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Open, share and comment on HTML files – without hosting

iPhones can't open local HTML files properly, and a hosting provider is too much effort for a single report. Annopane closes that gap: file in, done.

Last updated: November 1, 2026 · .html, .htm, .zip, .mhtml

In short

Upload the HTML file (or a ZIP with CSS and images) to Annopane. It runs immediately on your phone with JavaScript, shareable by link; recipients comment directly on the element. No server, no deployment.

Multi-file pages (index.html plus CSS, images, scripts) go in as a ZIP – Annopane detects the start file and serves all parts from a local cache, also offline.

How it works

  1. 1

    Pick the file or ZIP

    HTML, HTM, MHTML, web archive or ZIP. On iPhone also from the Files app or via the share sheet.

  2. 2

    Check that everything loads

    External fonts or APIs? Then enable “Allow network” in the file settings. It is off by default – for security.

  3. 3

    Share or save as an app

    Share icon for the link, or “Publish” for an address of its own with an icon on the home screen.

What works

  • JavaScript runs; forms and charts work
  • ZIP bundles with subfolders, MHTML and Safari web archives
  • Sandbox: the file can't access your other files
  • Comments on the element, with selector and XPath for the AI
  • Usable offline once opened

What doesn't (yet)

  • Server-side code (PHP, Node) doesn't run – only static HTML/JS
  • Very large bundles (over 100 MB) are too big for links

Typical uses

  • · Reports and dashboards from Claude, ChatGPT or Lovable
  • · Landing page draft for sign-off
  • · Interactive training material
Try with your own file

Frequently asked questions

How do I open an HTML file on iPhone?

Upload the file to Annopane (also via Share → Annopane). Safari alone shows local HTML files only to a limited extent.

Do images and CSS in subfolders work?

Yes, if you upload the folder as a ZIP. Relative paths are resolved.

Can I publish the file as its own app?

Yes: “Publish” gives the file its own address, a name and an icon. Recipients save it via “Add to Home Screen”.

What about external resources?

Blocked by default. Network can be allowed per file, e.g. for Google Fonts or a chart library from a CDN.

Read on

Related pages

Try it with a file you already have.

Free, no sign-up. Upload, share the link, collect feedback.

Start for free