G-code Editor

Make targeted changes to a print file: find and replace, temperature and speed adjustments, fan control, cleanup, and commands at a specific layer.

Drop G-code to edit

G-code, gzip, bgcode, and gcode.3mf are supported. Nothing is uploaded.

Find and replaceLiteral and regex find & replace

Print adjustmentsTemperature and speed adjustments

Files never leave your deviceM104 · M109 · M106 · G0–G3 · ;LAYER

From file to decision in three steps

No installation. No signup. No waiting for an upload.

Drop a file

Choose a G-code file from your slicer, SD card, or a message from a friend. It opens locally.

Understand it

See the toolpath by layer, check time and material, and catch obvious problems before you print.

Use it

Export a report, convert the format, or take the numbers into your cost calculation.

G-code Editor

Make precise, reviewable changes to a print file with find and replace, temperature and speed adjustments, fan control, cleanup, and layer insertion.

Literal and regex find & replace
Temperature and speed adjustments
Remove comments and thumbnails
Insert commands at a layer

All tools

Your files stay yours

Every byte is processed on your device. No uploads, no accounts, no tracking of file contents.

FAQ

Questions, answered

Can I edit BGCODE or gcode.3mf files?

Yes. Binary BGCODE and packed 3MF files are decoded to plain G-code in the browser, edited, and downloaded as .gcode or .gcode.gz. The original file on disk is never changed.

Does find and replace support regular expressions?

Yes. Use literal text or JavaScript regular expressions, with case-sensitive and whole-word options. The result panel reports how many matches changed and shows a diff preview before you download.

Which values do the adjustments change?

The temperature offset only changes S values on M104, M109, M140, and M190. Speed scaling changes F values on G0–G3 moves. Fan override changes M106 S values. Extrusion distances are not modified.

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A small, sharp G-code toolkit

Five tools that cover the work between slicing and printing. More tools are on the way.

Live

G-code Viewer

See the toolpath in 3D and 2D, scrub through layers, and inspect travel moves, speeds, and print statistics.

Open tool

Live

G-code Analyzer

Get print time, filament usage, cost, layer times, speed and flow stats, and practical warnings.

Open tool

Live

G-code Converter

Turn bgcode, gzip-compressed G-code, or gcode.3mf into plain G-code that any editor or printer can read.

Open tool

Live

G-code Thumbnail Studio

Pull the preview image out of a G-code file, or render a clean thumbnail from the toolpath and write it back into the file.

Open tool

All tools

G-code tools

Five focused tools for inspecting, understanding, converting, editing, and finishing G-code. All processing stays on your device.

All tools