Add verification to PDFs you already have

Already have certificates made in Canva, Word or elsewhere? Seal adds a Nyvarra QR code and verification record to each one, so you keep your design and gain the proof.

1. Open your certificates and choose Seal.
2. Upload a ZIP with one file per recipient (PDF, PNG or JPG), or one PDF with a certificate on each page.
3. Match every certificate to its recipient, and place the QR code once for the whole batch.
4. Seal the batch, then download the sealed certificates to send however you like.

Seal doesn't email recipients. You stay in control of how the sealed copies are sent.

Seal is available to approved organizational issuers with the Seal capability, normally Organization and above. It is not available to personal issuers.

Check eligibility and prepare the source

Seal requires an approved organizational issuer and the Seal capability. A personal issuer cannot use Seal simply by buying credits or changing plans. Start with final files that accurately name each recipient and award; the verification record must agree with the document being sealed.

Uploads can be up to 250 MB. ZIP archives are limited to 1,000 entries, with individual items up to 50 MB and a total uncompressed size up to 500 MB. Archive safety checks can reject unusual or heavily compressed files even below the upload limit. Keep a separate copy of your original files.

Review every match before sealing

1. Open Send → Seal existing PDFs for the correct set. Upload the ZIP or multipage PDF and let ingestion finish.
2. Map each file or page to the intended recipient. Inspect filenames, page numbers and certificate text; a plausible filename alone is not enough.
3. Review source-inspection and content warnings. Scanned or image-based documents can need more manual checking because text extraction is limited.
4. Position the verification overlay where it will not cover names, signatures or important wording. Preview different page sizes and orientations, not only the first page.
5. Validate the batch and resolve blocking items. Start sealing only once the recipient mappings and overlay are correct.
6. Follow the item results. Retry failed items through the batch controls when appropriate, then create and download the available export.
7. Open sample sealed files and scan their QR codes. Check that each result belongs to the person printed on that file before distributing the copies.

Understand failures and retention

An encrypted, corrupt or unsupported source can fail inspection. Existing signatures and differences in document proportions can require special attention. Do not flatten or alter a digitally signed original without understanding that doing so changes the original file; preserve it and ask support how to proceed if inspection blocks the source.

The implementation uses temporary retention for uploaded sources and generated export bundles. Download completed exports promptly rather than treating a batch's temporary files as your permanent archive. If an export is unavailable, reopen the batch and use the offered export action or contact support with its reference.

Seal does not email the sealed batch to recipients. Arrange distribution after checking the completed exports. Adding a QR code does not independently validate the educational or professional claim printed on the source.