Privacy-First · No Signup Required · Vercel Edge

Your German Business
& Developer Toolkit.

A premium suite of tools for e-invoicing compliance, developer utilities, and business workflows.Built in Germany. Privacy-first. Free to start.

XRechnung ViewerXML Viewer
8+ Premium Tools100% Privacy-FirstDSGVO-KonformOpen in Browser

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Invoice & Compliance Tools

The complete e-invoicing pipeline

From parsing and validating XRechnung XML to generating ZUGFeRD hybrid PDFs — everything the German e-invoicing mandate requires.

FREE

XRechnung Viewer

Parse, validate & repair German e-invoices with GoBD-compliant audit trail.

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PRO

E-Invoice Generator

Create compliant XRechnung XML and ZUGFeRD hybrid PDF invoices instantly.

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FREE

KOSIT Error Hub

Searchable reference for all XRechnung validation error codes with fix guides.

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Developer Tools

Tools developers use daily

Fast, privacy-first utilities that process everything in your browser. No server uploads. No sign-up.

NEW

XML Viewer

Paste or upload any XML — collapsible tree view, syntax highlighting, XPath queries.

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NEW

JSON Formatter

Validate, format, and visualize JSON in a clean tree view. Diff two JSON files.

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NEW

Base64 Encoder

Encode/decode Base64, URL, HTML entities, JWT tokens, and hex instantly.

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NEW

Timestamp Converter

Convert Unix timestamps to human dates with timezone selector. Live epoch counter.

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NEW

UUID Generator

Generate UUID v4 instantly. Bulk generation and ULID support for Pro users.

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Upgrade to Pro

Remove ads on every tool. Unlock batch processing, API access, unlimited usage, and DATEV CSV export for €9.99/month.

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