BASALT · JOURNAL
How to redact a driver's license PDF or scan
A driver's license contains two versions of the same data: the human-readable front and, in many jurisdictions, a machine-readable barcode on the reverse. Redacting one side while sharing the other can disclose nearly everything you intended to remove.
Confirm what the recipient actually needs
Some transactions need proof of age, some need name and address, and some require the complete credential. Ask for a written minimum-data requirement before editing. A redacted license may not be acceptable for regulated verification.
Review the name, license or document number, address, date of birth, physical descriptors, portrait, signature, issue and expiry dates, and secondary identifiers. If both sides are present, inventory both.
Destroy image data and the barcode
License copies are usually scans or photographs. Redaction must alter the image pixels; a shape or annotation on top is removable. Cover the approved barcode region completely and re-encode the image, because a narrow uncovered strip may still scan.
OCR adds another copy. Remove invisible OCR text under marked areas, and search the finished PDF for the license number, name, address, and date in multiple formats.
Remove metadata and thumbnails
A phone photograph can carry capture time, device data, and location. PDF conversion may preserve some metadata or create a thumbnail. Strip EXIF-derived fields, PDF metadata, attachments, comments, and old revisions. Rename the release file so it does not contain the person's name or license number.
Extract and inspect every image from the final PDF, not just the rendered page. Redacting barcodes and QR codes adds verification techniques.
Frequently asked questions
Does the barcode contain personal data?
Often yes. Treat it as a separate representation and review the reverse side even when the visible front has been redacted.
Can I crop the license to hide fields?
Cropping may only change the visible page boundary while leaving image data outside it. Use destructive image redaction and verify the embedded image.
Is a redacted license valid identification?
That depends on the receiving organization and purpose. Confirm acceptance before sending an altered copy.
Doing it in Basalt
Basalt edits and re-encodes image pixels, clears the OCR layer beneath each mark, removes hidden metadata and thumbnails, and independently verifies the saved result. Processing is entirely local. Get Basalt.
Redaction that proves itself
Basalt destroys the content you mark, then re-opens the file it wrote and proves the content is gone before it saves anything. Your documents never leave your Mac.