Ver. 4.0.0 - Smart Alignment, Dye Simulator, leather colour adjustment, inline text editing and more (Aug 31, 2026) - Leathercraft CAD

Release date: August 31, 2026
v4.0.0 is a major update: Smart Alignment with live preview, a Dye Simulator that predicts mixed dye colours, leather colour adjustment that tunes the photo's tint non-destructively, inline text editing right on the canvas, and much more.

✨ Highlights

  • Smart Alignment — align selected shapes with a live preview before you commit
  • Dye Simulator (bonus feature) — predicts dyed colours from mixes of Lized REN COLOR / CRAFTERS INK, and reverse-searches a recipe from a target colour
  • Leather colour adjustment — tune the tint to match your actual leather without touching the photo
  • Inline text editing — type and edit directly on the drawing; adjust letter spacing and arching with handles
  • Print calibration — per-printer correction values with a guided flow
  • Smarter Drawing Check — no more warnings about harmless micro deviations

🚀 New Features & Enhancements

Alignment & Transform

  • Smart Alignment — align selected shapes from the transform palette, with a live preview
  • Enhanced transform palette — the size dialog is folded in; running scale/rotation totals while a selection lasts, mouse handles for rotating and scaling, Alt to switch the pivot, and more

Dye Simulator (bonus feature)

  • Predict the dyed colour of any mix of Lized REN COLOR / CRAFTERS INK dyes
  • Reverse search: give it a target colour and it finds a recipe
  • Export and import settings — fully interchangeable with the browser version
  • Base colours are calibrated against real bottles

Leather Simulator & Catalogs

  • Leather colour adjustment — tunes the tint without touching the photo itself; adjustments travel with catalog exports
  • New catalog format — about one seventh the download size, with faster and more reliable delivery
  • Improved catalog export (auto-incremented version with the current one shown, overwrite confirmation)

Text

  • Inline text editing on the canvas, with line spacing and frame handles for letter spacing and arching

Drawing, Dimensions & Tracing

  • Split circle and oval tools, plus an option to invert the Y-axis display (up is positive)
  • Improved dimension lines — second-point snapping, auto-shrinking labels, arc leader lines, and more
  • Improved tracing images — snapping pivot drag, right-click to set the pivot, Ctrl+wheel to rotate and scale, and more

Drawing Check

  • Relaxed thresholds that focus on real problems — harmless micro tilts, tiny decoration marks, and pairs across different layers or line styles are no longer flagged

Print

  • Print calibration — per-printer correction values with a guided flow
  • Improved print preview — zoom and pan, page frame snapping to shape bounds, and more
  • macOS printing — page setup and customizable margins (default margin 0)

Mac

  • A real File menu, and menus now follow the app language
  • Trackpad momentum scrolling keeps panning

IME

  • Composition text now shows inline while typing Japanese and other languages (Mac/Windows), and shortcuts no longer stop working after text input

Miscellaneous

  • Welcome screen and tutorial
  • Hotkey and usability improvements (Ctrl+Alt+A for layers, Shift+E for oval, keyboard flow in the move-by-distance dialog, and more)
  • Faster drawing — blitting while panning and zooming, culling off-screen stitches, fewer ruler and grid repaints, and more
  • Revised the EULA (added what happens to the source code if development cannot continue)

🐛 Bug Fixes

  • [Leather Catalog] Fixed replaced leather photos not being saved.
  • [Drawing] Fixed smart offset slightly tilting horizontal and vertical lines.
  • [Text] Fixed arched text drifting off its circle when running counter-clockwise.
  • [Template Repository] Fixed the folder tree being lost in rare cases (multiple safeguards added).
  • [Pricking] Fixed manually placed stitch holes being deleted as duplicates when opening a project.
  • [Pricking] Fixed a stitch hole missing at the end of a run.
  • [View] Fixed ruler numbers misaligning with the grid and overlapping each other.
  • [Stitch Simulator] Fixed a thread change appearing to recolour every stitch.
  • [Leather Simulator] Fixed clicks selecting the wrong leather among overlapping shapes.
  • Other minor bug fixes.

Thank you to everyone who reported issues and requested features — v4.0 is the biggest update in Leathercraft CAD's history. 🙏