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Free online tools

Handy tools for freelancers and small businesses – free, no sign-up and no upload to third-party servers. Everything runs directly in your browser.

Invoicing & taxes

Create XRechnung & e-invoices

E-invoices in XRechnung 3.0 format (EN 16931) – free, no sign-up.

Create ZUGFeRD invoices

ZUGFeRD 2.x / Factur-X as PDF/A-3, profile EN 16931 – validated, free.

Open & read XRechnung

View XRechnung or ZUGFeRD PDFs as a readable invoice, print or save as PDF – no upload.

VAT calculator

Quickly calculate gross, net and VAT.

Create a quote

Generate quotes and estimates as PDF.

Images & files

Compress & resize images

Compress photos, resize and convert to JPG, PNG or WebP – free.

PDF tools

Compress, merge, reorder PDFs or turn them into images.

Accessibility

WCAG checker

Test a web page in a real browser with axe-core against more than 60 WCAG rules – including colour contrast, with fix hints.

More helpers

QR code generator

Create QR codes for links, Wi-Fi or contacts.

Password generator

Create strong passwords.

JSON formatter

Format, validate and minify JSON.

Unit converter

Convert length, weight, temperature, area and more – right in the browser.

Colour converter

Convert colours between HEX, RGB and HSL – with a colour picker.

Text tools

Count words and characters, change case, remove duplicates.