Is it safe to use an online file converter?
It depends on how the converter works. Many online converters upload your file to their servers, which creates a privacy risk. A converter that runs entirely in your browser, like ARTH Convert, never uploads your files, which makes it far safer for photos, IDs and confidential documents.
Check three things before using any converter: whether files are uploaded, how long they are kept, and whether the site is served over HTTPS. Be wary of sites that demand software downloads or ask you to disable your antivirus.
Browser based tools built on WebAssembly can process files locally. You can verify this by opening your browser's network panel during a conversion and checking that no file is sent.
Even with local processing, a website can still display third party advertising. Ads do not receive your files, but you should avoid clicking any that ask you to install software.
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How can I tell if a converter uploads my file?
Watch the network tab in your browser's developer tools while converting. A large upload request means your file left your device. You can also try converting with the internet turned off.
Is ARTH Convert safe?
Files are converted on your device and are not uploaded. The site shows advertising and counts visits anonymously.
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Last updated 9 October 2026. Published by ARTH, the studio behind ARTH Convert.