G-code Analyzer

G-code file → analysis + optimization recommendations

Downloaded STL → sliced → but print time is 18 hours? G-code Analyzer opens it, analyzes and suggests concrete optimizations - print speed limits, retract overuse, peak acceleration spikes, unused outer wall passes. Without printing to test.

Available with the Pro plan (15 EUR per month). The printed book includes 3 months of Pro.

Drag G-code file - privacy guaranteed, browser-side processing
Drag G-code file - privacy guaranteed, browser-side processing
Supports Cura, PrusaSlicer, Orca, Bambu, Simplify3D
Supports Cura, PrusaSlicer, Orca, Bambu, Simplify3D
EN toggle - analysis in real time BG/EN
EN toggle - analysis in real time BG/EN

Key features

Multi-slicer support

PrusaSlicer, Bambu Studio, Cura, Orca, SuperSlicer - auto-detect and parse the right dialect.

Print time breakdown

How much for perimeters, infill, support, travel - see where to optimize first.

Material analysis

Exact filament usage, broken down by setting type.

Peak velocity & acceleration

Graph of speed and accel over time. Spikes = vibration = ringing.

Hot end & bed thermals

Analysis of temp changes - more than needed = wasted time on heating.

Optimization recommendations

Concrete slicer-settings to cut print time 10-30% without quality loss.

How it works

  1. 1Upload G-code file (or drag & drop).
  2. 2See breakdown - print time, material, movements.
  3. 3Click "Recommendations" - concrete settings for improvement.
  4. 4Apply in slicer and re-slice.
  5. 5Compare new vs old - print time, material, quality estimation.

Who it's for

Speed-seeker

Print time 18h for a 3DBenchy? Problem. Analyzer tells you where.

Print service

Optimize every client G-code before printing - save hours of machine time.

Material seller

Real filament consumption - for accurate pricing.

Student

Educational - what G-code is and how the slicer works.

Frequently asked

How do I get access?

A physical-book code gives Pro access for 90 days; the PDF edition - for 30 days.

How big a file is supported?

Up to 500MB G-code (about 5-7 hours of printing). For larger - chunked analysis (available in Pro tier).

Which slicers?

PrusaSlicer 2.0+, Bambu Studio 1.0+, Cura 4.0+, Orca 1.0+, SuperSlicer 2.0+. As of 2026-05.

Are files stored?

No - analysis is client-side for privacy.

Can I modify G-code in the tool?

No - analysis only. For editing we recommend the g-code editor in your slicer.

Want full access to all 148 instruments?

The Big Book of 3D Printing includes 90 days of Pro access to every instrument with the physical book's code - 30 days with the ebook. Calculators, wizards, comparisons, generators, and more.

Get the book