Preview 4eyes
Stop typing invoices.
Drop a PDF — 4eyes extracts vendor, amounts, and dates on your device, ready to check and copy into your bookkeeping tool. Invoice entry in seconds, not minutes.
$ brew tap iterativeinsight/tap https://iterativeinsight.com/tap $ brew install --cask iterativeinsight/tap/4eyesbrew tap iterativeinsight/tap https://iterativeinsight.com/tap brew install --cask iterativeinsight/tap/4eyes
Requires Homebrew · Updates via brew upgrade ·
On Windows: installer (.msi), v1.6.13
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Why 4eyes exists
The Friday invoice stack
Twenty PDF invoices in the inbox. Vendor, invoice number, date, net, VAT, gross, IBAN — typed by hand, one by one, into the bookkeeping system. An afternoon gone.
The transposed digits
One IBAN digit off, one amount swapped. The payment bounces, the VAT return needs a correction, and finding the mistake costs more than the typing did.
Every other fix asks your suppliers to change — e-invoicing portals, supplier platforms, new formats. 4eyes reads the PDFs they already send. Your suppliers won't change. They don't have to.
How it works
Drop a PDF
Drag an invoice into the window — vendor, invoice number, date, net, VAT, and gross are extracted in seconds. Batches welcome.
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Your suppliers keep sending PDFs
No supplier portals, no format mandates, no asking anyone to change their process. 4eyes reads the normal PDF invoices your vendors already send.
You verify. That's the name.
Extracted fields are for checking, not blind trust. Correct any field in place — your edits stay clearly marked. Machine reads, human verifies: four eyes.
Built for Austrian and German invoices
VAT rates and exemptions with their legal basis, UID handling, ZUGFeRD/Factur-X e-invoices — DACH bookkeeping conventions work out of the box.
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Payment QR built in
Invoices carrying a SEPA GiroCode are decoded automatically, and 4eyes shows a scannable payment code — so the transfer is pre-filled, not typed.
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Export-ready rows
Copy structured rows straight into your bookkeeping tool. Columns are configurable to match your system — down to vendor account numbers.
We respect you.
Your privacy.
4eyes processes invoices entirely on your device. Nothing is uploaded — no cloud, no account, no sign-in. Client documents stay exactly where they are.
Your workflow.
4eyes feeds the tools you already use instead of replacing them. Structured rows go into your bookkeeping system — you don't migrate to ours.
Your autonomy.
Nothing locks you in. Your invoices stay your files, and the archive is plain folders beside your PDFs. If 4eyes stops being useful, uninstall it and lose nothing.
Your trust.
Preview means preview: 4eyes is young and improving with every release. We'd rather say that plainly than pretend otherwise.
Try the preview.
The extraction pipeline is live and improving with every release. Install 4eyes, drop an invoice, and see what it reads.
$ brew tap iterativeinsight/tap https://iterativeinsight.com/tap $ brew install --cask iterativeinsight/tap/4eyesbrew tap iterativeinsight/tap https://iterativeinsight.com/tap brew install --cask iterativeinsight/tap/4eyes
Requires Homebrew · Updates via brew upgrade ·
On Windows: installer (.msi), v1.6.13