Reading time calculator for docs and posts
Get a realistic read-time estimate for long form content before you publish, so your audience knows what to expect. This utility stays on-device and does not transfer your draft to a model service.
This is the free version
Works where you write
PromptDC rewrites selected text in any app, every browser, your IDE and your terminal on Mac and Windows.
One keyboard shortcut
Select text, press Cmd+Shift+E or Ctrl+Shift+E, review the result, then Replace or Copy. It never presses Enter for you.
Your profiles, your models
Pick a default profile per app, or bring your own API key on the Lifetime plan.
Free here: unlimited, this utility runs entirely in your browser. In the app: from $9/mo, or Lifetime from $69 with your own API key.
Use this estimate when creating newsletters, onboarding guides, or product docs. The calculator helps you align draft length with audience attention, then update quickly while typing. Since it runs in-browser, there is no API usage and no cap, which makes it easy to test multiple sections before final approval.
Common questions
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Enhance any text you select in any app on desktop, in browsers, in your editor or terminals.
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