Tamper-evident.
Every signed PDF is cryptographically sealed. Change one character afterward and the signature breaks.
bulk sign invoices
Batch sign invoices in seconds
Invoice signing is not creative work. It is approval, signature, date, next invoice. PDFBatchSigner does the repeat work in one pass.
No account. No subscription. No server.
Live demo — Add documents to see each file auto-matched to a template, then sign the batch. Nothing leaves this page.
The specific problem
Invoices usually means invoice, vendor invoice, approval stamp, payment authorization, and amount approval. The names change. The signature work does not.
That is why this page exists for bulk sign invoices, not for generic PDF signing. This is for the stack, the repeat fields, and the moment where one-by-one signing stops making sense.
How it works for invoices
01
Template the repeat spot.
Mark invoice approval signatures and stamps on a sample PDF. Keep the template for the next batch.
02
Drop the stack.
Add the folder of PDFs. PDFBatchSigner looks for the same form structure and places the signature where it belongs.
03
Review, then seal.
The preview step keeps invoice signing fast without losing control of placement. One look, one click, tamper-evident output in the folder you choose.
Real signatures, not just pictures of one.
Shows in any reader.
This is a verifiable PDF signature built into the file, not an image pasted on a page.
Really you.
Use the Secure Enclave-protected device key by default, or import your own .p12 certificate.
Two ways to sign, your choice.
Default
Secure Enclave key
PDFBatchSigner signs with a secure key generated on your device and protected by Apple's Secure Enclave. Nothing to buy, nothing to set up, fully offline.
Advanced
Bring your own .p12
Already have a signing certificate from a trusted authority? Import your .p12 and your signatures carry your verified identity, recognized in Adobe Acrobat and beyond.
Invoice batches that are good candidates
- Vendor invoice approvals
- Payment authorization copies
- Month-end invoice packs
- Department approval packets
- Signed invoice archives
FAQ
Can I batch sign invoices on iPad?
Yes. PDFBatchSigner works on Mac, iPhone, and iPad, with templates and signatures synced through your own iCloud.
Are these real PDF signatures?
Yes. Each signed PDF is cryptographically sealed. If the file changes afterward, the signature breaks and PDF readers can show that the document was altered.
Do my invoices leave my device?
No files go to a PDFBatchSigner server. Signing happens on your device; templates and signatures sync through your own iCloud.
Can I use my own signing certificate?
Yes. The default key is generated on your device and protected by Apple's Secure Enclave. If you already have a trusted signing certificate, import your .p12 for a certificate-backed identity.
Can I sign multiple invoices at once?
Yes. Add the invoice PDFs as a batch, review placements, then sign them in one pass.
Drop the stack, done.
Join the private beta and be first to batch-sign invoices on Mac, iPad, and iPhone.
✓
You're on the list. We'll email your invite when your beta slot opens.
First 200 signatures free. Then $19. Once.