QR Code Generator
Planning & Utilities
QR Code Generator — a fast, free creator utility that runs in your browser. No signup, no install, and nothing you enter is stored.
QR Code Generator
Generate high-resolution QR codes. Free. No signup.
How QR codes actually work
A QR code is a grid of black and white modules that encodes data, most often a URL, in a way a phone camera can read in any orientation. The three big corner squares are finder patterns that let scanners lock on instantly. Built-in error correction means a code still scans with up to 30% of it damaged or covered, which is what lets brands drop a logo in the middle. The catch most people miss: the more data you cram in, the denser and harder-to-scan the grid becomes, so shorter links win every time.
QR code tips
- Keep the link short before encoding; long URLs add modules, shrink each square, and make the code harder to scan reliably.
- Maintain a clear quiet zone, the blank margin around the code, or scanners struggle to find the finder patterns.
- Use a static code for fixed text, but remember the destination is baked in and can never be edited later.
- High contrast matters more than colour; dark code on a light background scans far better than light-on-dark.
Related tools
QR Code Generator — common questions
Latest questions readers ask us about this topic.
What's the maximum amount of data a QR code can hold?
A QR code maxes out around 4,296 alphanumeric characters or 7,089 numeric digits at the largest version. In practice, far less is wise, since dense codes need a sharper camera and steadier hand to scan.
Why won't my QR code scan?
Usually low contrast, a missing quiet-zone margin, too much data packed in, or printing it too small. Aim for at least 2x2 cm in print, keep strong dark-on-light contrast, and shorten the encoded link.
Can I edit a QR code after creating it?
Not a static one. The data is encoded directly into the pattern, so changing the URL means generating a new code. Only dynamic codes, which point to a redirect you control, can be edited afterward.
Related questions
The sub-questions readers ask next — answered, with where to go.
Specificity and tension. A scroll-stopping opener promises a concrete payoff ('the 3-word edit that doubled my reply rate') or opens a loop the reader needs closed — not a vague 'let's talk about engagement'. Front-load it: on most feeds only the first line shows before a cut-off, so the hook has to do its work there. Test several angles for the same post; the winner is rarely the one you'd have guessed.
Style your opening lineMatch the length to the job, then check it against the limit. Instagram captions can run long for storytelling but the hook must land in the first ~125 characters before 'more'; X/Twitter rewards tight, standalone lines; LinkedIn truncates around two lines. TikTok and Reels captions are short by nature. The reliable move is to draft freely, then trim against a live counter so nothing important gets cut.
Check the limit liveFewer, and more relevant, than the old advice. The era of 30 generic tags is over — most platforms now reward a small set (roughly 3–8) that genuinely describe the post, mixing one or two broad tags with several specific, lower-competition ones. Stuffing tags reads as spammy and can suppress reach. Put them where they don't interrupt the read: end of the caption or first comment.
Read the content hubTreat the bio as a one-line pitch, not a résumé. Open with who you help and the outcome they get, add a single proof point, and close with a reason to follow or a clear next step. Keep it skimmable, lead with the words people would search, and reserve any styled text for one emphasised phrase. Links and @mentions stay plain so they stay clickable.
Generate a bioExplore the topic cluster
A wider set of tools and guides on this topic.