Everything You & Your Students Can Do With KnotenSVG

Instant creation of laser-ready basic shapes with configurable dimensions and corner controls.

• Rectangles: Width, height, and live rounded corner radius slider.
• Circles & Ellipses: Diameter and non-uniform axis scaling.
• Multi-Point Stars: Custom point count and inner radius depth.
• Polygons: Regular polygons from 3 to 12 sides.
• Lines & Straight Segments: Snapped angle lines with exact lengths.

Flexible path creation from intuitive sketch strokes to precise bezier node curves.

• Freehand Pencil: Natural sketching with automated algorithmic curve smoothing to minimize laser nodes.
• Bézier Pen Tool: Click to plot sharp vertices, drag for smooth cubic Bézier tangent handles.
• Path Auto-Closing: Visual indicator when cursor connects back to start node to form a watertight cut path.

Full font styling designed specifically for physical engraving and cutting.

• Curated Fonts: Google Fonts (Montserrat, Oswald, Pacifico, Bangers, etc.) loaded on demand.
• Custom Font Upload: Drag & drop local .ttf font files directly into the editor for instant use.
• Convert Text to Path: Transforms live letters into vector outlines, preserving interior counters (like the holes in 'O', 'A', and 'B') for cutting.
• Letter Spacing & Sizing: Fine metric tracking to avoid overlapping cut strokes.

Real-world millimeter workspace engineered to eliminate floating-point sizing errors.

• 1.0 mm Default Snap: Standard mode makes placing parts intuitive and error-free for kids.
• 0.1 mm Precision Mode: High-precision toggle for tight joinery, finger joints, and micro-alignments.
• Smart Dynamic Snapping: Guides snap to item center-points, bounding edges, and bed boundaries.
• Keyboard Micro-Nudge: Arrow keys move 1.0 mm; Alt+Arrow moves 0.1 mm; Shift+Arrow jumps 10 mm.

Combine simple geometric shapes to construct intricate custom objects.

• Unite / Union: Merges overlapping shapes into a single continuous outer cutting perimeter.
• Subtract / Difference: Punches the top shape out of the bottom shape (e.g. creating keyholes or window cutouts).
• Intersect: Keeps only the overlapping common area between shapes.
• Exclude (XOR): Hollows out the intersection while preserving non-overlapping bodies.
• Divide: Slices overlapping shapes into separate manageable vector pieces.

Professional outline expansion and kerf compensation with clean join algorithms.

• Outward & Inward Offset: Produce parallel offset contours at exact millimeter distances.
• Corner Join Styles: Round, Miter, or Bevel corner rendering for sticker borders.
• Simplify Path: Reduces excessive Bézier nodes on scanned art for silky-smooth laser motion.
• Flip & Reverse: Instant Horizontal/Vertical mirroring and laser path direction reversal.
• Alignment & Distribution: Center to workspace, align left/right/top/bottom, and distribute spacing.

Assign paths to distinct fabrication roles with standard color conventions.

• Through Cut Layer: Vector cutting lines rendered in sharp laser red.
• Engrave Layer: Raster filling paths rendered in solid black.
• Score / Vector Line Layer: Surface marking & crease lines rendered in electric blue.
• Custom Layers: Add and name unlimited extra layers for multi-pass jobs.
• Lock & Hide: Protect finished parts or isolate specific layers during editing.

Pre-tested laser speed, power, and air-assist settings for common makerspace machines.

• Tested Machines: Ruida CO2 (50W–80W), xTool (D1, M1, P2), Glowforge, FLUX Beamo, and diode lasers.
• Stock Materials: 3mm & 4mm Birch Plywood, MDF, Acrylic, Cardboard, Paper, and Vinyl Foil.
• Role Parameters: Speed (mm/s), Min/Max Power (%), Passes, Air Assist on/off, and Line Interval (mm).
• Community Laser Profiles: Export or import shared profile files between school labs.

Seamless export to major cutting hardware without requiring expensive intermediate software.

• LightBurn (.lbrn2): Direct export with all cut layers, speeds, powers, and air assist pre-mapped to LightBurn's cut palette!
• Brother ScanNCut (.fcm): Native binary cutting file generation with 88×88 BMP thumbnails and 12×12" or 12×24" mats.
• Clean Production SVG: Millimeter-accurate SVG with no bloated tags; runs in RDWorks, Glowforge UI, and Inkscape.
• KnotenSVG JSON: Portable project bundle saving layer hierarchies, history, and canvas state.

Visualizes how vector lines behave when cut into physical sheets of material.

• Birch Plywood: Natural wood grain textures with realistic dark charred kerf cut edges.
• MDF Board: Warm fiberboard texture with authentic laser depth shading.
• Clear Acrylic: Realistic translucent glass effect with refraction, specular edge sheen, and shadow depth.
• Blue Acrylic: Vibrant translucent colored acrylic simulation.
• Engrave Fill Simulation: Toggle to render engraved areas with genuine laser scanline textures.

Visualizes both meaningful products that come out of vinyl and foil cutting jobs.

• Piece A (Cutout Stencil): The outer boundary with letters weeded out, keeping inner letter counters (like 'O', 'D', 'A') as foil via even-odd winding rules.
• Piece B (Sticker Decals): The weeded letter/shape decals rendered side-by-side on the carrier sheet with drop shadows and cut highlights.
• 4 Weeding Modes: Both Shapes (default), Cutout / Stencil, Stickers / Decals, and Uncut Sheet.
• Foil Colors: Red, Green, Blue, or any custom color via hex picker.

Distraction-free presentation view for group critiques and student design inspections.

• Camera Auto-Fit: Automatically zooms and centers all artwork comfortably with protective margin padding.
• Carrier Sheet Grid: Carrier backing paper with calibrated centimeter grid lines.
• Minimal UI: Streamlined modal overlay with direct access to material gear settings and quick toggles.

Zero friction setup designed to satisfy European school privacy regulations.

• No Accounts Needed: Students never enter an email address, password, or real full name.
• 4-Character Class Code: Teachers generate a code (e.g. A7X9); students submit with just a first name or nickname.
• Automatic 30-Day Purge: Inactive classroom workspaces and student SVGs automatically delete after 30 days to avoid long-term data liabilities.
• Salted Passphrases: Teachers protect their management dashboard with a hashed master passphrase.

Real-time incoming queue of all student submissions with automated thumbnail previews.

• Live Auto-Refresh: Submissions appear instantly on the teacher's screen as students click "Send to Teacher".
• Version History Drawer: Students can iterate and resubmit; teachers can view timestamps and restore previous revisions.
• 3-State Color Workflow: Track progress with one-click status dots: To Do (Blue), Retry / Needs Help (Orange), and Done / Cut (Green).
• 1-Click Student Project Open: Teachers can open any student's project directly into the KnotenSVG editor to fix cut lines or guide learning.

Dedicated high-visibility interface built for classroom smartboards and video projectors.

• Split-Screen Layout: Live incoming student feed on the left; giant high-resolution "Hero Spotlight" on the right.
• Classroom Critiques: Click any student's card to spotlight their design for group discussions, peer feedback, and celebrating student progress.
• Large Classroom Code: Bold class code prominently displayed in the corner so students can always see where to send work.

Solves the teacher's biggest challenge: packing 25 student projects onto a single laser sheet.

• 2D MaxRects Bin Packing: "Space-Efficient Ultra" algorithm packs whole cohesive student project units with minimal waste.
• Shelf Packing with Names: "Space-Efficient Lite" arranges projects into rows with student nicknames automatically engraved above each part!
• Custom Laser Sheet Dimensions: Enter your exact laser bed size (e.g. 600×400mm) and part spacing margin (mm).
• Multi-Sheet Pagination: Automatically paginates across Sheet 1, Sheet 2, etc. if class work exceeds one board.
• 1-Click Combined SVG: Download the entire class's work arranged on a single production SVG ready for LightBurn!

Generate snap-together 3D laser-cut boxes with calculated finger tabs and slots.

• Parametric Sizing: Set width, height, depth, and material thickness (e.g. 3.0 mm birch).
• Interactive 3D Preview: Rotate, orbit, and inspect the assembled 3D box before cutting.
• 2D Flat Cut Sheet: Visualizes the flat pattern layout with all interlock finger joints.
• Fabrication Metrics: Displays minimum sheet size required, total cut perimeter (mm), and estimated laser cutting time.

Capture physical hand-drawn student sketches and convert them to vector cut paths in seconds.

• Live Camera Feed: Uses laptop webcams or USB document cameras to capture paper drawings.
• Perspective Correction: Automatic 4-corner document detection and straightening.
• Real-time Computer Vision: WebAssembly-powered OpenCV.js pipeline for live thresholding and contrast optimization.
• Direct Canvas Import: Sends clean cuttable vector paths directly into the active KnotenSVG workspace.

High-speed raster-to-vector engine for converting PNG, JPG, and clip art into laser paths.

• High Fidelity: High-resolution boundary tracing with noise speckle suppression.
• Adjustable Threshold: Real-time slider to capture delicate linework or bold silhouettes.
• Invert & Smoothing: Invert black/white fills and tune curve smoothing tolerance.

Searchable built-in catalog of public-domain maker silhouettes and clip art.

• In-Editor Search: Search by keyword (animals, vehicles, holiday icons, symbols, shapes).
• Curated Collections: Categories tailored for student school projects and keychains.
• 1-Click Placement: Drops the vector directly onto the workspace grid at proper millimeter scale.

Extensive library of Google Material Design icons ready for door signs and labels.

• Standard Signage: Restroom signs, directional arrows, technology icons, and UI symbols.
• Clean Cut Geometries: Verified clean single-stroke and filled vector paths.

Browse, publish, and remix projects shared by other educators and makers.

• 1-Click Publishing: Publish your project with title, description, and author attribution.
• Remix & Learn: Students can load community projects to study how complex shapes are constructed.
• Download Tracking: Community metrics showing popular classroom projects.

Complete localization engine with 100% string audit coverage.

• Supported Languages: English, Danish (Dansk), and German (Deutsch).
• Instant Switching: Change interface language on the fly without refreshing the page or losing work.
• Child-Friendly Terms: Clear, non-intimidating labels tailored for younger students.

Installable application that runs entirely offline inside classroom networks.

• Cross-Platform: Works on school Chromebooks, Windows, macOS, Linux, and iPads.
• Offline Operation: Service Worker caches all assets; students can design even if the school internet goes down.
• Client-Side Processing: All vector geometry calculates in the client browser with zero server lag.

Fearless student experimentation backed by complete state recovery.

• Unlimited Undo / Redo: Step back through any mistake with standard keyboard shortcuts.
• Auto-Save Protection: Automatic session recovery saves work in local storage against accidental browser closure.
• In-App Bug Reporter: Students or teachers can report issues directly with auto-attached screenshots and diagnostic logs.