About PDF4.IN

A focused PDF workspace

PDF4.IN offers three free browser-based tools: Merge PDF, Add Page Numbers, and PDF Info. No account or payment is required, and real advertisements are disabled.

How these tools work

The three tools read selected PDFs in your browser. Their processing code does not send document bytes to a PDF4.IN processing endpoint. Merge PDF creates a combined copy; Add Page Numbers adds searchable numbers to supported pages; PDF Info inspects document properties and selectable text. Each tool describes its limits beside the workflow.

Files and generated results may remain temporarily in browser memory while a tool is open. Downloads follow your browser and device settings.

Project location

PDF4.IN is independently operated from Surat, Gujarat, India – 394510. This is a location disclosure, not a street address or a mailing address for documents.

PDF4.IN does not claim government affiliation, certification, or professional accreditation.