E-invoices done right.

Create correct electronic invoices without worrying about XRechnung, ZUGFeRD or technical rules.

Create your first invoice free For developers

5 invoices a month free · No credit card · Hosted in the EU

Example
Invoice 2026-0042 Factur-X
Consulting, 8 hours
€760.00
Travel costs
€45.00
Total excl. VAT
€805.00
  1. Checked against Factur-X
  2. Fingerprint and timestamp recorded
  3. Ready to download

How do you want to use SealDoc?

  1. 01 Invoicing

    I write my own invoices

    For freelancers and small businesses. Pick a customer, fill in your work and create a correct invoice.

    From €7.50 a month, 5 a month free.

    Start invoicing

  2. 02 Webshops

    I run a webshop

    For online stores that want to automate their invoicing. From order to electronic invoice, without retyping.

    More for webshops

  3. 03 Platform

    I build software

    For SaaS, ERP and other platforms. Add European e-invoicing, validation and evidence through one API.

    See the platform

How it works

  1. Create

    You fill in the invoice: customer, work, amounts.

  2. Check

    SealDoc checks the invoice against the rules of the format your customer asks for, before you get it.

  3. Done

    Your invoice is ready in the electronic format you selected, ready to download and share.

An order in. An invoice out.

SealDoc is built to turn webshop orders into electronic invoices, without retyping or building your own e-invoicing.

More for webshops

Under the hood

You invoice. We handle the rules.

  • XRechnung 3.0
  • ZUGFeRD / Factur-X
  • EN 16931
  • Peppol BIS 3 (via the API)
  • PDF/A-3
  • RFC 3161 timestamping
  • SHA-384 hash chain
  • Hosted in the EU

You don’t need to know any of those acronyms. SealDoc knows them for you.

E-invoicing in Europe The evidence layer

Platform

Build your software. Not the e-invoicing infrastructure.

One API to create, validate and process electronic invoices, with a built-in evidence layer.

Developers Enterprise
Request api.sealdoc.eu 
POST /api/invoices/generate
X-Api-Key: sd_live_...

{
  "invoiceNumber": "2026-0042",
  "profile": "Basic",
  "seller": { "name": "Acme", … },
  "buyer":  { "name": "Globex", … },
  "lines":  [{
    "description": "Consulting",
    "quantity": 8,
    "unitPriceExclVat": 95.00
  }],
  …
}
Response 
200 OK
{
  "jobId": "9b2c1f3e-…",
  "status": "completed",
  …
}

Not just a correct invoice. Proof of what you created.

SealDoc records what was created and checked, with a digital fingerprint and a timestamp.

More about evidence
Example
Document hash
SHA-256 · 9c21 4e07 b3d8 … 05f2
Timestamp
RFC 3161 · 2026-10-02 09:14:05 UTC
Check
Factur-X: valid

Simple pricing.

Free
€0 5 invoices a month
SealDoc Invoice
from €7.50 a month, 50 to 500 invoices
SealDoc Platform
from €49 a month, for software and API
See all prices

Prices exclude VAT.

Create your first invoice today.

Start free