QR code (Quick Response code)

What is a QR code

A QR code (Quick Response code) is a square two-dimensional barcode that a phone camera reads to open a link, show text or save a contact. For surveys, it takes people from a poster, receipt, table card or slide straight to the questions.

The code stores data in small dark and light squares, and three larger squares in the corners help the camera find it. Error correction lets a code scan even when part of it is damaged or covered by a logo: level L can restore about 7% of the data, M 15%, Q 25% and H 30%.

How it works in SurveyNinja

• After you publish a survey, go to Share, then QR code. It works on every plan.
• Choose PNG for screens or SVG for print, set the colors and the style of dots and corners, and pick a size from 512 to 4096 px.
• Add a logo (PNG, JPG or SVG up to 1 MB) and a caption under the code. The logo uses file uploads, so it isn't available on Free.
• Print sends the code straight to an A4 sheet, a 90×50 business card or a 5×5 sticker.
• Each unique link (Standard and higher) gets its own QR code, so you can compare responses by place.

Help: QR code and printed survey and Unique survey links.

Tips

• The code holds the survey link, so you can edit the questions after printing. Changing the name in the workspace address breaks printed codes.
• Keep the code darker than the background, and use error correction Q or H with a logo.
• Test the printed code with two or three phones before a large print run.
• Add a line saying what happens after the scan, for example "Scan to rate your visit".