Frequently asked questions

Do I need an account to use the tools?

No. Every tool works instantly with zero sign-up.

Is it really free?

Yes. Everything here runs in your own browser, so there is nothing to pay for.

Is my text sent to a server?

No. Text tools, calculators and generators run locally. QR images, YouTube thumbnails and IP location fetch data from their public services.

Are temporary phone numbers private?

No. Free numbers are public and shared — anyone can open the same inbox. Only use them for throwaway sign-ups, never for banking or personal accounts.

How do I save Text to Speech audio?

Type your text, pick a voice artist and language, then click “Open / save MP3”. An audio player opens — use Download in its menu to save the file. If the player shows an error, try the alternate link below the button.

Is Temporary Mail private?

No. A temporary address is disposable, not private — anyone who knows the address can open its inbox. Use it for throwaway sign-ups only, never for banking or important accounts.

Is the Website Speed Test a Google Lighthouse score?

No. It measures the main page from the SISW server (status, TTFB, load time, page size, HTTPS, compression) and counts resources from the page HTML. For a full Google Lighthouse report, use the PageSpeed link on the tool page.

How do I request a new tool?

Send us a message through the Contact Us form and tell us what tool you need. More tools are added on request.

What data does SISW keep about me?

As little as possible. See the Privacy Policy for what each tool collects, including the cookie and advertising disclosure.