Free Online Tool

Fake ChatGPT Generator

Create realistic OpenAI ChatGPT conversation screenshots instantly.

Mockly's Fake ChatGPT Generator lets you build authentic-looking ChatGPT conversation screenshots. Select from GPT-4o, GPT-3.5 Turbo, o1, and other OpenAI model labels. Add user and assistant turns, code blocks, markdown formatting, and toggle between light and dark themes. Perfect for YouTube thumbnails, social media posts, blog articles, and educational demonstrations.

Open ChatGPT Screenshot Editor →

No login required · No watermarks · 100% free

Everything You Need to Create Realistic Screenshots

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GPT Model Selection

Choose from GPT-4o, GPT-4, GPT-3.5 Turbo, o1, and o1-mini model labels for the conversation header.

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Multi-Turn Conversations

Add as many user and assistant message turns as you need to build a realistic conversation flow.

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Dark & Light Themes

Switch between ChatGPT's dark sidebar mode and the clean white light theme for export.

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Markdown & Code Blocks

Render markdown formatting and syntax-highlighted code blocks exactly as they appear in the real ChatGPT.

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PNG Export

Export your fake ChatGPT screenshot as a high-quality, watermark-free PNG in one click.

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100% Private

Your fake conversations are never sent to OpenAI or any server. Everything runs in your browser.

Frequently Asked Questions

Can I choose which GPT model appears in the screenshot?+
Yes. You can select from GPT-4o, GPT-3.5 Turbo, o1, o1-mini, and other model labels to appear in the conversation.
Does this tool use the real ChatGPT API?+
No. This is a screenshot mockup generator — it only creates a visual representation. No real AI is called.
Can I add code blocks to my fake ChatGPT conversation?+
Yes. The editor supports markdown rendering so you can include code blocks with syntax highlighting in assistant messages.
Is the fake ChatGPT screenshot watermark-free?+
Yes, all exports from Mockly are completely watermark-free at full resolution.
Can I also create fake Claude or Gemini screenshots?+
Yes! Use our Fake Claude Generator or Fake Gemini Generator for those AI assistants.

Also try these free tools

Fake Claude Chat GeneratorFake Gemini Chat GeneratorFake AI Chat Generator (All)Fake WhatsApp Chat Maker

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