Baby Reveal QR Code
Everyone scans at the same moment — and the announcement appears on every screen at once. The news is encoded inside the code as a hidden message, so there is no website to leak, no post to screenshot, and no internet needed at the party. The confetti frame does the celebrating; your browser proves the code scans before you print a single copy.
Keepsake print checklist
- Keep the white margin around the code — it is the quiet zone scanners need, not empty space to crop.
- Size for the moment: 2 × 2 cm of code is the floor for cards and tags; photo-woven codes reward 4 cm or more; distant reveals want one tenth of the scanning distance.
- Matte paper over gloss — glare is the most common keepsake scan failure.
- Scan a test print with a real phone before the moment that matters.
A worked example, rendered by the real engine
Built when this page was built, by the same engine as the tool above — confetti frame, untouched code panel, and the announcement itself inside the modules. Scan it from the screen (no internet needed) and it says:
It's a girl! Welcome, baby Quinn - arriving this October.
Version 6 at 41×41 modules, error correction H — decoded directly from the artwork.
Choreographing the scan-together moment
- Seal the codes. One printed card per guest (or per couple), face-down or in envelopes. The code is readable by any camera at any time — secrecy comes from paper, not pixels.
- Run a decoy round. Hand out a practice code first — encode "Not yet! Dessert first." — so every phone has proven it can scan before the real moment. This de-risks the reveal better than any test you run at home.
- Count down, scan together. Phones up, three-two-one. The message appears on every screen simultaneously — and the cards go home as keepsakes afterward.
- Keep one uncut sheet. The framed artwork with the caption makes a nursery print later: the code that told everyone.
Print sizing for party pieces
- Guest reveal cards: A6 (10.5 × 14.8 cm) with the code at 3–4 cm scans instantly at hand distance. The framed artwork fits A6 naturally.
- Cupcake toppers and favor tags: keep the code itself at 2.5 cm minimum — below that, party lighting and frosting-adjacent smudges start costing scans.
- The one big board: a single A4/A3 print by the cake lets latecomers scan. Rule of thumb: the code should be at least one tenth of the farthest scanning distance.
- Always keep the white margin. The quiet zone around the code is part of the symbol — trimming it to the frame art is the most common self-inflicted scan failure.
Baby reveal code FAQ
Can someone scan the code early and spoil the reveal?
Anyone who scans it sees the message — a QR code hides nothing from a camera, it only hides it from eyes. Keep the printed codes face-down, in envelopes, or hand them out at the moment itself. A classic trick: give everyone a sealed envelope at the start of the party and count down to a simultaneous scan.
Does the reveal need internet at the party?
It depends which of the two message modes you choose. A reveal link opens a page on this site that shows the announcement — it reads on every phone, but the party needs a signal. An offline note writes the words into the code itself and needs no connection at all, but be aware that iPhone and Google Lens have no way to display bare text and may offer a web search instead; it reads properly on Samsung phones and in scanner apps. Either way the words are also printed on the card, so a backyard, a park or a barn with no signal still works.
What should the message say?
Short and punchy scans best and reads best: "It's a GIRL! Baby Quinn arrives in October." You have room for much more, but every extra character makes the grid denser — keep it under a couple of hundred characters and the code stays chunky and effortless to scan across a party table.
Will it work on grandparents' phones?
Any phone camera from roughly 2018 onward scans QR codes natively — just open the camera and point. For older devices, any free QR reader app works. Print the code at 3 cm or larger and the party's oldest phone will manage; do one test scan with the least techy relative's phone beforehand.
Is the reveal uploaded anywhere before the party?
No. The message is encoded, drawn, and decode-verified entirely in your browser — nothing is transmitted, stored, or posted. Until the first person scans a print, the news exists only on paper in your hands.
More scan-to-reveal ideas: make the boy-or-girl moment itself a gender reveal code (even you can stay surprised), run the whole party as a QR treasure hunt ending at the reveal, put a message-in-code gift tag on the grandparents' announcement box, or weave the first ultrasound photo into a photo keepsake code.