Invoice Extraction Tool for Web App

I am seeking a tool for my web application that can accurately and reliably read invoices received via my Gmail account and export them in a standardised PDF format. The tool should be able to handle invoices following a consistent format or structure.

Key Duties:
- Design and development of an invoice extraction tool which reads invoices from emails (Gmail)
- Ensure that the tool can accurately identify and categorise different elements within the invoice.
- Integration of the tool with my current web application.

Ideally, you should have:
- Strong experience in developing tools/software compatible with web-based applications.
- Proficiency in handling emails from Gmail specifically.
- Experience with standardised document handling or processing, preferably in invoice handling.
- Familiarity with PDF document exportation methodologies and standards.

I am excited to see how your skills and experience can help create a tool that makes processing invoice data easier for end users.