Advanced Align View helps you align your viewport to a reference point, making precision modeling easier on complex geometry, CAD imports, non-world-aligned objects, and more.
This addon is a fork of Align2Custom. As a regular user of Francois Daubine's addon, I progressively added more and more features tailored to my workflow, and am now considering it user-friendly enough for a release. This addon is ideal for hard surface, industrial and automotive modelers.

Align2Custom does not guard against roll when aligning the view, which can produce confusing camera transitions. Minimize Viewport Roll reduces that by preserving your viewport’s up orientation whenever you align to a canonical viewpoint.

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Stay focused on your work, and use Pie Menus to save time. How to use:
| Default Pie Menu | Optional Aligned Pie Menu (recommended) |
|---|---|
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Just want to align your view but not sure which axis to use? Simply roughly align your view to the desired direction and click on "Smart Align". It will detect the closest matching angle (depending on the selected method).

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| Custom (legacy) | 3D Cursor | Selection | Adv. Edge Align | |
|---|---|---|---|---|
| What it does | Aligns your view to a "Custom Orientation | Aligns view to 3D Cursor's orientation | Aligns view to active Object's orientation. In Edit Mode, aligns to selected geometries | Aligns view to a single edge for advance Viewport alignment |
| Ideal for: | Legacy method (don't recommend) | Aligning View to imported CAD model with messy topologies | Most case scenarios when tweaking/adding new objects relative to the View | Advanced surface modeling requirement precise edge loop alignment (straightening an edge, etc) |
In Edit Mode, with one edge selected, align your view to the selected edge so it becomes parallel to the screen border, providing a reference point for precise alignment operations. Unlike Edge Roll (more below), this mode has 3 degrees of freedom.

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With these options enabled, entering Align View will:

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Incremental 90/180/left/right/up/down relative rotations to move around the aligned object.

CTRL + ALT + QSHIFT + CTRL + ALT + QDouble CTRLALT + MMB + dragDouble ALTALT+click on ExitALT+click on AxisSHIFT + ALT + WHEEL DOWN/UPThe add-on comes with many settings that can be tailored to your needs:

Keywords: align2custom align view alignment advanced look at custom angle
This extension does not require special permissions.
Very useful, thanks for sharing!