Deliver faster images

Image Optimizer

Free application for optimizing images for websites, shops, and campaigns.

Download Source code

Image Optimizer

Prepare images for websites, shops, and campaigns

Processing chains

Drag and drop for size, format, quality, filters, crop, watermark, upscaling, EXIF, and renaming.

Batch and formats

Batch processing with input formats JPEG, PNG, WebP, TIFF, GIF, AVIF, SVG reading, and PDF extraction. Output as JPEG, PNG, WebP, TIFF, or AVIF.

Eight named filters

Blur, Sharpen, Grayscale, Sepia, Vintage, Noir, Warm, and Cool with adjustable intensity, brightness, contrast, and saturation.

Crop and rotation

Aspect-ratio presets 1:1, 16:9, 9:16, 4:3, and 4:5 with X/Y offset, plus rotation in 90-degree steps (0, 90, 180, 270) and horizontal and vertical flip.

AI upscaling and combiner

Real-ESRGAN models for 2x and 4x scaling, combining multiple images or PDF pages, and watermarks with live preview.

Files and renaming

Batch rename with variables {original_name}, {counter}, {date}, {time}, {year}, {month}, and {day}. Preserve or flatten directory structure, include or exclude subfolders, and optionally copy non-image files.

Technical specs

Concrete filters, presets, and variables.

Image Optimizer works with named filters, fixed aspect ratios, defined rotation steps, and variables for batch renaming.

Filters (adjustable intensity)

  • Blur, Sharpen, Grayscale, Sepia
  • Vintage, Noir, Warm, Cool
  • Brightness, contrast, saturation

Crop and rotation

  • Aspect ratios 1:1, 16:9, 9:16, 4:3, 4:5
  • Custom dimensions with X/Y offset
  • Rotation 0, 90, 180, 270 degrees
  • Horizontal and vertical flip

AI upscaling

  • Real-ESRGAN models
  • 2x and 4x scaling
  • UpscalerJS under the hood

Batch-rename variables

  • {original_name} - filename without extension
  • {counter} - sequential number with padding
  • {date} - YYYY-MM-DD
  • {time} - HH-mm-ss
  • {year}, {month}, {day}

File management

  • Preserve or flatten directory structure
  • Include or exclude subfolders
  • Optionally copy non-image files
  • Smart subfolder organization

Formats and engine

  • Input: JPEG, PNG, WebP, TIFF, GIF, AVIF, SVG, PDF
  • Output: JPEG, PNG, WebP, TIFF, AVIF
  • libvips for performance
  • Sharp.js and pdf-poppler
  • Preserve or remove EXIF