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Online G-code Editor

Write, refactor, and download G-code source in the browser with completions, find, and format helpers.

Need custom conversion?

Completions appear as you type; press Ctrl+Space to open the list. Tab expands snippets where available. Find: Ctrl+F (Cmd+F on Mac). Format: toolbar button or Ctrl+Shift+B for supported languages.

Choose editor font size in pixels

Write, refactor, and download G-code source in the browser with completions, find, and format helpers.

Paste a snippet, edit with highlighting, then download—prefer your IDE for large projects and debugging.

Focused G-code drafting and review when a full project window is more than you need.

Use G-code samples as starting points: rename identifiers to match your project, delete unused lines, and keep comments honest about limitations.

Prefer small, reviewable buffers over pasting an entire module. If a change needs tests or a build, finish that in your IDE.

When sharing a link to this mode, say what the snippet is for (bug repro, config review, teaching)—context beats a bare URL.

Download when done. Pair with a ConversionTab validator or minifier when the language has one linked in related tools.

Stable link for this mode: /code-editor/gcode

Open this G-code editor, paste or type in the Ace buffer, use find/replace and theme/font controls, then download when ready. Theme choices may stick in local storage on this device—it is not a cloud project.

Editing stays in your browser for normal use (no account required). Do not paste production secrets; save important work to your own repo or encrypted store.

Copy a starter into the editor, rename symbols to match your project, then download. These are teaching/review snippets—not a full app scaffold.

Starter file

// G-code — starter
// 1) replace body
// 2) download with correct extension

main() {
}

Unit-style check

assert equal(expected, actual)
assert length(items) > 0

Common G-code patterns for variables, control flow, and comments. Adjust style to your team’s formatter before you commit.

Variables

name = "value"
count = 0

Branching

if condition {
  action()
} else {
  fallback()
}

Loops

for item in collection {
  process(item)
}

Comments

// line comment

Parse → transform → emit

// G-code pipeline sketch
const input = readLines();
const output = input
  .map(line => line.trim())
  .filter(Boolean)
  .map(transform);
writeLines(output);

Error handling wrapper

// G-code
function runSafely(task) {
  try {
    return { ok: true, value: task() };
  } catch (err) {
    return { ok: false, error: String(err) };
  }
}

Does G-code run on ConversionTab servers?
No. Download the file and run it in your usual compiler or runtime. Editing here does not execute G-code on our servers.
Is my code uploaded while I type?
Normal editing stays in the browser. You do not need an account to draft or download.
Can I change theme and font size?
Yes—use the toolbar above the editor. Preferences can persist in local storage on this device.
When should I use an IDE instead?
Use your IDE for large projects, debugging, secrets, and production builds. This page is for short drafts and reviews.