Image Denoise Tool
Suppress speckles and small color variations with an adjustable median filter while comparing the original and processed image side by side.
Upload a noisy image to compare the original with an edge-aware median-filtered result.
Edge-aware median filtering
Replace each pixel with the neighborhood median to remove impulses while retaining stronger boundaries.
Three filter strengths
Use 3×3, 5×5, or 7×7 neighborhoods for light, medium, or strong smoothing.
Adjustable result blend
Mix the filtered pixels with the original to recover texture after stronger denoising.
Как это работает
- 1
Upload a noisy image
Choose a low-light photo, scan, screenshot, or image with visible speckles.
- 2
Set strength and blend
Increase the filter window carefully, then reduce the blend if fine detail becomes too smooth.
- 3
Compare and download
Review both previews and save the processed result as PNG.
When median denoising works best
Median filters are especially effective on salt-and-pepper noise because isolated extreme pixels are replaced by a typical nearby value. They can also soften light grain, but strong settings may remove small textures. Start with the 3×3 window and increase it only when visible noise remains.
Часто задаваемые вопросы
Can this recover details lost to blur?
No. Denoising suppresses local variation; it cannot recreate detail that was not captured.
Why is the preview resized?
Large images are limited to keep the browser-based median filter responsive.
Загружено ли мое изображение?
Нет. Ваше изображение останется в вашем браузере.
Image Denoise Tool last reviewed: Sep 6, 2026.