Small tools that run in your browser
raondev.app is a small series of single-purpose web tools. Each one does one job, works without an account, and does its work on your device instead of on a server.
The tools
Each tool has its own section and works on its own. This page is just the front door.
Make QR codes for links, contact cards and Wi-Fi. Pick your colours, download PNG or SVG.
Combine PNG and JPEG images into one PDF, without uploading them anywhere.
Resize JPG/PNG images to a maximum file size and exact pixel dimensions, then verify the output.
Start with a real use case
Share a menu or link
Try a standard URL QR code with a clear quiet zone.
Open URL exampleSet up guest Wi-Fi
Use fictional data first, then replace it with your guest network before downloading.
Open Wi-Fi exampleAdd a contact to a business card
Compare a small contact card with a more detailed vCard before you print.
Open vCard exampleWhat every tool here follows
Your input stays on your device
The work happens in your browser. There is no upload step, so there is nothing on a server to leak, log or be asked for later.
No account, ever
No sign-up, no email, no free tier that expires. You open the page and use it.
One job per tool
A tool that tries to do everything is hard to use and hard to trust. Each one stays small enough to understand in a minute.
Fast and static
Every page is pre-built and served from the edge. No spinner while a server thinks about your request.