Free Generators Online
Generate QR codes, passwords, barcodes, lorem ipsum, certificates, invoices, business cards, random numbers, hashtags, and other useful artefacts — instantly and offline-capable.
13 free tools — browser-based, no sign-up required.
Random String Generator
Generate random strings and tokens
QR Code Generator
Generate QR codes for any text or URL
Barcode Generator
Generate barcodes in various formats
Password Generator
Generate strong, secure passwords
URL Shortener
Shorten long URLs
Countdown Timer
Create countdown timers for events
Random Number Generator
Generate random numbers in any range
Random Token Generator
Generate random tokens and UUIDs
Invoice Generator
Create professional invoices
Business Card Generator
Design business cards online
Certificate Creator
Create custom certificates
Certificate Generator
Generate SSL and test certificates
Hashtag Generator
Generate relevant hashtags
About FlexyPdf Generators
Generators turn a set of parameters into a finished artefact. They sound simple but the quality difference between "generates a thing" and "generates a thing you can actually use" lies in the details: a password generator that produces patterns crackable in seconds, a QR code that scans 90% of the time, a lorem ipsum block that breaks layouts because no line is shorter than 80 characters. The generators here are tuned for the output quality, not just the act of producing something.
The password generator uses the browser's Web Crypto API for entropy (not Math.random) and lets you specify length, character classes, and forbidden characters (for systems with picky validation rules). It also supports passphrase mode using a curated word list, which is easier to type and remember than a random string. The QR code generator produces scannable codes at any size with error-correction levels you can configure — important for codes printed on physical products that may get scratched.
For business artefacts, the invoice and business card generators produce print-ready PDFs with customizable layouts, the certificate generator handles certificate-of-completion style documents with seal and signature placement, and the barcode generator supports the common 1D formats (UPC, EAN, Code 128) with print-quality SVG output. The hashtag generator suggests relevant tags by topic and platform, useful for social media posts but no substitute for an actual content strategy.
Who uses these tools
A few of the recurring use cases we hear about from FlexyPdf visitors.
Security-conscious users
Generating cryptographically random passwords for new accounts, creating passphrases that meet entropy requirements without being unmemorable.
Small business owners
Producing professional invoices, business cards, and certificates without expensive design software.
Restaurant and retail operators
Generating QR codes for menus and product pages, printing barcodes for inventory items.
Designers and developers
Filling layouts with lorem ipsum placeholder text in specific shapes (short sentences, long paragraphs, mixed) without copy-pasting from a stale text file.
Frequently asked questions
How random is the random password generator?
It uses crypto.getRandomValues from the Web Crypto API, which is suitable for cryptographic use. Math.random is explicitly avoided. Each password is generated independently in your browser — nothing is logged or stored.
Can I customize the look of generated invoices and business cards?
Yes — both let you set colours, fonts (within a curated list), logos (uploaded locally), and layout variants. Output is a downloadable PDF.
Do the QR codes expire or require an account to work?
No. They are static QR codes encoding the URL or text you provided. They work forever as long as the target URL is still valid.