Optimize PDF · quick answer
What Repair PDF does
Use Repair PDF to choose a PDF that will not open correctly, rebuild its readable structure into a new file. Repair can recover many malformed files but cannot recreate bytes that are genuinely missing from the source. 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 repair pdf in your browser
- Choose a PDF that will not open correctlySelect a PDF that will not open correctly 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 repair pdf 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
- This workflow stops on interactive forms rather than risk losing their fields. Use Flatten first and check every visible answer in that saved copy, then open the flattened PDF here. Keep the editable original; protected or XFA forms may need a compatible form application first.
Essential questions
Does Repair PDF 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.