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FastTool

LOCAL PIXELS · EXACT CUTLINES · NO UPLOAD

Build a proofable sticker sheet.

Trace real raster pixels, arrange cutlines, and export an exact PDF/SVG evidence pack locally. No upload—and no promise about physical cutters.

Real editable pixels · no verdict until you run preflight

No upload PNG · JPEG · WebP No vendor claim
Live sheet canvas
Drag to move · corner drag or pinch to resize · arrows to nudge

METHOD

What is actually computed

  1. Exact container boundaries reject animation, trailing payload, SVG/HTML polyglots and oversized decode surfaces.
  2. Marching squares traces raster alpha; deterministic simplification and bounded offsets expose islands, holes and narrow features.
  3. MaxRects and row packers use fixed tie breaks. The PDF page box uses exact mm-to-point conversion; decoded pixels are re-encoded without source metadata.

BOUNDARY

A digital preflight, not a cutter promise

The PDF and SVG include no registration or sensor marks. They are not Cricut-ready, Silhouette-ready, vendor-certified or proof that a printer/cutter/material will work. Official vendor software can rescale externally saved PDFs and uses machine-dependent, non-rectangular cuttable areas; rebuild those constraints there and test physically.

Sources reviewed 11 August 2026 · Correction channel: hello@fasttool.app