Make Codex yours,
with confidence.

01 Guides

Change Codex Font Size

Change Codex font size in the ChatGPT desktop app, VS Code extension, or CLI with the correct Appearance, editor, or terminal control.

Read the guide → 02 Guides

Change Codex UI and Code Fonts

Change interface and code fonts from Codex Appearance and understand how font names behave in theme imports.

Read the guide → 03 Guides

Codex App Themes vs CLI Themes

Compare Codex app themes and Codex CLI themes, including desktop Appearance imports, .tmTheme files, and IDE-extension boundaries.

Read the guide → 04 Guides

Codex Appearance Settings

Review Codex desktop Appearance settings for themes, colors, fonts, and the limits of DexThemes imports across app, CLI, IDE, web, and mobile.

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Codex Dark Mode: Does Codex Have a Dark Theme?

Does Codex have dark mode? Use Codex app dark mode through the desktop base theme or import a DexThemes dark theme; CLI and IDE themes use separate workflows.

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Codex Theme Accessibility

Test text, controls, semantic colors, fonts, and dark and light variants before sharing a Codex theme.

Read the guide → 07 Guides

Codex Theme Generator: Create a Custom Theme

Use the DexThemes Codex theme generator to build and preview dark or light palettes, then explicitly import the selected variant in Codex Appearance.

Read the guide → 08 Guides

Codex Theme Import Troubleshooting

Diagnose incomplete payloads, variant mismatches, unsupported code theme IDs, font fallbacks, and settings handoff confusion.

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Codex Themes Download: Desktop Imports and CLI .tmTheme Files

Download Codex themes safely: use a DexThemes import string for desktop Appearance, or a .tmTheme file only for Codex CLI syntax highlighting.

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Create a Custom Codex Pet

Create and customize a floating Codex pet in the ChatGPT desktop app with the documented Pets flow, visual QA, reduced-motion checks, and rollback.

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Create Dark and Light Codex Themes

Design paired dark and light variants that share an identity without relying on automatic color inversion.

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Customize the Codex Status Line

Configure the Codex CLI status line with /statusline, safe one-off tests, documented config, validation, and rollback steps.

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How to Change the ChatGPT Desktop App Theme

Change the ChatGPT desktop app theme with documented Appearance controls, and learn why a Codex theme import is not established ChatGPT-mode compatibility.

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How to Install a Codex Theme

Install a Codex desktop theme through an explicit review: choose a DexThemes variant, copy its complete codex-theme-v1 string, then import it in Appearance.

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Install a Custom .tmTheme in Codex CLI

Install a custom .tmTheme in Codex CLI with the /theme picker, correct $CODEX_HOME path checks, safe inspection, and rollback steps.

Read the guide → 16 Guides

Is DexThemes Safe

Understand the theme import trust boundary, community provenance, account separation, and checks to perform before importing.

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Move a Codex Theme to Another Computer

Save each app theme variant as a portable import string and reinstall fonts separately on the destination computer.

Read the guide → 18 Guides

Official Curated and Community Themes

Distinguish Codex-sourced theme families, DexThemes-maintained palettes, and published community submissions.

Read the guide → 19 Guides

Share a Custom Codex Theme

Share a portable theme import string, a public theme page, or a community submission without implying automatic installation.

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