File Converter Free includes browser-side tools and server-assisted conversion workflows. Many lightweight tools can run directly in your browser. Some file conversions may use secure server-side processing so the conversion can complete reliably, and processed files are cleaned up after completion.
Lightweight utilities such as JSON formatting, Base64 encoding, URL encoding, small image previews, and most text or developer tools run entirely in your browser. Your file does not leave your device for these tools. These tools work without sending your file to our servers, without an account, and without a server step.
Some conversion workflows -- for example large PDFs, video format changes, archive repackaging, and certain audio conversions -- use secure server-assisted processing so the conversion can finish reliably across browsers and devices. When a tool uses server-assisted processing, your file is transferred over HTTPS, the conversion runs in a temporary worker, and the resulting file is returned to you for download.
For server-assisted conversions, the source file and the converted file are kept only long enough to complete the conversion and let you download the result. Processed files are cleaned up after completion. We do not retain a copy of your file beyond the conversion window, and we do not use uploaded files for training, advertising, or analytics.
No sign-up is required to use any tool on the site. We do not require email, identity verification, or payment to convert or compress files at standard limits. If you encounter a tool that asks for any of those, treat it as a bug and let us know at editorial@file-converter-free.com.
Different tools have different practical limits. Browser-side tools are limited by your device's memory; very large files may fail or run slowly on lower-end hardware. Server-assisted tools have per-file size limits documented on each tool page. We do not advertise unlimited capacity, and we do not throttle paid tiers because there are no paid tiers.
For documents containing personal, medical, financial, legal, or otherwise sensitive information, prefer tools that explicitly run in your browser. When in doubt about whether a specific tool uses browser-side or server-assisted processing, check that tool's page or contact us before uploading. We do not provide formal compliance attestations such as HIPAA, SOC 2, or comparable frameworks, so the safer default is to keep highly sensitive files on your device.
Editorial and product questions go to editorial@file-converter-free.com. We respond to questions about how a specific tool processes files, what data is retained, and how to verify the workflow before uploading anything.
No. Lightweight tools run in your browser. Larger conversions (video, large PDF, certain audio and archive formats) use secure server-assisted processing. The tool's page tells you which path it uses.
No. There is no account, sign-up, or payment requirement to use any tool at standard limits.
Yes. Browser-side tools are limited by your device's memory. Server-assisted tools have per-file size limits documented on each tool page.
For highly sensitive files, prefer browser-side tools or do not upload at all. We do not provide compliance attestations, so the safer default is to keep sensitive files on your device.
For server-assisted conversions, processed files are cleaned up after completion. We do not retain a copy beyond the conversion window and do not use files for training, advertising, or analytics.