File metadata is information stored alongside a file’s main content, such as an author name, capture time, camera model, or document title. The fields vary by format and by the software that created the file. Not every file contains sensitive metadata, but checking it can prevent sharing details you did not intend to include.
What metadata might a file contain?
| File type | Possible fields | What to remember |
|---|---|---|
| Photographs | EXIF capture time, camera/device details, orientation, software, and GPS coordinates when recorded. | Location may be absent; orientation can affect display. |
| PDFs | Title, author, subject, keywords, creator, producer, and creation/modification dates. | A PDF can also contain other metadata and document features. |
| Office documents | Author, last editor, document properties, company, and custom properties. | Comments and tracked changes are separate things to review. |
For example, a photograph can show an ordinary wall while its location field identifies where it was taken. Conversely, a screenshot may contain little capture metadata but visibly display a name in a notification. The appropriate check depends on the file, not an assumption that all metadata is sensitive.
Metadata removal is not redaction
If information is visibly present, use a suitable redaction workflow and verify the saved result. Covering text with a shape can leave the original text recoverable. Metadata cleanup also does not necessarily remove comments, attachments, hidden document content, or revision history.
What the current SoraFiles cleanup removes
The current Metadata Remover handles specific fields and containers in supported formats. Its scope is narrower than removing every possible identifying trace:
| Format | Fields or containers handled | Important limit |
|---|---|---|
| Standard title, author, subject, keywords, creator, and producer fields; document-level XMP metadata. | Creation and modification dates are reset to an epoch date, not deleted. Custom fields and other document content may remain. | |
| JPG | APP1 and APP13 metadata segments and comment segments. | Other segments remain; removing EXIF orientation can change how a viewer displays the photo. |
| PNG | Text metadata, EXIF, and modification-time chunks. | Image data and other chunk types are not a universal metadata wipe. |
| WebP | EXIF and XMP chunks. | Image content and other data remain. |
| Supported Office files | Selected core properties, company/manager properties, and custom properties. | This does not remove comments, tracked changes, or embedded content. |
These statements describe the current implementation, not every metadata cleaner. PDF cleanup can leave a date such as January 1, 1970; that represents the reset value, not the original document’s creation date. Inspect the downloaded copy rather than interpreting a “removed” count as proof that no metadata exists.
Does a screenshot or re-export remove metadata?
It can discard some fields, preserve others, or add new fields from the exporting application. A screenshot also changes the image and may include surrounding interface content. Re-exporting a PDF can affect quality, text selection, or document features. Neither operation is a universal substitute for inspection.
A practical check before sharing
- Keep an original copy, then inspect the file properties available in your viewer or editor.
- Review the visible pages or pixels, including backgrounds, notifications, and small text.
- Check comments, tracked changes, attachments, and hidden content where the format supports them.
- Apply supported cleanup to a separate copy and reopen it. Check metadata, appearance, and orientation again.
- Check the filename and the destination too; information can be exposed outside the file itself.
You can remove supported metadata with SoraFiles on your device. Read the Privacy page for its data-handling disclosures, and what local processing means for the distinction between keeping a file on your device and making its eventual shared copy safe to disclose.
References
- CIPA: Exif 3.0 overview (External link, opens in a new tab)
- Adobe: PDF properties and metadata (External link, opens in a new tab)
- W3C: PNG specification, third edition (External link, opens in a new tab)
- SoraFiles: Metadata Remover