Art and design tools
A practical toolset from color decisions and drawing aids to print-file preparation and artwork sales logistics.
Color, drawing aids, print sizing, and artwork sales preparation in one art app.
Art app structure
Color, drawing, print, and sales-prep functions are available as tools you can open directly.
Color tools
Palette extraction, color mixing, contrast checks, color-vision simulation, gradients, and palette references.
Image color palette extractor
Analyze a photo in the browser and extract representative HEX colors with rough proportions.
Color mixing calculator
Mix two screen colors by ratio and calculate the additive-result HEX value.
Color contrast checker
Calculate WCAG AA/AAA contrast using gamma-corrected sRGB relative luminance.
Color blindness simulator
Preview a color or image through approximate protanopia, deuteranopia, and tritanopia matrices.
Gradient generator
Create CSS gradients from color stops, type, and angle controls.
Random color palette generator
Generate HSL-based random palettes and lock colors you want to keep.
Brand color palette generator
Build a HEX palette from a base color with complement, tint, shade, and muted support colors.
Seasonal personal color palette
Compare sample palettes for spring warm, summer cool, autumn warm, and winter cool.
Tint, shade, and tone generator
Create tint, shade, and muted tone steps from one base color for UI or illustration work.
Traditional color search
Search sample traditional Korean color names, tags, and reference HEX values.
Famous painting palette search
Browse moodboard-friendly palette references inspired by well-known paintings.
Skin tone palette generator
Generate light and dark steps around a base color for figure painting references.
Watercolor palette composer
Compose a softer watercolor palette from a base and support color.
Oil paint substitute search
Search common oil paint names and practical substitute-mixing hints.
HEX, RGB, HSL, CMYK conversion and harmonies
HEX, RGB, HSL, CMYK conversion and harmonies
Paint color mixing guide
Paint color mixing guide
Drawing and painting
Image guides, line-art and value conversion, perspective and proportion aids, croquis timing, prompts, and printable grids.
Canvas ratio calculator
Calculate artwork aspect ratio and find nearby F/P/M/S canvas standards.
Golden ratio composition guide
Overlay golden-ratio and rule-of-thirds guides on an image.
Grid drawing generator
Add an even drawing grid over a reference photo and save it as PNG.
Photo to line art converter
Convert a photo to line-art style PNG with approximate Sobel edge detection.
Value posterizer
Posterize a grayscale photo into 3-8 value steps.
Pixel art converter
Convert an image into a low-resolution, limited-palette pixel-art preview.
Perspective vanishing point guide
Generate one-point or two-point perspective guide lines on canvas.
Face proportion guide
Display classic drawing-guide proportions for the face.
Figure proportion calculator
Calculate head length and body segments from height and head-count ratio.
Croquis pose timer
A repeat countdown timer for 30-second to 10-minute croquis practice.
Random drawing prompt generator
Combine subject, situation, and style words into drawing prompts.
Character design prompt generator
Combine appearance, personality, and background into a visual character brief.
Comic speech bubble generator
Render speech, thought, and shout bubbles as canvas PNG.
Dot and isometric grid generator
Generate printable dot or 30-degree isometric grid images.
Symmetry drawing tool
Draw reflected or rotational strokes on canvas, undo them, and export a PNG.
Mandala pattern generator
Generate radial mandala patterns from symmetry count and seed.
Stencil image generator
Convert an image into a high-contrast black-and-white stencil style.
Paper size and resolution calculator
Convert A-series or custom paper sizes to pixel dimensions by DPI.
Pencil hardness chart
Compare hardness and drawing uses from 9H through 9B.
Brush and canvas size recommender
Recommend broad, mid, and detail brush widths from canvas size.
Art material quantity calculator
Estimate baseline gesso and paint quantities from canvas area.
Mural paint calculator
Mural paint calculator
Print and art sales
DPI, photo print sizes, frames, mats, bleed, poster standards, labels, numbering, and shipping prep.
DPI and print size calculator
Calculate printable cm/inch size from pixel dimensions and print DPI.
Photo maximum print size calculator
Convert photo resolution into maximum print sizes at 300, 240, and 150 DPI.
Frame size recommender
Recommend nearby Korean and international standard frame sizes from artwork dimensions.
Mat board size calculator
Calculate mat board outer size and window opening from artwork size and border.
Print bleed calculator
Add bleed and safe-zone margins to trim size to calculate file dimensions.
Poster size converter
Add bleed and safe-zone margins to trim size to calculate file dimensions.
Artwork label generator
Draft a wall-label structure for artwork title, year, size, and medium.
Exhibition number generator
Generate consistent artwork numbers and label drafts for an exhibition.
Canvas weight calculator
Estimate canvas and packed shipping weight from artwork area.
Art shipping box calculator
Calculate recommended inner shipping box size with padding allowance.
Artwork pricing calculator
Artwork pricing calculator
Gallery commission calculator
Gallery commission calculator
Aspect ratio crop preview
Aspect ratio crop preview
Related existing tools
Frequently asked questions
Do image tools upload files to the server?
No. This first pass processes images in the browser with canvas and does not send uploaded images to the server.
Are color and print calculations exact?
Formula-based tools use standard calculations, but real pigment, printer, paper, and monitor conditions can change the final result.
Why are duplicate functions linked instead of rebuilt?
When the same calculation or feature already exists, the Art app exposes the existing URL instead of creating a duplicate page.