How to Add Fog Effect to Photo Online

Add atmospheric fog or mist to your photos online for a mysterious, moody effect — free.

Fog and mist create an atmosphere of mystery, serenity, and drama in photography. Whether it is mountain mist, coastal fog, or an eerie forest scene, the fog effect transforms ordinary landscapes and portraits into cinematic images. Add atmospheric fog or mist to any photo for free at imgresizr.com, directly in your browser.

When to Use a Fog Effect

  • Landscape and nature photography — fog adds depth and scale
  • Horror and thriller visual content — fog creates immediate unease
  • Wedding and romantic portraits — soft mist creates a dreamy, ethereal mood
  • Forest and woodland photography — mist between trees looks dramatically beautiful
  • Urban and architectural photography — fog softens hard edges and creates mood

How to Add Fog Effect at imgresizr.com

Upload your photo to imgresizr.com. Open the Filters tool and select the Fog, Mist, or Atmospheric Haze effect. Position the fog source — ground-level fog looks natural in landscapes, while an all-over haze works for portraits and close-up shots. Set the density: light mist at 20–30% creates a subtle atmospheric quality, while heavy fog at 60–80% creates a dramatic, almost impenetrable wall of mist. The colour of the fog matters: pure white fog looks like daytime mist, light grey fog looks like morning fog, and very light blue fog creates a cold, ethereal atmosphere. Combine with desaturation and cooler temperature in the Enhance tool for maximum effect. Download as JPG.

Fog Effect Colour and Density Guide

Fog TypeColourDensity
Morning mistLight grey-white20–40%
Heavy fogMid grey50–70%
Ethereal/dreamySoft white30–50%
Eerie/horrorCold blue-grey40–60%

Fog Effect Tips

  • Apply more fog in the distance and less in the foreground for natural depth perspective
  • Desaturate colours slightly after adding fog — real fog desaturates what it obscures
  • Works exceptionally well on forest, lake, and mountain landscapes
  • For portraits, keep the fog light — you want atmosphere, not invisibility

Add atmospheric fog and mist to your photos for free at imgresizr.com.