PrimeFreeTools

Manifest Generator: A PWA Without Guessing the Fields

September 12, 2026

Making a site installable starts with a manifest.json, and the fields are deceptively specific. Wrong names, missing icon sizes, or a bad start_url and the install prompt quietly never appears.

Enter the app name, colors, and icons and it generates a valid PWA manifest.json. Wire it into your HTML head and the browser treats the site like an app that can be installed.

Try it now: open the free tool, runs 100{ddff9936f8333f09603555df7bd6492034f3a4a35de784276d3cf3d66166a113} in your browser.

Bottom line: fill the manifest, install the app, skip the MDN scroll.

Your turn: use the tool free here, no signup, nothing leaves your device.

How do you use Manifest.json Generator?

Open the Manifest.json Generator in your browser (PWA manifest builder). Type or paste your input, adjust the options, and copy the result. Everything runs locally on your device with no account and nothing stored, so the three steps below take seconds even for confidential work.

  1. Paste the data or snippet you want to process.
  2. Run the tool and watch the output update.
  3. Copy the result for use in your own code.

Try Manifest.json Generator free. It opens right in your browser.

Questions & answers

Is Manifest.json Generator free to use?

Yes. It is part of the free PrimeFreeTools collection. No account, no sign-up, no hidden limits.

Does Manifest.json Generator upload my data?

No. The tool runs entirely in your browser. The code ships as static files and anything you type never leaves your device.

What does Manifest.json Generator give me as output?

Enter app name, colors, and icons to generate a PWA manifest.json. The result appears instantly below the input with a copy button, and nothing is saved on a server.