Generators
Create QR codes and barcodes, strong passwords and random tokens, simple invoices, business cards and certificates, and structured prompts for AI chat assistants.
11 free tools · no sign-up required
Random String Generator
Generate up to 100 random strings from letters, digits, hex or your own characters
QR Code Generator
Turn a link or any text into a QR code and save it as PNG or SVG
Barcode Generator
Make Code 128, EAN-13, EAN-8, UPC-A, Code 39 and ITF-14 barcodes
Password Generator
Create strong random passwords from 4 to 64 characters in your browser
Countdown Timer
Count down from any time or a preset, with pause, reset and a beep at the end
Random Number Generator
Pick random whole or decimal numbers in a range, with or without repeats
Random Token Generator
Generate UUID v4, hex, Base64 and API-key style tokens with Web Crypto
Invoice Generator
Fill in an invoice with line items, tax and discount and download an A4 PDF
Business Card Generator
Design a simple business card and download it as a 1050 × 600 px PNG
Certificate Creator
Make a printable certificate and download it as PNG or A4 PDF
Prompt Template Builder
Fill in a template and copy a structured prompt for ChatGPT, Claude or Gemini
About these tools
The generators turn a few inputs into something you can download or copy straight away: a QR code for a link or Wi-Fi network, a barcode for a product label, a password or UUID, a PDF invoice or certificate.
Passwords, tokens and random strings are generated with your browser's cryptographic random number generator, and nothing you generate is sent to FlexyPdf. Documents such as invoices and certificates are built as PDF files on your device.
Typical uses
Examples of everyday tasks these tools are built for.
Small businesses
Making a simple invoice PDF, product barcodes or a QR code that links to a menu or payment page.
Developers
Generating UUIDs, API-key-style random strings or test data.
Teachers and event organisers
Creating certificates of completion or a countdown to an event.
Frequently asked questions
Are generated passwords stored or logged?
No. They are created in your browser with the Web Crypto API and are never sent over the network.
Do the QR codes expire?
No. A QR code is just an image of the text or link you entered. It keeps working for as long as that link or information stays valid.