QR codes, barcodes and validators

Generate QR codes and barcodes, inspect what a QR contains, and check IBANs, ISBNs, EANs and email addresses. All in your browser, with nothing uploaded.

  • Free
  • No sign-up
  • Runs in your browser

Popular searches

Ready-made pages for the most common conversions, calculations and formats.

Binary, decimal and hexadecimal converter

QR code generator

Barcode generator

All tools in this category

QR code generatorMake a QR code for a link, Wi-Fi, contact, email or text, and download it as PNG or SVG. Random winner pickerSpin a wheel to pick one or several random winners from a list of names. Barcode generatorCreate EAN, UPC, Code 128 and Code 39 barcodes and download them as PNG or SVG. Email address validatorCheck that email addresses are correctly written, one or a whole list. IBAN validatorCheck that an IBAN is valid and format it correctly. IP subnet calculatorNetwork, mask, broadcast and host range from an IP address and prefix. Number to words converterWrite any number or amount of money in English words. Phone number formatterClean and format phone numbers as E.164, international or national. QR code content inspectorSee what is inside a QR code, and where it really leads, before you open it. QR code with a logoPut your logo in the middle of a QR code and keep it scannable. Binary, decimal and hexadecimal converterConvert numbers between binary, decimal, hex and octal, and text to bytes. ISBN and EAN validatorCheck ISBN, EAN and UPC codes, and convert ISBN-10 to ISBN-13. Morse code translatorTranslate text to Morse code and back, and listen to it. Roman numeral converterTurn numbers into Roman numerals and Roman numerals into numbers.

What you can do here

Codes are how machines read the world: QR codes on menus and posters, barcodes on products, IBANs on invoices, ISBNs on books. This category gathers the tools to create those codes and to check that a number is valid before you use it, since one wrong digit can make a barcode unreadable or a payment fail.

The generators create static codes that never expire and carry no tracking, and the validators check the built-in check digit and the format of each code without contacting any service. Everything runs in your browser.

  • Generate: QR codes for links, Wi-Fi, contacts, WhatsApp and more, QR with a logo, and barcodes in several formats.
  • Inspect: see what a QR code contains before you trust it, or read one from an image.
  • Validate: IBAN, ISBN and EAN, email addresses and phone number formats.
  • Convert: binary, decimal and hexadecimal, Roman numerals, Morse code and numbers to words.

Frequently asked questions

Do the QR codes expire?
No. They are static codes with the content inside, so they work forever and need no account.
Is it safe to scan unknown QR codes?
Inspect the content first with the QR inspector; it shows the destination before you open it.
How do I check an IBAN or ISBN?
Paste it into the validator. It checks the length, the format and the check digits.
Can I put my logo in a QR code?
Yes. The QR with logo tool keeps the code scannable by raising the error correction.
Which barcode format should I use?
EAN-13 and UPC-A for retail products, Code 128 for labels and inventory, and ITF-14 for cartons.