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Two directions: PDFs out, PDFs in
PDF automation usually falls into two groups.
Documents you send out
Quotations, invoices, certificates, reports, offer letters and statements generated from your data and a template, in the right layout, with the right name, ready to email or upload.
Documents you receive
Supplier invoices, bank statements, lab reports, purchase orders and forms that arrive as PDFs, where someone currently reads each one and types the important fields into another system.
Between these sit the handling jobs: merging, splitting, reordering pages, stamping, watermarking, compressing and password-protecting files. Many projects combine all three — for example, reading incoming orders, generating matching dispatch documents and filing both in the right folder.
Who uses it
- A coaching institute issues hundreds of personalised certificates and report cards at the end of each term.
- A manufacturer generates dispatch documents and test certificates for each shipment from production data.
- A real estate agency builds branded property brochures from listing data instead of editing a design file each time.
- A logistics firm splits a large batch of scanned delivery notes into one file per consignment.
- An accounts team extracts invoice numbers, dates and totals from supplier PDFs into a spreadsheet for reconciliation.
What we can automate
- Generation from templates using HTML and CSS or a PDF drawing library, with your branding, tables, images and QR codes.
- Merge and split by page ranges, bookmarks, blank separator pages or detected content.
- Stamp and watermark with text, logos, “Paid” or “Copy” marks, page numbers or signatures.
- Form filling of existing fillable PDFs from your data.
- Text and table extraction from digital PDFs into structured data.
- OCR for scanned documents, where text needs recognising before it can be extracted.
- Compression and protection, including password protection where appropriate.
Output that is checked, not assumed
At volume, a small template bug can produce a thousand wrong documents before anyone notices. We build checks into the process: required fields must be present before a document is generated, totals are recalculated and compared, and generated files are verified to be readable and non-empty.
For extraction, every field is validated against expected formats. A date that doesn’t parse or a total that doesn’t match its line items goes to a review list instead of being guessed at.
Tools and technology
| Task | Libraries |
|---|---|
| Generate from HTML templates | Jinja2 with WeasyPrint |
| Programmatic layouts | ReportLab |
| Merge, split, stamp, forms | pypdf, PyMuPDF |
| Text and table extraction | pdfplumber, PyMuPDF |
| OCR for scans | Tesseract via pytesseract, or OCRmyPDF |
For documents with highly variable layouts, such as invoices from many different suppliers, AI-based extraction can help. That work is covered by our AI Document Processing service.
What affects timeline and cost
- The number of templates and how complex their layouts are.
- For extraction, how many different document layouts you receive and whether they are digital or scanned.
- Scan quality, which strongly affects OCR accuracy.
- Where documents come from and go to — email, folders, a CRM or a portal.
- Volume and turnaround expectations.
Mistakes to avoid
- Assuming every PDF contains selectable text. Many are just images and need OCR first.
- Building extraction around one sample file, then discovering the supplier changes layout occasionally.
- Generating documents without checks, so a broken data row produces blank or wrong invoices.
- Storing generated documents with personal data in places without access control.
How a PDF project runs
- Collect samples. Real documents, including the messiest ones, plus the data that should fill generated templates.
- Prove feasibility. A short test on those samples shows how reliably extraction or generation will work before any larger commitment.
- Build the pipeline — templates, extraction rules, validation and the review list for uncertain cases.
- Run in parallel with the current manual process for a few batches and compare results.
- Go live with scheduling or a folder or email trigger, logging and failure alerts, then hand over a short guide.
Frequently asked questions
Can PDFs from many different suppliers be handled by one process?
Yes, although each distinct layout needs its own extraction rules or an AI-based approach. We group your documents by layout first, so the effort goes where the volume is.
Can you extract data from scanned PDFs?
Yes, using OCR. Accuracy depends on scan quality, so we test with your real documents first and build a review step for anything the process isn’t confident about.
Can generated PDFs match our existing design?
Yes. We recreate your current document design as a template, including logo, fonts, colours and layout, and fill it with live data.
How many documents can be processed at once?
Batches of thousands are routine. Processing time depends on document size and complexity, and jobs can run overnight or in parallel if needed.
Can generated documents be emailed automatically?
Yes. Each document can be emailed to the right recipient, uploaded to a portal or saved into a folder structure as part of the same job.
Talk to us about pdf automation
Generate, merge, split and extract data from PDFs without anyone opening a viewer.