Radionica
Our own project, not client work. A small business owner can shrink an image for their website or make a QR code for a menu or a WhatsApp link on their own, as long as they have a tool they do not have to send their photos and phone numbers to. Radionica offers three such tools and five lessons you can mostly do on a phone.
- Our own project
- September 2026
- 2 min read
- Astro 7
- Web Worker
- Rough Notation
- rough.js
- Customer
- Our own project, no client
- Theme
- Practical lessons and tools for small businesses
- Tools
- Image compression, QR code, WhatsApp and Viber link
- Technologies
- Astro 7 · Web Worker and WASM encoder · Rough Notation · rough.js
- Privacy
- Analytics only with consent, the tools send nothing
- Mobile PageSpeed
- 94 out of 100, measured on October 15, 2026
- Website
- digitalnaradionica.com
- Status
- Live on our domain, launched September 28, 2026
01 / 04
Three tools on the desk
Radionica is our site with tasks a small business owner can do on their own. There are three tools on the desk: image compression for a website, a QR code for a link, a Wi-Fi network or a business card, and a WhatsApp and Viber link with a ready-made message. The link tool checks the number first, for example that no zero was left after +381.
02 / 04
Five lessons for the phone
The lessons cover images for a website, photographing products with a phone, short videos, WhatsApp Business and a QR code for a menu. Each one starts with a list of what you need and ends with a short check, and the figures in them come from official documentation, with a link and the date they were checked. The examples come from websites we have built.
03 / 04
The image is processed in the browser
Compression runs in the browser. The visitor picks the intended use, and the tool changes the width and looks for the highest quality at which the image still fits under the target size. When the browser supports it, processing runs in a Web Worker, so the page stays responsive while the quality is being found. The browser itself creates the WebP, and Safari and iPhone, which cannot do that, get a WASM encoder from the same domain, loaded only when needed. The new image is built from pixels, so it carries no camera metadata.
The same goes for the QR code and the link: the photo, the Wi-Fi password and the phone number never reach our server and are not kept after the tab is closed.
04 / 04
A pencil drawing
The site looks like a desk covered in kraft paper, with pinned-up cards and handwritten notes. The sketches of the tools and the desk are drawn by rough.js, but at build time and with a fixed seed, so the drawing is the same on every load and the browser runs no script for it. Underlines, circles and highlighter marks over the text are drawn by Rough Notation, which loads only when the first mark is needed.
The site is static, built with Astro 7, with no ads, and analytics run only with consent. Inquiries are sent through the form on the Contact page, protected by a Cloudflare Turnstile check that loads only on submit.
On a phone
The same site, in your hand.
Most visitors come from phones, so the layout, buttons and images are arranged for the small screen first.
Questions
What clients ask.
Is Radionica a client site?
No. It is our own site: we create and maintain the lessons and tools, and inquiries come in through the contact form on the site itself. It was not commissioned by any company.
Do the tools send images to a server?
No. Compression, QR codes and WhatsApp and Viber links are made in the browser, so photos, passwords and phone numbers never reach our server.
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