PWA Manifest Generator & Validator
Create and validate a web app manifest with names, icons, display mode, colours and start URL.
Build ManifestDeveloper Tools
Build a Permissions-Policy header for browser capabilities such as camera, microphone and geolocation. The interface provides a focused workflow, clear output and export or…
Build a Permissions-Policy header for browser capabilities such as camera, microphone and geolocation.
Privacy: Your input is processed in the browser where supported and is not intentionally stored by this tool.
The code, structured data, expression, token, or sample value requested by the interface.
Choose only the settings that apply to the result you need; leave optional controls unchanged when you are unsure.
Start the task and wait for the interface to return its result or a clear setup message.
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Create and validate a web app manifest with names, icons, display mode, colours and start URL.
Build ManifestFetch and inspect bounded public HTML source with line numbers and a downloadable text copy.
View SourceConvert structured data between JSON and a practical safe YAML subset in the browser.
Convert DataConvert JSON objects and arrays to XML or turn ordinary XML elements into JSON.
Convert DataConvert newline-delimited JSON records to a JSON array and back with row-level validation.
Convert RecordsThe code, structured data, expression, token, or sample value requested by the interface. Start with a representative input and use only the options needed for your intended result.
A transformed, generated, or diagnostic result for the submitted technical input. Generated material is a draft; check accuracy, ownership, formatting and suitability before use.
Test the result in a non-production environment. Never paste passwords, private keys, live access tokens or confidential production data.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.
The page can be used without creating a visitor account. Your browser or device may limit unusually large files or demanding media jobs.
This Permissions-Policy Header Generator page is organised around the task described in the tool interface. Build a Permissions-Policy header for browser capabilities such as camera, microphone and geolocation. The result changes when the source data or selected options change, so it is easy to run a second comparison.
The code, structured data, expression, token, or sample value requested by the interface.
A transformed, generated, or diagnostic result for the submitted technical input.
A practical way to use it is to inspect a small representative sample before applying the same change in a production workflow. Start with a representative input, inspect the first result, then adjust one setting at a time if you need a different outcome.
Processing stays in the browser where the individual feature supports it. Live public checks use a protected, rate-limited site endpoint; avoid unnecessary sensitive data.