2026-09-24
Can an Online File Converter See My Files?
Learn when a converter receives your file on a server, when processing stays in the browser and what "access" means for local file conversion.
Can a File Converter See My Files?
The answer depends on how the converter is built. If a converter uploads your source file to a remote server, the provider's infrastructure necessarily receives that uploaded data for processing. If a supported conversion is carried out entirely in your browser, the source file does not need to be transferred to the provider's conversion server.
Browser permission
A webpage normally accesses a local file after the user deliberately selects it. This does not grant the website unrestricted access to every file on the device.
Application code still processes the selected data
Local processing means the program running in your browser receives the selected file contents in order to perform the requested operation. The important distinction is where that processing occurs.
Third-party resources
A browser application can download libraries or models without sending the selected source file to those locations. However, websites should clearly explain any third-party integrations that actually receive user data.
Format Convertly
For supported local conversions, Format Convertly's processing happens in the browser rather than through a Format Convertly file-conversion server.
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