Free Online Dehaze Tool — Remove Haze & Fog from Photos Instantly
Easily remove haze, fog, and atmospheric blur from your photos with our free online dehaze tool. The algorithm intelligently analyzes each image to restore lost contrast, boost color saturation, and reveal detail hidden by haze. Perfect for clearing up landscape photos taken on hazy days, improving aerial and drone photography, restoring old scanned photos with haze artifacts, or enhancing underwater images affected by light scattering. All processing happens in your browser for complete privacy.
Upload one or multiple hazy images by dragging them onto the upload area or clicking to browse your files. Batch upload supported.
Each image is dehazed automatically as it loads — no settings or adjustments needed. The results appear in the list instantly.
Download each image individually, or click Download All to save everything as a single ZIP archive. Remove any unwanted images with the delete button.
Tips for Using Dehaze
- Dehaze works best on images with visible atmospheric haze — distant mountains, city skylines on foggy days, or aerial photos. The algorithm restores contrast and color simultaneously.
- For severely hazy images, one pass may not fully clear the image. Simply download the result and re-upload it for a second dehaze pass to progressively improve clarity.
- Dehaze naturally boosts saturation as part of its haze removal. If the result looks oversaturated, you can use the Saturation adjustment tool to fine-tune after dehazing.
Frequently Asked Questions — Dehaze / Defog
Is the dehaze tool really free?
Yes, completely free. No registration, no hidden charges, no watermarks, and no file size limits. All processing happens locally in your browser — your images never leave your device.
How does the dehaze algorithm work?
Our dehaze algorithm uses a three-step process: 1) Contrast restoration — it stretches the luminance histogram to recover the tonal range flattened by haze. 2) Color vibrancy restoration — haze scatters blue light more, so the algorithm rebalances colors and boosts saturation by approximately 35% to compensate for haze-induced desaturation. 3) Gamma adjustment — it slightly brightens midtones to bring back detail lost in hazy bright areas. The combined effect is a natural-looking haze removal that preserves image quality.
Does dehaze require any settings?
No! Our dehaze tool works fully automatically. Simply upload your images and the haze removal is applied instantly. This makes it perfect for batch processing multiple photos taken in similar hazy conditions.
What image formats are supported?
JPG, PNG, WebP, BMP, AVIF, GIF, TIFF, SVG, HEIC and more. The dehazed result is saved in your original upload format, preserving compatibility.
Can dehaze fix any type of atmospheric blur?
Our tool is designed for images affected by atmospheric haze, fog, or mist — where the entire scene has a uniform loss of contrast and color saturation. It works well on landscape photos, cityscapes, and aerial shots. For localized fog or steam effects (e.g., fog around a single object), the result may be less uniform. The tool also works well for improving underwater images where light scattering causes similar contrast and color loss.
Will dehazing reduce image quality?
No. The dehaze operation is a per-pixel contrast and color adjustment that preserves full image resolution and detail. No compression, resampling, or interpolation is involved. The algorithm enhances the existing image data to reveal detail already present but obscured by haze.
How large of an image can I process?
Our tool handles images up to 50 megapixels (50,000,000 pixels total). If an individual image exceeds this limit, you'll see a warning and can try a smaller version. Batch processing supports multiple images at once.