Free Text and Developer Tools: QR Codes, Word Counter, Domain Checks
Make QR codes and barcodes, count words, check a domain's email setup and validate SAML metadata. Free, with no sign-up.
Text and codes
Barcode Generator With Printable Label SheetsMake EAN-13, UPC-A, EAN-8, ITF-14, Code 128 and Code 39 barcodes in seconds, with the check digit worked out for you.
QR Code GeneratorMake QR codes for links, Wi-Fi, email, phone or text.
Word CounterCount words and characters as you type and see how close you are to X, Instagram and YouTube limits, plus reading time.
Developer and domain
Email Domain CheckerCheck a domain's SPF (with the 10-lookup limit), DMARC, DKIM, MX, MTA-STS, TLS-RPT and BIMI records in seconds.
SAML Metadata ValidatorPaste or upload SAML metadata XML to check the entity ID, IdP and SP endpoints, bindings, NameID formats, certificate expiry and key size, validUntil and signature.
How these tools work
Each tool does one job: type or paste your text, domain or file, and the result appears right away. Each tool page explains what it checks and how to read the result.
Frequently asked questions
Do the QR codes expire?
No. The QR codes are static, so they keep working as long as the link or text inside them does.
Is what I type sent to a server?
No. These tools run in your browser and nothing goes to our servers. The email domain checker asks a public DNS resolver for the domain's public records, straight from your browser.
Can I use these checks from my own code?
Some of them are also available as APIs for developers and AI agents. See the developers page for the list.