A prompt library, built like a dev tool
PromptOS is a single static site: no sign-up, no paywall, no server. Here's what's inside and why it's built this way.
217Prompts
11Categories
—Creators credited
—Editable fields, total
How it works
From search to clipboard in three steps
No accounts, no configuration — the whole flow happens on the page.
1
Find a prompt
Search by keyword, or browse one of the 11 categories from the sidebar or the library page. Sort by A–Z or by how many fields need filling in.
2
Fill in the fields
Every prompt sits in a live textarea. Replace the [BRACKETED FIELDS] with your own details, right where you're reading — no copy-paste-edit round trip.
3
Copy and go
One click copies your edited version to the clipboard. Made a mess of it? The reset button restores the original text instantly.
Frequently asked
Good to know
No. Favourites are stored in this browser's local storage only. Clearing your browser data or switching devices will reset them — nothing is sent to a server.
Edits live only in the textarea for your current visit. Copy the finished version somewhere safe — refreshing the page brings back the original prompt text.
Most were written for image models (like Midjourney, DALL·E or Gemini) and chat assistants (like ChatGPT). Check each prompt's source tag for context on where it came from.
Yes — the project is open source. Open an issue or a pull request on GitHub and it'll be reviewed.