ToolXkit Icon

Web App Manifest Generator

Everything the install prompt requires, and what happens without each field.

  • Free
  • No signup
  • Nothing uploaded
  • No watermark
manifest.webmanifest
{
  "name": "My Application",
  "short_name": "My App",
  "start_url": "/",
  "scope": "/",
  "display": "standalone",
  "theme_color": "#1f2937",
  "background_color": "#ffffff",
  "icons": [
    {
      "src": "/icons/icon-192.png",
      "sizes": "192x192",
      "type": "image/png"
    },
    {
      "src": "/icons/icon-512.png",
      "sizes": "512x512",
      "type": "image/png"
    },
    {
      "src": "/icons/maskable-512.png",
      "sizes": "512x512",
      "type": "image/png",
      "purpose": "maskable"
    }
  ]
}

How to Use the Web App Manifest Generator Online

Web App Manifest Generator: before and after TEXT A YOUR INPUT WEB APPMANIFESTGENERATOR DONE A RESULT

Everything the install prompt requires, and what happens without each field. Browsers fail this silently — a manifest missing a required field produces no prompt and no error, which is why a nearly-correct manifest behaves identically to none at all.

No software to install Free Works on any device

Step-by-Step Guide to Using the Web App Manifest Generator

  1. 1. Fill in the fields — the file rewrites itself as you type

  2. 2. Anything the specification requires and you have missed is flagged above the output

  3. 3. Copy or download it, and put it where the page says it must live

Try it now

What is the Web App Manifest Generator?

Everything the install prompt requires, and what happens without each field. Browsers fail this silently — a manifest missing a required field produces no prompt and no error, which is why a nearly-correct manifest behaves identically to none at all.

Why Use Web Development Tools in the Browser?

Small web jobs like minifying CSS, checking HTML, escaping a string or writing a Dockerfile rarely deserve a new install. These tools do each one in a tab, and your code is never sent to a server.

“The fastest tool is the one already open in a tab.”
  • Code checked for errors
  • Messy code made readable
  • Number bases converted
  • Selectors and paths tested
  • Minified files for faster pages
  • Config files from templates
  • CI workflows drafted quickly
  • Source code stays private

Popular Uses for Developer Utilities

These are the small tasks that interrupt a day of web work.

  • Minifying assets Shrink CSS or JSON before deploying, then beautify it again to read.
  • Validating markup Catch unclosed tags and syntax errors in HTML, CSS or JavaScript before publishing.
  • Docker setups Draft a Dockerfile, Docker Compose file or .dockerignore for a new project.
  • CI pipelines Generate a GitHub Actions or GitLab CI workflow and adjust it to fit.
  • Number conversions Convert between binary, decimal, hex and octal while reading low-level data.
  • Selector testing Try a CSS selector or JSONPath expression against sample input and see matches.
  • Data URIs Turn a small image into a data URI to embed directly in CSS.
  • Project files Create .gitignore, EditorConfig and CODEOWNERS files without copying them from old repos.

What You Can Do with the Web App Manifest Generator

Generation happens on your own machine, at your machine's speed

Options are explained rather than listed, so the file is understood before it is committed

Generates a valid file for the tool’s current schema, not a version that has since changed

Why Use ToolXkit for Web App Manifest Generator?

Your files stay with you

Everything runs inside your browser. Nothing you open or type is uploaded to a server.

Web Dev Tools for Different Users

Front-end developers

Validate, minify and beautify HTML, CSS and JavaScript as part of daily work.

DevOps engineers

Draft Docker, cron and CI files quickly, then refine them in the repo.

Coding students

Learn number systems, escapes and selectors by trying examples and seeing results.

Technical writers

Escape code samples and check snippets before putting them into documentation.

QA testers

Write clear bug reports and test CSS selectors against real page markup.

Open source maintainers

Set up issue templates, CODEOWNERS and gitattributes for a shared project on GitHub.

Best Times to Validate or Minify Code

Keep these open in a tab when you are:

  • Starting a new repository
  • Preparing a site for launch
  • Tracking down a syntax error
  • Containerising an app
  • Setting up automated builds
  • Reading hex or binary values
  • Writing a bug report
  • Working on a locked-down laptop

Frequently Asked Questions

Answers to common questions about this tool.

Do I need to install anything to use the Web App Manifest Generator?

No. Web App Manifest Generator runs entirely in your browser — there is nothing to download, no extension and no desktop program. It works the same on Windows, macOS, Linux, Android and iPhone.

Is it safe to use the Web App Manifest Generator online?

Safer than the usual alternative, yes. Most online tools upload your file to a server you know nothing about, where it sits until someone deletes it. Here the file never leaves your device — the processing happens in the page itself, so there is no server copy to leak, retain or sell.

Will minifying break my code?

Minifying removes spaces, comments and line breaks without changing what the code does. Keep an unminified copy for editing, and test the minified version before deploying it.

Are the generated config files ready to use?

They give you a sound starting point based on common settings. Every project is different, so read through the file and adjust paths, versions and secrets before committing it.

Further reading

More Web Development Tools

Other free tools for the same kind of job.

Browse all tools