Written guide

How to Take a Consistent Tongue Photo

Improve image consistency without treating a photograph as a clinical test.

  1. 1

    Use neutral light

    Stand near indirect daylight. Avoid colored lamps, hard shadows, flash glare and beauty filters.

  2. 2

    Keep the lens clean

    Wipe the lens and use the rear camera when practical. Do not digitally zoom.

  3. 3

    Relax the tongue

    Extend it gently and briefly. Forceful extension can change shape and color.

  4. 4

    Frame the full surface

    Include the tip, center, sides and visible root without including unnecessary identifying detail.

  5. 5

    Check focus

    Keep the camera steady and choose a sharp image without motion blur.

  6. 6

    Compare conditions

    If tracking over time, use a similar time, distance, angle and light.

Privacy reminder

An accepted image is uploaded to Azure Blob Storage for analysis. The API requests deletion when analysis finishes, but permanent deletion is not guaranteed. Avoid including other identifying detail.

Read the full privacy policy
Start an educational tongue check