Question 1

Are my files uploaded to a server?

Accepted Answer

No. Every tool runs entirely inside your browser tab using JavaScript and WebAssembly. Files are read into memory on your device, processed locally and saved straight back to your disk. The app has no upload endpoint at all - you can even watch your network tab stay silent while you work.

Question 2

Is Utility Tools free to use?

Accepted Answer

Yes, completely free with no premium tier, no watermarks and no usage limits. The project is supported by goodwill, and every feature - including batch conversion and high-resolution exports - is available to everyone.

Question 3

Do I need to create an account or sign in?

Accepted Answer

No account, email address or sign-in is required anywhere in the app. Open the site and start working immediately. Preferences such as favorite tools and countdown timers are saved only in your browser's local storage, never on a server.

Question 4

Does it work offline?

Accepted Answer

Yes. Utility Tools is an installable Progressive Web App with a service worker, so after your first visit the app shell and core assets are cached on your device. You can install it to your dock or home screen and keep converting files even with no internet connection.

Question 5

Which file formats are supported?

Accepted Answer

Images: PNG, JPG, WebP and more, plus SVG optimization and rasterizing. Documents: PDF (merge, split, rotate, watermark, text extraction), Markdown, HTML and DOCX. Data: JSON, CSV, YAML, XML and XLSX. Media: audio decoding with WAV export and video re-encoding to WebM or MP4. Utilities: QR codes, Base64, SHA hashes, ZIP archives, unit and timestamp conversion.

Question 6

How do I open a specific tool quickly?

Accepted Answer

Press Ctrl+K (or Cmd+K on Mac) anywhere to open the command palette and search all 20 tools by name or keyword. You can also bookmark shareable links in the form /pdf-toolkit/ to jump straight into any tool, or drag a file onto the page and the app routes it to the right converter automatically.

Audio Converter