Digital Sign
Sign hundreds of PDFs with your digital certificate
Certificate-based signing with PFX/P12 files. Visible or invisible. Batch sign every file in one click.
Download Free TrialHow It Works
Batch digital signing in three steps
Load Certificate & Files
Select your PFX or P12 certificate file and enter the password. Load the PDF files you want to sign — drop entire folders for batch processing.
Configure Signature
Choose visible or invisible signature mode. For visible signatures, set the position, size, and appearance. Optionally configure a timestamp server URL.
Sign All Files
Click sign and every loaded PDF receives the digital signature. Real-time progress shows each file being processed. Done in seconds, not hours.
Key Capabilities
Certificate-based signing at scale
Certificate Support
- PFX (.pfx) and PKCS#12 (.p12) certificate files
- Password-protected certificate handling
- Signature validation information embedded
- Certificate chain included in signed output
- Compatible with corporate CA-issued certificates
Signature Options
- Visible signatures with customizable appearance
- Invisible signatures for tamper-detection only
- Configurable signature position and dimensions
- Timestamp server support for trusted timestamps
- Reason, location, and contact info fields
Batch Signing
- Sign hundreds of files in a single operation
- Same signature applied consistently to every file
- Real-time progress tracking per file
- Output to new directory or sign in place
- Failed files don't block the rest of the batch
Compliance & Validation
- Signatures verifiable in Adobe Acrobat and other readers
- Meets requirements for legally binding digital signatures
- Tamper-evident — any modification breaks the signature
- Chain with form fill or redact in a pipeline
- Audit trail via operation log
Use Cases
When every document needs a signature
NDA Execution
A legal department signs 300 NDAs with the corporate certificate before distribution to contractors. Every document gets an identical, verifiable digital signature in under a minute.
Certificate of Compliance
A quality assurance team issues signed certificates of compliance for every product shipment. Batch sign 150 certificates with a timestamp server for legal proof of signing time.
Approved Invoices
A finance director digitally signs 200 approved invoices before sending to vendors. The invisible signature provides tamper detection without changing the document's visual appearance.
Frequently Asked Questions
What certificate formats are supported?
PDF Batch Editor supports PFX (.pfx) and PKCS#12 (.p12) certificate files. These are the standard formats issued by certificate authorities and enterprise IT departments. Password-protected certificates are fully supported.
Can I add a visible signature to the document?
Yes. You can choose between visible and invisible signatures. Visible signatures let you set the position, size, and appearance on the page. Invisible signatures provide tamper detection without changing the document's visual layout.
Are the signatures verifiable in Adobe Acrobat?
Yes. Signed PDFs include full certificate chain and validation information. Adobe Acrobat, Foxit Reader, and other major PDF viewers will recognize and verify the digital signature.
Does it support timestamp servers?
Yes. You can configure a timestamp server URL so that each signature includes a trusted timestamp proving when the document was signed. This is often required for legal and regulatory compliance.
Sign every PDF in one click
Certificate-based digital signatures at batch scale. Free 14-day trial.
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