Press and drag with your mouse or finger to paint. A single tap leaves a dot. Pick a BRUSH FEEL below to change how your strokes look.
BRUSH
Pick a color from the palette and set the size with the slider. The "+" swatch opens a full custom color picker, and the shimmering rainbow swatch paints in flowing rainbow colors. The glowing light swatch next to it paints with living light that changes its color all by itself. The aurora swatch paints a northern-lights glow that gently sways between green, blue and violet. Your last choice is remembered next time you visit.
BRUSH FEEL
🌤 SOFT — a gentle, diffused haze, lovely for slow relaxed painting
🖋 INK — a tapered brush-pen stroke that deepens where lines overlap
🌾 CHALK — a dry, grainy pastel texture
✨ NEON — the original bright glowing light trail
🌠 STARDUST — a soft glowing trail scattered with tiny twinkling stars
💧 WATERCOLOR — translucent washes that build up, with pigment pooling at the edges and a grainy paper feel
COLORING PAGE
Open CHOOSE A PAGE and pick one of 41 detailed coloring pages — mandalas, animals, nature scenes and more. 🪣 FILL switches on automatically: tap any area to fill it with your color, or drag to paint freely with any brush. Your color always stays under the outline, and CLEAR only wipes your painting, not the page. Picking a new page starts fresh (↺ UNDO brings your painting back). Pick "✕" to hide the outline — your painting stays on the canvas as your own picture.
TOOLS
🪣 FILL — tap an area to fill it with the current color (dragging still paints with the brush). On a coloring page the outline keeps the color inside its lines; on a blank canvas it fills the shape you drew around the tap
🧹 ERASER — erase instead of draw
✨ SPARKLE — turn the glowing trail on or off
🔊 SOUND — turn ambient sound on or off (see AMBIENT SOUND below)
↺ UNDO — step back one stroke
CLEAR — wipe your painting (still undoable; the coloring outline stays)
▶ ANIMATE — replay your drawing stroke by stroke, in the order you drew it
⬇ VIDEO — record the animated replay and download it as a WEBM video
⬇ GIF — record the animated replay and download it as an animated GIF
⬇ SAVE IMAGE — download your drawing as a PNG
TEXT & EMOJI
Press 🔤 TEXT, then tap anywhere on the canvas to write a word in your current brush color. You'll be offered a set of graphic looks (NEON, GOLD, FIRE, ICE, BUBBLE, OUTLINE, RAINBOW, 3D) to style it with. Press 😀 EMOJI to open the emoji picker, choose one, then tap the canvas to drop it there. Both are added to your drawing's history, so they replay with ▶ ANIMATE and appear in your VIDEO and GIF exports too.
AMBIENT SOUND
While you draw, a soft ambient tone quietly follows your brush. It's always tuned to a calm five-note scale, so it can never sound "off" — higher up the canvas plays a higher note, lower plays a deeper one, gliding gently between them as you move. The tone pans left and right with your brush, blooms in slowly and fades out slowly when you lift your finger, and has a light touch of reverb for a soft, spacious feel. Each BRUSH FEEL gives it its own tone color — SOFT is pure and warm, INK is fuller with a slow swell, CHALK is dry and grainy, NEON is bright and shimmering, STARDUST is a glassy little chime, and erasing plays a quiet, muted note of its own. Toggle it anytime with 🔊 SOUND, and use the slider beside it to set the volume (40% by default) — both choices are remembered.
BRING THE PICTURE TO LIFE
Draw a picture (e.g. a bird), then press ➕ MARK PART and drag over a part you want to move (e.g. a wing). Choose a motion — FLAP, SWAY, SPIN, BOB, PULSE (gentle breathing), FADE (soft opacity breathing), DRIFT (slow floating), or TWINKLE (a soft flicker, lovely for stars). Add as many parts as you like and hit 🦋 LIVE — the rest of the picture stays still while the marked parts move around the point where they're "attached" to the body.
THEMES
Pick a THEME from the row above the canvas to change the background mood, including the calm ZEN theme. It doesn't change your brush color.
SYNTHLUCIDA CANVAS
FREE ONLINE DRAWING APP — PAINT WITH LIGHT
COLORING PAGE
Pick a page, then tap areas with 🪣 FILL or paint with any brush — your colors always stay under the lines.
BRUSH COLOR
BRUSH FEEL
10px
VOLUME40%
TEXT & EMOJI
Write a word, pick a graphic style for it, or drop an emoji anywhere on the canvas. Turn on ✨ ANIMATE TEXT to make your words move.
BRING TO LIFE
Drag a box over part of your picture (e.g. a wing) and pick a motion — then hit LIVE to bring it to life.
DRAW WITH MOUSE OR FINGER · PICK A COLOR AND SIZE
FREE ONLINE DRAWING APP WITH GLOWING BRUSHES
SYNTHLUCIDA CANVAS is a free online drawing and coloring app that runs right in your browser — no sign-up, no install. Paint with glowing neon, stardust, soft, ink, chalk and watercolor brushes while a gentle ambient tone follows your strokes.
Choose from 41 detailed coloring pages such as mandalas, animals and nature scenes, fill areas with one tap, add text and emoji stamps, then use Bring to Life to make parts of your picture flap, sway, spin or twinkle. Export your artwork as a PNG image, an animated GIF or a WEBM video.