How to use QR Code Generator
- 1
Open the QR Code Generator
Go to tools.slaytic.com and open the QR Code Generator. No sign-up or account required.
- 2
Enter your content
Add a URL, text, or Wi-Fi details. The preview updates as you type.
- 3
Style it
Choose dot and corner styles, set colours, pick an error-correction level, and add a centre logo if you want one.
- 4
Download PNG or SVG
Take PNG for screens and documents, or SVG for print work that needs to stay sharp at any size.
- 5
Test before you print
Scan the finished code with a real phone camera, especially if you added a logo or used strong colours.
How this works in your browser
A QR code is a genuine encoding rather than a lookup: your content is converted into a bit stream, interleaved with Reed-Solomon error-correction data, and laid out into the module grid alongside the position, timing and format patterns that let a scanner orient itself. The error correction is what makes a centre logo possible, since those redundant bits can reconstruct modules the logo covers, and it is why higher levels tolerate more damage at the cost of density. All of this is computed in your browser, which is why the code has no expiry and no dependency on any service: there is no short link in the middle, and nothing to shut down. The SVG export draws the same grid as vector rectangles, so it stays exact at any print size.
QR Code Generator vs. traditional online converters
| Feature | QR Code Generator (in-browser) | Traditional online converters |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
Who uses QR Code Generator
Menus, posters and flyers
Put a scannable link on printed material that keeps working indefinitely.
Wi-Fi access for guests
Let visitors join a network by scanning rather than typing a long password.
Product packaging and labels
Add a branded code with your logo that survives print and handling.
Business cards and signage
Link to a profile, site or contact page without anyone typing a URL.
Frequently asked questions
Do these QR codes expire?
No. The content is encoded directly into the code rather than routed through a redirect service, so it works for as long as the destination is valid.
Will a center logo stop the code from scanning?
No, as long as error correction is medium or higher. The logo hides some modules, and the QR error-correction data fills in the gap - use Q or H if your logo is large.
Should I download PNG or SVG?
PNG is ready for the web and most documents. SVG is a vector, so it stays perfectly sharp at any print size - use it for posters, packaging, or professional print work.
Can I encode Wi-Fi details?
Yes, most QR scanners recognise the Wi-Fi format and offer to connect directly when scanned.
Can I change where the code points after printing it?
No, and this is the honest trade against paid dynamic QR services. The destination is encoded in the pattern itself, so changing it means generating a new code. What you gain is that it never expires, never depends on someone else’s server staying online, and cannot be switched to point somewhere else without your involvement.
Why does more text make the code denser?
Because the data is genuinely inside the pattern. A short link produces a sparse grid that scans from across a room; a long URL packs in far more modules, each one smaller, so the code needs to be printed larger or scanned closer. Shortening the destination is the most effective way to keep a code scannable at small sizes.
What error-correction level should I choose?
Medium is right for most screen and paper use. Step up to Q or H when the code carries a centre logo, or when it will be printed on packaging, outdoors or anywhere it might be scuffed, since higher levels can reconstruct more of a damaged pattern at the cost of a denser grid.
How small can I print it?
Around two centimetres square is a practical floor for a short URL scanned from close range, and larger for anything longer or read from a distance. Always test with a real phone camera before printing a run, since a code that scans on screen can fail on paper.