This thermal filter remaps your photo’s brightness into classic heat-camera palettes like Ironbow, Hot Metal, and Arctic. Brighter areas read as “hotter,” darker areas as “cooler.” Everything runs in your browser—your images are never uploaded.
Turn Photos Into a Thermal Heat Map Online
Fake heat-vision color maps from brightness—fast, free, and private
Drag and drop files here or click to select
Workshop
Result
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How to Use?
- Upload a photo or drag and drop it into the box
- Choose a heat palette (Ironbow, Hot Metal, Arctic, Rainbow, White Hot, or Black Hot)
- Adjust contrast and softness to shape the heat look
- Click “Apply Thermal Filter” to render the result
- Download your thermal image as a PNG
Notes:
- This is a stylistic false-color effect, not a real infrared or temperature measurement.
- High-contrast photos usually produce clearer “hot” and “cold” regions.
- Increase softness for a blurrier, more camera-like thermal look.
- Very large images are resized for smoother processing in the browser.
- Your photos stay on your device—nothing is sent to a server.