Stop bad data
entering your business.
Harold extracts, checks, and fixes your documents before they hit your systems.
No consultants. No setup calls. Just try it.
- Supplier99%Acme Print Ltd
- Invoice no.98%INV-20451
- Issue date96%12 Mar 2026
- Subtotal95%£1,240.00
- VAT (20%)72%£238.00Total mismatch — expected £248.00
- Total88%£1,478.00Recalculated from line items
The problem
Most document tools extract data.
They don't make it right.
Missing fields
Half-extracted documents quietly break the workflows that depend on them.
Incorrect totals
Wrong VAT, wrong subtotal, wrong supplier — and your accounts go with it.
Manual checking
Your team spends hours every week re-reading documents the AI already saw.
The fix
Harold fixes the problem before it starts.
Extract
AI pulls data from any document — invoices, receipts, purchase orders, statements.
Validate
Rules catch mistakes the moment they appear. Wrong totals, missing fields, bad supplier IDs.
Automate
Send clean, validated data straight to your ERP, accounting tool or Zapier flow.
The flow
From document to clean data, in four steps.
- 1
Upload or email
Drop documents in, or send them to your unique Harold inbox.
- 2
Harold extracts
Headers, totals, line items, references — pulled out structured.
- 3
Rules validate
Checks run automatically. Issues are flagged or fixed.
- 4
Export or auto-send
CSV, Excel, ERP, or Zapier — the data lands clean.
The differentiator
Where Harold earns his keep.
Anyone can extract text. Harold turns extracted text into trustworthy, ready-to-use business data.
Rules engine
IF checks, formulas and conditional logic. Catch any mistake — or transform data on the fly.
IF total ≠ subtotal + vat → flagSupplier mapping
Map any supplier alias on a document to your internal supplier ID. Once. Forever.
DAVIDBRENT → DB00001Output templates
Shape the export to match exactly what your ERP, finance team or Zapier flow expects.
CSV · Excel · JSON · WebhookLine item validation
Validate every row, not just the header. Quantities, unit prices, line totals — all checked.
qty × unit_price = line_totalBuilt for
Teams using Harold today.
Stop chasing missing invoice data.
- Auto-validated totals
- Supplier ID mapping
- Clean export to Xero / QuickBooks
Automate purchase order processing.
- Line items extracted in full
- Quantity + price checks
- Auto-route to your ERP
Turn messy emails into clean data.
- Forward documents to a Harold inbox
- No new software for suppliers
- Export to Sheets, CSV or Zapier
Pricing
Simple, predictable pricing.
Standard is live now. Founder rate available for early supporters.
Founder
£19/month
One-time offer — limited availability
Locked forever for early Harold supporters
- 300 document extractions/month
- Saves ~4 hours of admin per month
- 5 active document boxes
- Unlimited automations
- Unlimited DocuTrain templates
- Rules engine included
- Price locked forever — never increases
- Won't last — claim it while you can
Standard
£29/month
For small businesses processing documents regularly
- 250 document extractions/month
- Saves ~3 hours of admin per month
- 3 active document boxes
- 5 automations
- 10 DocuTrain templates
- Rules engine included
- CSV & Excel export
- Email support
Premium
£59/month
Full automation with unlimited integrations
- 1,000 document extractions/month
- Saves ~12 hours of admin per month
- 10 active document boxes
- Unlimited automations
- Unlimited DocuTrain templates
- All export formats
- Zapier + webhooks
- Priority support
Enterprise
£149/month
High-volume processing with SLA guarantees
- 3,000 document extractions/month
- Saves ~35 hours of admin per month
- Unlimited document boxes
- Unlimited automations
- Unlimited DocuTrain templates
- All export formats
- Zapier + webhooks
- SLA support
Train any document.
Get clean data out.
Throw a document at Harold. Train it. Correct it. Watch it get smarter. If it works for you, sign up.
Start freeNo consultants. No setup calls. Just try it.
Media & Insights
From the Harold team
The Biggest Problems With AI Document Extraction (And What Actually Fixes Them)
The Biggest Problems With AI Document Extraction (And What Actually Fixes Them)
Why Invoice OCR Without Business Rules Validation Creates More Work Than Manual Entry
Basic OCR extracts text perfectly but ignores your VAT codes, GL mappings, and approval workflows. Here's why extraction alone isn't enough.
Why AI Invoice Scanning Stops at 80%: The Business Rules Problem
Most AI invoice scanners extract data but can't transform it for your systems. Here's why business rules matter more than extraction accuracy.