Promvel

Mail Merge PDFs

Choose a PDF template and data file on your device, then generate mail-merged PDFs as a ZIP archive.

Choose template and data

Drag and drop a PDF here, or click Browse files.
Upload a CSV, JSON, TXT, or XLSX mapping file containing the data used to generate documents.

Choose naming method

Delivery options

Generate files

Files are generated automatically after selecting the template, data, and naming options.
Support surface

Use this tool inside a clear local boundary

These support notes stay focused on how the browser route behaves, what to expect while you work, and where to go next.

Workflow note Browser-only route Open, run, and download from this browser surface.
Workflow note Local processing PDF bytes stay in the browser while the tool runs.
Workflow note Metadata-only account layer Account data stays separate from document contents.
Workflow note Same boundary across tools Switch tasks without moving the file into another service.
Next task

Continue in another browser-local tool

Move to the next document step without changing how the file is handled.

Merge PDF Combine multiple PDFs into one file. Split PDF Create custom ranges or extract pages. Fill PDF Fill forms with structured data. Edit PDF Edit text, images, and more in your PDF.
See the tool index
Typical flow

How to Build Mail Merge PDFs in 3 Steps

  1. 1 Step 1 Upload one PDF template in the circular panel and confirm the template is loaded.
  2. 2 Step 2 Choose naming mode, then optionally upload JSON, CSV, or TXT mapping data for file-based naming.
  3. 3 Step 3 Run the mail merge build and download the generated ZIP output package.
Quick checks

Answers before you run the job

What is a mail merge PDF workflow?

A mail merge PDF workflow creates multiple output files from one template and a naming strategy. It is useful when you need many similarly structured files packaged as a ZIP for distribution.

Is it safe to process mail merge PDF files here?

Use HTTPS so files are protected in transit. Processing can run in-browser or through managed service endpoints depending on deployment configuration and environment controls.

Can I use JSON or CSV for naming input?

Yes. The mail merge workflow supports mapping input files such as JSON and CSV when using file-based naming mode. You can also use indexed filenames when no mapping is required.

Is there a limit to how many outputs I can generate?

Limits depend on memory, browser capacity, and deployment quotas. For large batches, split work into smaller runs to improve reliability and completion speed.

Does mail merge PDF work on mobile browsers?

Yes, it works on modern mobile browsers. Desktop is usually better for large batches and detailed review of output naming.

Keep the privacy boundary explicit

This route is a browser-only work surface. PDF processing stays in the browser, while account features handle metadata only.

 Review the privacy boundary