Free tools

Free Developer Tools

Useful developer tools, free to use without an account. Inputs are processed transiently on our UK infrastructure and aren't stored.

Website assets

One image in, an icon package out: favicon, touch and PWA icons, manifest.

Generate a QR code as PNG. Every code is decoded to verify it before delivery.

Capture any website as a full page image in PNG, JPEG or WebP, at desktop, tablet or mobile size.

Decode a QR image or photo and see exactly what it contains, without opening the link.

Render HTML to a PNG, JPG or WebP image at the size you choose, fitted to the content or fixed.

Convert WebP, PNG or JPEG images to PNG or JPG, with optional resizing. Metadata is stripped.

Turn pasted HTML or a public page into a PDF, with paper size, margins and backgrounds.

Open a UBL or Peppol invoice or credit note as a readable document, then download it as a PDF.

Check a UBL invoice or credit note against EN 16931 and Peppol BIS Billing 3 rules, no account needed.

Turn a UBL or Peppol invoice XML into a readable, paginated PDF, keeping the original XML.

Check an XRechnung invoice or credit note in UBL or CII against the official XRechnung 3.0.2 rules.

Open an XRechnung in UBL or CII and read it as a document, with every value traced to its XML line.

Check a ZUGFeRD or Factur-X PDF or XML: the PDF/A, the embedded invoice and its metadata, and the ZUGFeRD 2.5.2 profile rules.

Generate UUID v4 and time-ordered v7, or decode any UUID to see its version and embedded time.

Built and operated by Ironfang in the UK. Inputs are processed transiently and never stored; see the privacy policy.