100% Local · No Server · Real Model

AI Video Prompt Generator — Free, Local & Private

A real language model runs entirely in your browser. Type an idea and get a production-ready video prompt — or drop a video and get the prompt behind it. Nothing leaves your device.

📱 Full AI features need a desktop browser🎲 On mobile? Try a random idea →

🔒 Everything runs on your device — your video, images and ideas never leave it. The model downloads once, then works offline.

Which engine should I use?

1

You have an idea → use Text to Prompt: describe your scene, pick platform/style/duration, get a cinematic prompt.

2

You have a reference video → use Video to Prompt: upload it, AI describes every frame, then writes the prompt.

3

You have a reference image → use Image to Prompt: upload it, AI reads the picture and writes a prompt for image or video models.

4

Prompt improver: already have a prompt that isn't working? Paste it and let the AI upgrade it to production quality.

5

Character card: creating a short drama or series? Lock your protagonist’s face, outfit and personality once, then reuse the card in every prompt.

Why local generation

🔒

Total privacy

Your ideas and prompts never leave your device. No uploads, no logs, no one watching. True for every single generation.

⚡

Free & unlimited

The model runs on YOUR hardware, so there's no server bill for anyone. No API keys, no quotas, no paywalls — generate 100 prompts a day.

📡

Works offline

After the one-time download, the model lives in your browser cache. Turn off Wi-Fi and it still generates — airplane mode, no problem.

💎

Your data is yours

No account, no email, no analytics on your prompts. The model has no idea who you are — and neither does anyone else.

Local vs. Cloud — where your content goes

Hand your ideas to a cloud tool and they live on a server you can't see. A local model keeps every choice — and every word — with you.

VideoPrompt — on your deviceTypical cloud tools
Your content✓ Never leaves your device✗ Uploaded to their servers, then out of your control
Privacy✓ Zero risk — no server ever sees it✗ May be stored, analyzed, or used for AI training (check their terms)
Works offline✓ Yes — after the one-time download✗ No — needs a connection
File size limits✓ None✗ Common: 50–100MB caps
Account & email✓ Not needed✗ Usually required

Frequently Asked Questions

Q: Is this AI really running in my browser?

Yes. It's a real Qwen2.5 language model, compiled to WebAssembly/WebGPU. After the one-time download, open DevTools → Network and generate: you'll see zero requests leaving your device. Even airplane mode works.

Q: Why does the model need to download 1GB?

The language model's weights must exist on your device to run without a server. Think of it as installing an app: once. After that, the browser cache serves it instantly, and you can pick a smaller tier (430MB) if you prefer. Note: clearing your browser cache removes the model — you'll download it again.

Q: Does my video leave my device?

No. Frames are extracted and described entirely in your browser. Nothing is uploaded — there is no server that could receive it. Load the page, switch on airplane mode, and it still works.

Q: Which engine should I choose?

If you have an idea in your head, use Text to Prompt. Have a reference video or image? Use Video to Prompt or Image to Prompt. Already have a prompt that needs sharpening? Use the Prompt Improver. And if you need the same character in every shot, build a Character Card.

✍️ Reviewed by the VideoPrompt editorial team — Last reviewed: 2026-09-28