Know what happens to your files.
FileFiddler keeps original files in your browser whenever the tool can do so reliably. Protected tools clearly separate local processing from secure API processing.
Browser processing
Most FileFiddler tools process selected files entirely in your browser. Those tools do not intentionally upload the selected file contents to FileFiddler servers.
Protected reconstruction tools
Some tools use the private FileFiddler processing engine at api.filefiddler.com for reconstruction logic while keeping the original file local.
JPG → Excel: the image and OCR operation stay in your browser. The protected engine receives OCR text boxes and lightweight line geometry used to reconstruct the spreadsheet. The original image is not sent by this workflow.
PDF → Excel: PDF text extraction stays in your browser. The protected engine receives extracted text and page coordinates used to infer rows and columns. The original PDF is not sent by this workflow.
Split PDF by Category: page text is extracted locally and sent to the protected engine to detect and assign category labels. The actual PDF splitting and downloadable output are produced locally in your browser.