Image to Sketch Converter

Upload any photo (JPG, PNG, WebP up to 10MB), select your sketch style and the tool automatically converts it. The algorithm uses grayscale conversion, color invert, Gaussian blur and Color Dodge blending — the same technique professional photo editors use for pencil sketch effects. All processing happens in your browser using Canvas API — your photo never leaves your device.

Eight styles are available — Pencil gives a classic grey pencil drawing look, Charcoal creates bold dark strokes, Ink Bold produces strong black line art, Blue Ink simulates ballpoint pen or technical pen, Red Sketch creates a red pencil or crayon effect, Sepia gives a vintage warm tone, Green creates a marker-style drawing and Purple gives an artistic violet ink look.

For portraits use Pencil or Charcoal with 40-60% intensity and detail level 3-4. For architecture and landscapes try Ink Bold with 60-80% intensity for dramatic lines. Higher detail level captures finer lines but may add noise. Higher intensity makes strokes darker and more defined. Adjust Brightness and Contrast to get the right balance for your specific photo.

Compare view shows the original photo and sketch side by side with a slider divider. Click Compare tab in the result and drag the slider left or right to reveal more of the original or sketch. This helps you judge the quality of the sketch effect before downloading. Sketch tab shows only the final result and Original shows only the source photo.

Yes — completely private. All image processing happens entirely in your browser using JavaScript Canvas API. Your photo is never uploaded to any server, never stored anywhere and never sent over the internet. You can even use this tool while offline after the page loads. The lock icon in the result confirms local processing.

Download is available as PNG format which preserves the best quality. The output resolution matches your input image up to 1600px on the longest side. For larger images they are automatically scaled to 1600px for processing speed. Use the transparent background option for PNG with no background — useful for overlays and design work.