Review & data · quick answer
What Compare PDF files does
Use Compare PDF files to choose two PDF drafts, identify textual changes between them. The comparison works on document text rather than pixel differences, making wording changes easier to review. Filozy starts the document engine only after you choose a file, performs the work inside this tab, and creates a new result for you to save. Your selected document, its filename, and its contents are not sent to Filozy.
How to compare pdf files in your browser
- Choose two PDF draftsSelect two PDF drafts from the dropzone. Filozy reads it locally and shows the relevant preview or controls before changing anything.
- Review the settingsUse the page preview and available options to decide exactly how compare pdf files should handle this document.
- Create and check the resultRun the tool, review the reported page count, size, or notes, then save the newly created file while keeping the original.
Limits worth knowing
- The result depends on the structure and quality of the source document, so visually inspect the exported file before relying on it.
Essential questions
Does Compare PDF files upload my file?
No. The selected file is opened and processed by code running in this browser tab. Document bytes and filenames are not sent to Filozy.
Will this change my original file?
No. Browsers cannot silently overwrite the file you selected. Filozy creates a separate result for you to save or pass to another local tool.