Explainer ·
Browser extensions, shared devices, and local security limits
Utilio can keep local tool content out of Utilio servers, but it cannot make an untrusted browser, extension, device, account, or network safe.
Short version
Local processing means Utilio does not send supported local tool content to Utilio servers for the core task.
Browser extensions, shared browser profiles, device sync, clipboard tools, malware, enterprise monitoring, and the device owner can still change what happens on that device.
Use a trusted device and a clean browser profile for sensitive files, text, passwords, keys, tokens, domains, and generated results.
What happens
When a local Utilio tool runs, the browser tab reads the selected file or pasted value and performs the task in active-tab memory. The page can show, copy, or download the result from the same device.
That browser-local model reduces what Utilio can receive. It does not replace the security of your operating system, browser profile, extension permissions, clipboard, downloads folder, screen, or network.
- A PDF or image result can still be visible to anyone who can access the same unlocked device.
- A browser extension with broad site access may be able to read or change page data while you use a tool.
- A password, UUID, QR code, or cleaned text result can remain in clipboard history, downloads, screenshots, or browser memory after the task.
What does not happen
Local processing does not send local files, pasted text, passwords, keys, tokens, generated values, or local tool results to Utilio servers for storage or conversion.
It also does not give Utilio control over your installed extensions, browser account sync, operating-system users, device owner, corporate software, malware, clipboard manager, screenshots, or files you save after export.
- Utilio does not become a device antivirus or extension auditor.
- Utilio does not erase downloads, clipboard history, browser history, or synced files from your device.
- Utilio does not prevent someone with access to the same unlocked computer from seeing the screen or saved result.
What you should still watch out for
For sensitive work, use a device and browser profile you trust, close unrelated tabs, review extension permissions, avoid broad userscript or automation extensions, and clear clipboard/downloads when needed.
On a shared, public, school, or work device, assume the owner, administrator, installed software, browser sync, and network can have more visibility than Utilio. Do not process confidential documents, production secrets, private customer data, or internal hostnames there.
Network tools and future server processing are separate
DNS Lookup is a network lookup tool. It sends the domain and DNS record type to Cloudflare DNS over HTTPS; the same browser and device cautions still apply to the page, clipboard, screen, extensions, and saved notes.
Future Utilio tools with server processing would be a separate model with their own processing notice. Local device security limits would still matter, but that page would also need to explain what is sent, stored, retained, and deleted.
Questions people ask about local browser security
Can browser extensions read files I open in a local tool?
A file is not sent to Utilio by the local tool, but an extension with broad permission to read and change site data may still see page content or interfere with the page. Review extension permissions before sensitive work.
Is it safe to use local tools on a shared computer?
Only for low-risk work. A shared or public device can expose the screen, downloads, clipboard, browser profile, local history, sync state, or administrator monitoring. Use a trusted device for confidential content.
Does Incognito or Guest mode make local tools fully private?
No. These modes can reduce local browser history or profile sharing, depending on the browser, but they do not hide activity from every website, network, device owner, administrator, extension, or malware.
What should I do before using a sensitive file locally?
Use your own device, update the browser, disable unnecessary extensions, avoid managed or public computers, keep the screen private, and clear clipboard or downloads if the result should not remain there.