Edit link (keep private — replace, change expiry, delete):
  https://html.cloud/e/kT4eN7xQ#9dKw2mPv…

Pipe straight from a generator:

my-report-tool | npx html-cloud -

Why this exists

AI tools (Claude, ChatGPT, Gemini) produce self-contained HTML — presentations, reports, dashboards, prototypes. Sending one to a client or colleague usually means a public deploy or a clunky attachment. html-cloud gives you a private link in one command.

How the encryption works

• The file is encrypted with AES-256-GCM locally, in this process.
• The decryption key is placed after the # in the share link. URL fragments are never sent to servers — by the browser or by this tool.
• The server stores only ciphertext. It cannot read your file; nobody can without your link. This is the same zero-knowledge model as the html.cloud website, using the same open-source crypto module.

Read the full explainer: html.cloud/security

Options

| Option | Description | Default | |---|---|---| | --expires <7\|30\|never> | Days until the link expires | 30 | | --url <base> | Server base URL (or $HTML_CLOUD_URL) | https://html.cloud | | --no-copy | Don't copy the share link to the clipboard | copy is on |

In interactive use the share link is copied to your clipboard (pbcopy, wl-copy/xclip/xsel, or clip, whichever your OS has). When output is piped or scripted, the clipboard is never touched.

Limits: one .html/.htm file (or stdin), max 10 MB. Expiry can be changed later from the edit link.

Honest threat model

Anyone who has the share link can read the file — link handling is on you. The server can delete or expire ciphertext but can never read it. For details and limitations, see html.cloud/security.

Requires Node 20+. MIT licensed.