PDF & DOCUMENTS

Massive PDF Generator Local Mail Merge

Upload your PDF template (AcroForm) and a CSV file with your data. We map the fields and generate a ZIP with every document, processed 100% on your machine.

Batch PDF Mail Merge

Upload your PDF template and your CSV database to generate every document in one batch, without leaving your browser.

1. PDF TemplatePDF with fillable form (AcroForm)

2. CSV DataExported from Excel or Google Sheets (.csv / .xlsx)

How to generate batch PDFs for free?

With our PDF Mail Merge engine you don't need to upload sensitive data to external servers. Create a PDF with fillable fields (AcroForm), upload it alongside your CSV file (exported from Excel or Google Sheets), and our engine automatically maps your columns to the PDF form fields. Once finished, you download a single ZIP file containing all your merged PDFs.

Corporate privacy assured

When producing B2B documents like invoices, payroll receipts, contracts or batch certificates, privacy is paramount. All data merging and PDF creation happens entirely in your browser's memory, inside a Web Worker that keeps the interface responsive. Your databases never touch the internet.

Automate certificates and contracts

1. Upload your PDF template with fillable fields.
2. Upload your .csv data file (e.g. Name, Date, Amount).
3. Map each column to its corresponding PDF field.
4. Click Generate Batch and get a .zip with every document.

FREQUENTLY ASKED QUESTIONS

What is an AcroForm PDF?

A PDF containing interactive form fields (fillable text boxes). You can create one with Word (export to PDF with fields), LibreOffice, Adobe Acrobat or online form builders.

How many documents can I generate?

We impose no limits. The only constraint is your device's memory: batches of 500 to 1,000 documents process comfortably on a modern laptop.

Does my data leave my computer?

No. Both the CSV and the PDF are processed in your browser's memory. Nothing is uploaded, which makes it safe for payroll, student or customer data.