Online Generators for QR Codes, Passwords and More

Make the things you need in a hurry: a QR code for a menu, flyer or business card, a barcode for a product label, a strong password or passphrase, or a batch of UUIDs. Barcodes download as PNG or SVG, and QR codes download as PNG at the size you pick, so choose a large size for print.

Developers and site owners can generate realistic test data (names, emails, phone numbers, addresses, CSV files, mock API JSON and Luhn-valid test card numbers) plus meta tags, robots.txt, sitemap.xml and .htaccess files. Designers can build CSS gradients, box shadows, color palettes and favicons and copy the code in one click.

Everything is generated in your browser, and nothing you enter is uploaded. Passwords and UUIDs come from your browser's built-in cryptographically secure random number generator (the Web Crypto API).

23 free tools in this category. All run in your browser with no signup.

QR code and barcode generators

Create a QR code from any link or text with your own size and colors, or a Code 128, Code 39, EAN-13, UPC-A or ITF-14 barcode for labels and packaging.

QR Code GeneratorMake a free QR code for a link, Wi-Fi login, email, phone number or contact card, choose error correction and colors, then download a PNG or SVG.Barcode GeneratorGenerate Code 128, Code 39, EAN-13, EAN-8, UPC-A and ITF-14 barcodes with automatic check digits, then download them as print-ready PNG or SVG files.

Password and UUID generators

Generate strong random passwords or passphrases with a strength meter that shows the entropy, and create up to 1,000 version 4 UUIDs at once.

Password GeneratorCreate strong random passwords or easy-to-type passphrases in your browser, with adjustable length, character types and a live entropy strength meter.UUID GeneratorGenerate random v4 or time-ordered v7 UUIDs and GUIDs in bulk, in lowercase, uppercase, braces or no-hyphen formats, entirely in your browser.

Name and username generators

Get random first, last and full names for characters, games and placeholders, or a username in a fun, professional, cyber, cute or mystic style.

Random Name GeneratorGenerate random first, last and full names by gender and origin, from American and British to Japanese and Indian.Username GeneratorGenerate gamer, cute, cyber, fantasy and professional usernames with digits, separators, your own word and length limits for X, TikTok and Instagram.

Color, CSS and icon generators

Build linear and radial gradients, layered box shadows and five-color palettes, then copy the CSS. Make a favicon from text or an emoji at 16, 32, 64 and 180 pixels, or search and copy from more than 1,200 emoji.

Color Palette GeneratorGenerate a five-color palette from any base color with analogous, complementary, triadic, split or monochromatic rules, lock swatches and copy hex or CSS.CSS Gradient GeneratorBuild linear, radial and conic CSS gradients with a live preview, up to eight color stops, opacity and OKLab blending, then copy the CSS.CSS Box Shadow GeneratorDesign a CSS box-shadow with sliders for offset, blur, spread, color and opacity, stack up to five layers, try inset shadows and copy the code.Favicon GeneratorCreate a favicon from text or emoji at 16, 32, 64, and 180 pixels.Emoji PickerSearch more than 1,200 emojis by name, keyword, or category.

SEO and website file generators

Write meta and Open Graph tags and preview how a link will look when it is shared, then generate robots.txt (including rules for AI crawlers), sitemap.xml and Apache .htaccess files.

Meta Tag GeneratorGenerate HTML meta tags for SEO, Open Graph and X (Twitter) cards with live Google and social previews, then copy the code into your page head.Open Graph PreviewPreview how your link appears on X, Facebook, and LinkedIn from your Open Graph meta tags.robots.txt GeneratorBuild a valid robots.txt with allow and disallow rules, sitemap lines, a WordPress preset and one-click blocking of GPTBot, ClaudeBot and other AI crawlers.XML Sitemap GeneratorTurn a list of URLs into a valid sitemap.xml with per-page lastmod dates and checks for bad lines, duplicates and the 50,000 URL limit..htaccess GeneratorGenerate an Apache .htaccess file for HTTPS, www or non-www, 301 redirects, gzip, caching, SPA routing, hotlink protection and custom error pages.

Test data generators

Fill forms, databases and demos with fake names, emails on the reserved example.com domain by default, phone numbers, addresses, CSV rows and mock API responses, and test checkout forms with Luhn-valid test card numbers.

Fake Data GeneratorGenerate bulk fake test data: names, emails, phones, addresses, UUIDs.CSV Data GeneratorGenerate random CSV test data with custom columns for names, emails, dates, numbers, UUIDs and more, choose your delimiter, then copy or download the file.Mock API GeneratorGenerate fake REST API JSON for users, products, posts, orders, comments and todos as an array, data envelope, paginated response or json-server db.json.Fake Email Address GeneratorGenerate up to 500 fake email addresses on reserved example domains for testing forms and imports.Fake Phone Number GeneratorGenerate fake phone numbers that cannot reach anyone, in US 555 and UK Ofcom drama ranges, plus realistic formats for 11 countries and E.164.Address GeneratorGenerate random fake US, UK and Canadian addresses with correctly formatted ZIP codes and postcodes, then copy them as lines, CSV or JSON for testing forms.Credit Card Test GeneratorGenerate Luhn-valid test credit card numbers for Visa, Mastercard, Amex, Discover, JCB, Diners Club and UnionPay, plus Stripe sandbox cards and a Luhn checker.

Frequently asked questions

Do QR codes made here expire?

No. The QR code generator puts your link or text directly into the code, with no redirect service in between, so the code keeps working for as long as the link it points to works. The trade-off is that you cannot change the destination later; to point somewhere new, make a new code.

What is the difference between a QR code and a barcode?

A standard barcode such as UPC-A or EAN-13 stores a short number in a single row of bars and is read by store scanners. A QR code is a two-dimensional grid that can hold a full web address or a few hundred words of text, and most phone cameras can read it. Use the barcode generator for product labels and a QR code for links.

How long should a password be?

NIST's digital identity guidelines (SP 800-63B) call for at least 15 characters when a password is the only thing protecting an account, and longer is better. The password generator shows the entropy of each password so you can see how much each extra character adds.

Can test credit card numbers be used to buy things?

No. The numbers pass the Luhn check that checkout forms use to catch typos, but they are not linked to any bank account, so a real payment is declined. Use them only in a payment provider's test mode, such as the Stripe test card numbers the test card generator includes.

Guides

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