TL;DR – PromptMix is the fastest way to create well-structured AI prompts:
Drag any block → reorder → copy or deep-link. No sign-up required.
1. Why "block-based" prompts?
Most high-performing prompts share the same skeleton:
- Role – sets expertise
- Tone – adjusts voice
- Constraint – word limit, format, etc.
- Example – few-shot guidance
PromptMix turns each part into a reusable block. Instead of rewriting, you:
Drag "SEO Expert" → Drag "Friendly Tone" → Drag "150 words limit"
…and the canvas instantly merges them into one clean prompt.
2. Zero-login, zero-latency
We store everything in your browser (localStorage). No e-mail, no OAuth, no data leaks—just open /builder and start composing. Deep links like
https://promptmix.io/?p=r1-t3-c2
reproduce the same canvas for teammates, creating "prompt snippets" you can post on Slack, X, or a blog.
3. When should you use PromptMix?
| Use-case | Benefit |
|---|---|
| Drafting marketing copy | keep tone & length consistent |
| Converting docs to JSON | reusable constraint block |
| Teaching prompt engineering | share a read-only deep link |
4. Everything is free now
All features—including advanced Batch Generate—are fully unlocked with no login or payment required. Use local storage by default; optionally sign in to sync to the cloud (still free).
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Need a quick start? Head to /builder and mix your first prompt in under 30 seconds.
Happy prompting! 🚀