# Wandlix

> Online file tools: convert, edit, compress and check PDFs, Office documents and images, and validate or create e-invoices (XRechnung, ZUGFeRD). Files are processed on servers in Germany, kept in memory only (never written to disk) and deleted after download, after one hour at the latest. Free daily allowance without sign-up; more with credits. Operated by IBA-TEC | IT-Systemhaus GmbH, Arnsberg, Germany. Available in English and German (German pages live under /de).

Wandlix also offers an HTTP API, an MCP server for AI assistants (OAuth sign-in, or an API key) and templates for n8n, Make and Zapier.

## Guides

- [What is an e-invoice?](https://wandlix.com/guides/what-is-e-invoice): XRechnung and ZUGFeRD explained simply: formats, mandatory details and what changes compared with a PDF.
- [E-invoice obligation: deadlines and checklist](https://wandlix.com/guides/e-invoice-obligation): Who has to receive and issue e-invoices from when, which exceptions exist and what you should do now.
- [Validate an e-invoice](https://wandlix.com/guides/check-e-invoice): How to validate XRechnung and ZUGFeRD, which errors are most common and what the result means.
- [XRechnung: structure and mandatory fields](https://wandlix.com/guides/xrechnung-format): What an XRechnung contains, where it is required and what to watch when creating one.
- [ZUGFeRD: PDF with embedded XML](https://wandlix.com/guides/zugferd-format): How ZUGFeRD works, which profiles exist and which ones are enough as an e-invoice.
- [XRechnung or ZUGFeRD?](https://wandlix.com/guides/xrechnung-vs-zugferd): Comparing the two formats and when each is more practical.
- [Leitweg-ID explained](https://wandlix.com/guides/leitweg-id): What the Leitweg-ID is, how it is built, where it comes from and where it goes in the XRechnung.
- [ViDA: e-invoicing in the EU](https://wandlix.com/guides/vida-e-invoicing): What the EU reform ViDA means for cross-border invoices and what it means for Germany.
- [EN 16931, XRechnung, ZUGFeRD: the standards](https://wandlix.com/guides/standards-and-versions): How the norms and formats relate, so the terms stop being confusing.
- [The most important fields of an e-invoice](https://wandlix.com/guides/e-invoice-fields): Reference of the most common BT fields with number, meaning and notes.
- [E-invoicing for small businesses](https://wandlix.com/guides/e-invoice-small-business): What applies to small businesses: receiving yes, issuing generally voluntary.
- [Receive and check an e-invoice](https://wandlix.com/guides/receive-e-invoice): A checklist for incoming invoices: recognise, validate, make readable and forward.
- [E-invoicing for freelancers and the self-employed](https://wandlix.com/guides/e-invoice-freelancers): In a few steps to an e-invoice without new accounting software.
- [E-invoicing in companies and ERP](https://wandlix.com/guides/e-invoice-companies): How a business with many invoices sets up inbound and outbound properly.
- [Retaining and archiving an e-invoice](https://wandlix.com/guides/archive-e-invoice): What to note about retention: period, form and unalterability.
- [Understanding and fixing validation messages](https://wandlix.com/guides/e-invoice-errors): The most common error messages when validating an e-invoice and what they mean.
- [Tax categories in the e-invoice](https://wandlix.com/guides/vat-categories): The tax categories (S, Z, E, AE, K, G, O) and when to use which.

## Tools

- [Validate e-invoice](https://wandlix.com/validate-einvoice): Check XRechnung and ZUGFeRD invoices against the official rules.
- [Create e-invoice (XRechnung)](https://wandlix.com/create-einvoice): Fill in a form and get a valid XRechnung or ZUGFeRD PDF – checked right away.
- [Merge PDF](https://wandlix.com/merge-pdf): Combine several PDF files into one document.
- [Split PDF](https://wandlix.com/split-pdf): Split a PDF into parts or extract pages.
- [PDF to image](https://wandlix.com/pdf-to-image): Save PDF pages as JPG or PNG images.
- [Compress PDF](https://wandlix.com/compress-pdf): Make PDF files smaller for e-mail and uploads.
- [Make PDF searchable (OCR)](https://wandlix.com/ocr-pdf): Make scanned PDFs searchable and copyable with text recognition.
- [Protect PDF](https://wandlix.com/protect-pdf): Encrypt a PDF with a password to open it.
- [Unlock PDF](https://wandlix.com/unlock-pdf): Remove the password protection from a PDF.
- [Delete PDF pages](https://wandlix.com/delete-pdf-pages): Remove unwanted pages from a PDF.
- [Rotate PDF](https://wandlix.com/rotate-pdf): Rotate all or selected pages of a PDF.
- [Add watermark to PDF](https://wandlix.com/watermark-pdf): Stamp text such as “CONFIDENTIAL” or “DRAFT” on every page.
- [Add page numbers to PDF](https://wandlix.com/add-page-numbers): Number the pages of a PDF – position, format and start number are up to you.
- [Reorder PDF pages](https://wandlix.com/reorder-pdf): Sort the pages of a PDF: move, repeat or reverse them.
- [Crop PDF](https://wandlix.com/crop-pdf): Cut margins off PDF pages.
- [PDF to PDF/A](https://wandlix.com/pdf-to-pdfa): Make PDFs and Office files ready for long-term archiving (PDF/A).
- [PDF to text / Markdown](https://wandlix.com/pdf-to-text): Get the text of a PDF as clean text or Markdown – ready for AI tools.
- [Remove metadata](https://wandlix.com/remove-metadata): Strip hidden data from PDFs and photos.
- [Images to PDF](https://wandlix.com/images-to-pdf): Combine JPG, PNG and WebP images into one PDF.
- [Image to text (OCR)](https://wandlix.com/ocr-image): Read the text from a photo or screenshot, or make a searchable PDF.
- [Convert image](https://wandlix.com/convert-image): Convert between JPG, PNG and WebP.
- [Compress image](https://wandlix.com/compress-image): Make JPG, PNG and WebP files smaller.
- [Edit image](https://wandlix.com/edit-image): Rotate, flip and crop images.
- [Word to PDF](https://wandlix.com/word-to-pdf): Convert Word documents to PDF.
- [Excel to PDF](https://wandlix.com/excel-to-pdf): Convert spreadsheets to PDF.
- [PowerPoint to PDF](https://wandlix.com/powerpoint-to-pdf): Convert presentations to PDF.
- [Numbers to Excel](https://wandlix.com/numbers-to-excel): Turn Apple Numbers spreadsheets into Excel files.
- [Document converter (DOCX, ODT, XLSX, ODS …)](https://wandlix.com/convert-office): Convert Office files between Microsoft and OpenDocument formats.
- [PDF to Word](https://wandlix.com/pdf-to-word): Turn a PDF into an editable Word document (approximation).
- [Text to PDF](https://wandlix.com/text-to-pdf): Turn text files into neat PDF documents.
- [Extract XML from ZUGFeRD PDF](https://wandlix.com/extract-einvoice-xml): Get the invoice XML out of a ZUGFeRD or Factur-X PDF.
- [E-invoice to PDF](https://wandlix.com/einvoice-to-pdf): Turn an XRechnung XML or ZUGFeRD file into a readable PDF.
- [CSV to Excel](https://wandlix.com/csv-to-excel): Turn CSV files into Excel workbooks – separator and numbers are recognised.
- [Excel to CSV](https://wandlix.com/excel-to-csv): Save an Excel sheet as a CSV file with the separator you need.
- [Create ZIP file](https://wandlix.com/zip-files): Pack several files into one ZIP archive.
- [Unzip files](https://wandlix.com/unzip-files): Open a ZIP archive and download the files inside.
- [QR code generator](https://wandlix.com/qr-code): Create QR codes for links, WLAN, contacts, e-mail, events, payments and more.
- [JSON, CSV, XML, YAML converter](https://wandlix.com/convert-data): Convert data files between JSON, CSV, XML and YAML in any direction.
- [Convert text encoding](https://wandlix.com/convert-encoding): Convert a text file between UTF-8, Windows-1252 and other character sets.
- [Base64 encode and decode](https://wandlix.com/base64): Encode a file as Base64 text, or decode Base64 text back into a file.

## For developers and AI assistants

- [API documentation](https://wandlix.com/api-docs): call every tool over HTTP with an API key; OpenAPI file at https://wandlix.com/api/v1/openapi.json
- [Integrations](https://wandlix.com/integrations): MCP server (https://wandlix.com/api/v1/mcp), n8n, Make, Zapier

## About

- [Pricing](https://wandlix.com/pricing): free daily allowance, credits (one-time) or an optional monthly plan; prices include VAT
- [Security and privacy](https://wandlix.com/security): how files are handled
- [Privacy policy](https://wandlix.com/privacy)
- [Contact](https://wandlix.com/contact)