Practical tools for every workday

Bookkeeping

Simple bookkeeping: VAT-aware transactions, categories and filterable overviews.

IBAN check

Technical validation plus heuristic risk analysis on name and structure.

VAT check (VIES)

Validate EU VAT numbers directly via VIES. Includes holder name and address.

Postcode sanity check

Checks NL/BE/DE postcodes on format + unusual input — useful for exports and fulfilment.

Shipping rates

Compare PostNL and DHL rates by zone and weight. Calculate the cheapest match incl. handling.

Text & data

Developer and admin helpers.

JSON formatter

Validate, format or minify JSON. Errors pinpointed by line and column.

Diff checker

Compare two texts line by line. Additions, removals and unchanged lines marked.

Network & analysis

What do external services see about your connection?

What is my IP

Shows your public IP + country, city, provider and network type (mobile / datacenter / wifi).

Internet speed test

Measures ping, download and upload from your browser. No app, no account.

Access & identity

Who has access to which system, and is that still correct?

AccessGuard

Access matrix: who has access to which system. Periodic reviews, onboarding and offboarding in one view.

Security Radar

Scan websites for security headers, TLS certificates, cookies and CMP compliance. Daily cron + diff detection.

Hobby

Specialist lookups for collectors.

LEGO Element Finder

Look up a LEGO part by Element ID. Shows the part, colour, image and links to Rebrickable and BrickLink.

Files & media

Quick document and image edits.

PDF merge

Combine multiple PDFs into one file. Drag to reorder.

PDF redact

Draw black bars on PDF pages; content is rasterised so text cannot be extracted.

Favicon generator

Upload a logo, get every standard favicon size + .ico in a single ZIP.

DNS, security & domains

Live lookups for mail, web and certificate security.

DNS inspector

View A/AAAA/MX/NS/TXT/CNAME/SOA records of a domain in one overview.

SPF · DKIM · DMARC

Test mail authentication for a domain — instant report with improvements per record.

SSL/TLS check

Live TLS handshake: issuer, expiry, SANs, key info + warnings.

Security headers

HSTS, CSP, X-Frame-Options and more. A-F grade plus per-missing-header explanation.

WHOIS lookup

Registrar, registrant and expiry of a domain. .nl, .com, .be, .de, .fr and more.