Review an HTML file offline, with nothing uploaded
Plenty of HTML deliverables cannot be uploaded to review them. Client revenue, unreleased figures, anything under an NDA. The moment a tool asks you to host the page or paste it into a text box, that review is off the table.
The constraint, stated plainly
Feedback tools for web pages need the page to be reachable, so they ask you to host it, install an extension, or paste code into the site. Online HTML editors ask you to paste the markup into a form, which is an upload with extra steps. Either way the document ends up on someone else's server, and for a lot of work that is where the conversation ends.
What is actually needed is narrower: render the file, click things, write notes, get the notes back out. None of that requires the file to go anywhere.
What runs where
FixMyHtml is a static page. When you drop a file on it, the browser reads it from disk, and the review happens in the tab.
| Thing | Where it lives |
|---|---|
Your .html file | Read in the browser. Never sent to a server. |
| The rendered preview | A sandboxed frame in the same tab. |
| Your notes, signed out | This browser's local storage, on this machine. |
| Your notes, signed in | Stored so they follow you across devices. |
| Usage analytics | Page views and counts. Never file names, markup or note text. |
Signing in is the line. It exists so a review survives a closed laptop, and it saves the document to do that. For anything confidential, stay signed out. Everything except cross-device sync works the same way.
Checking the claim yourself
Do not take it on trust. The behaviour is observable in about a minute.
- Load the page, then go offline. Turn off wifi once the tool has loaded. Drop a file, click elements, write notes, copy the result. All of it still works.
- Watch the network tab. Open your browser's developer tools before dropping the file. Dropping it produces no request.
- Check what the preview can reach. The frame that renders your file is sandboxed, so a script inside a document you did not write cannot read the rest of the page.
When the file is a saved web page
If what you need to review is live rather than a file, Save Page As in any browser
gives you an .html to open the same way. Complete pages pull in their assets; a
single-file save keeps the markup and loses images loaded from elsewhere. For a text-heavy report
that is usually fine, and for an interactive app it is not.
Common questions
Is there an offline or desktop version?
There is no install. The page itself is loaded over the network once, and after that the review works with the connection off. It is not a packaged desktop app.
Can my employer's network see the file?
There is no request carrying it, so there is nothing on the wire to inspect. The file moves from disk to browser memory and stops there.
What about the notes I already saved while signed in?
They are stored with your account and can be deleted from the review list. If a document should never have been saved, delete that review rather than only clearing your browser.
Open a file without signing in