KSeF FA(3) Toolsby Autum8

AUTUM8 / Invoice toolsets

KSeF FA(3) Tools

Read FA(3), export to Excel and check the published KSeF schema.

Invoice contents stay on your device by default.No invoice uploadsNo invoice cloud storage
Start free →Free checks. Paid resolution. ↓

Included tools

Choose the job you need

Free

View and check free

For one invoice at a time

KSeF FA(3) ViewerOpen KSeF FA(3) as a readable invoice.KSeF FA(3) ValidatorCheck KSeF FA(3) locally and understand why it fails.KSeF FA(3) → PDFTurn KSeF FA(3) into a readable PDF.KSeF FA(3) → ExcelExtract KSeF FA(3) invoice data into Excel.
Ready

Export and create

Repair, recipient preflight and source-to-ready generation

CSV → KSeF FA(3)Turn CSV source data into KSeF FA(3) XML.Excel → KSeF FA(3)Turn Excel source data into KSeF FA(3) XML.JSON → KSeF FA(3)Turn JSON source data into KSeF FA(3) XML.KSeF FA(3) Batch ValidatorCheck a folder or ZIP of KSeF FA(3) invoices locally.

For Polish finance workflows: turn FA(3) files into Excel, reuse source mappings and check a folder against the published schema. No KSeF submission or backend acceptance check.

Supported scope ↗

Technical Specification & Privacy Architecture

Pinned Official Standard & Version
Polish MoF KSeF FA(3) 1-0E (2025/06/25/13775)
Supported XML Namespaces & Profiles
Faktura · http://crd.gov.pl/wzor/2025/06/25/13775/
Privacy & Execution Architecture
100% client-side WebWorker execution via libxml2-wasm and SaxonJS; 0 bytes uploaded to any server.
Output Verification
Namespace-aware XPath source mapping + decimal.js arithmetic cross-checks (BR-CO-10/13/15/16).

AUTUM8 READY

Free checks. Paid resolution.

One Ready plan works across supported invoice formats.

Preview

Free

Viewing, single-file validation, plain-language errors and inspection exports stay free.

$0.00

  • Viewing, single-file validation, plain-language errors and inspection exports stay free.
  • Invoice contents stay on your device by default.
Free ↑

Ready

One Ready plan works across supported invoice formats.

$29.00/ month

50 documents / batch · 25 profiles

  • Repair, recipient preflight and source-to-ready generation
  • Saved local recipient profiles and source mappings
  • Repeat workflows with portable import/export
  • Local folder/ZIP workflows and diagnostic reports
  • No invented tax, identity, prices or order values
Ready →

Pro

One Ready plan works across supported invoice formats.

$69.00/ month

500 documents / batch · 250 profiles

  • Repair, recipient preflight and source-to-ready generation
  • Saved local recipient profiles and source mappings
  • Repeat workflows with portable import/export
  • Larger local batches and workflow libraries
  • Local folder/ZIP workflows and diagnostic reports
Pro →

Accountant

One Ready plan works across supported invoice formats.

$119.00/ month

500 documents / batch · 1000 profiles

  • Repair, recipient preflight and source-to-ready generation
  • Saved local recipient profiles and source mappings
  • Repeat workflows with portable import/export
  • Multiple client workflows on your device
  • Local folder/ZIP workflows and diagnostic reports
Accountant →

Indicative USD prices exclude applicable tax. The final currency and total must be confirmed before purchase.

Team collaboration and hosted API are deferred; not included in the current preview.

Implementation preview. Checkout remains disabled; no payments are taken.

Autum8 is owned and operated by Northkit Ventures.

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