A built-in add-on under Object › Plug-ins › Path Precision Tools:
- Anchor Eraser Brush: painting over selected paths removes the anchors
under the brush that the outline can do without within a tolerance,
refitting the handles beside them (Alt ignores the tolerance, Cmd/Ctrl
deletes without refitting, pen pressure can scale the brush); one undo
step per stroke.
- Extend Path tool: dragging an end of an open path carries it on
straight, by stretching its last curve or along the circle it curves
on, or shortens it back along itself.
- Measure & Inspect tool: drag to measure distance and angle; hover a
path to read segment and path length, area, curvature, tangent and
anchor angles and handles, in the document's units.
- Anchor Inspector panel: the selected anchor's position and handles as
numbers, with Make Smooth (auto-smooth rule), Make Corner, Equalize
Handles, Remove Points Keep Shape, Add Points and three ways to close.
- Add Points at Crossings and Split at Crossings.
The tools stay out of both toolbars as shipped; the All Tools drawer
lists them under the add-on's heading. Commands are addon.pathtools.*;
the existing commands, tools and menus are unchanged.
A built-in add-on under Object › Plug-ins › Artwork Cleanup:
- Simplify Anchors (Keep Shape) removes anchors while the outline stays
within a tolerance, optionally keeping sharp corners.
- Document Health Check finds and fixes 16 kinds of problems in the
selection or the document (stray points, duplicate and collinear
anchors, tiny handles, nearly closed paths, needless groups, compound
paths and clipping groups, unpainted and invisible objects, duplicate
objects, art off every artboard, empty artboards…), with Show, Fix
Selected and Fix All, each fix one undo step.
- Deep Ungroup and Rejoin Path Pieces.
The add-on lives in its own modules (pathops, engine and ui-egui
addons folders) and leaves the existing commands, tools and menus as
they were.