Lesson 3 — Tagging Photos
Tagging is where raw photos become useful data. A tag is a box drawn around something in a photo, plus a label saying what that something is.
When do I tag?
Whenever a card in the Feed shows the label button, that photo is waiting for a tag. Tap the button and the tagging screen opens with the photo full-screen.
Drawing a box
- Find the subject. Look for the object the campaign cares about — a dish, a garment, a sign.
- Drag to draw. Touch one corner of the object and drag to the opposite corner. A colored box appears.
- Adjust if needed. A good box is snug: it contains the whole object with as little background as possible.
You can add more than one box to the same photo — if there are three falafel sandwiches, give each its own box.
Picking a label
After drawing a box, the label picker slides up. Choose the label that best matches what's inside your box. Labels come from the campaign itself, so the list is always relevant to the theme.
Tip: pick from the list. The list is the shared vocabulary of the campaign — using it keeps everyone's tags consistent and makes your tag possible to verify.
What makes a great tag?
- Tight boxes. Hugging the object, not floating around it.
- Right label. If you're not sure what something is, skip it — a wrong label hurts more than no label.
- One box per object. Don't wrap two objects in one box.
- Whole object. Include the parts that are partially hidden if you can tell where they are.
Submitting
Tap Submit when every box has a label. Your tags are sent off and enter the community review queue with a pending status. From here, other contributors will see your work in their feed and vote on it — that's the next lesson.
You can always revisit and track your submitted tags under Profile → My Tags.
Next: Validating Tags — the community's quality filter.