Head-to-Head Comparison · Alternative to PromptDC · ✍️ ai writing
PromptDC vs Page Assist
A browser sidebar that reads the page, rewrites the selection, and saves custom actions; your local model does the thinking. Here is how Page Assist ($0/mo open source) stacks up against PromptDC ($9/mo) across cost, hosting, data privacy, and real-world trade-offs.
Page Assist
$0.00/mo · MIT
PromptDC vs Page Assist Specification Matrix
facts verified 2026-08-14
| Dimension | PromptDC (Paid) | Page Assist (Replacement) |
|---|---|---|
| Monthly Price | $9 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $108 / yr | $0 / yr (Save $108) |
| 1-Year Cost (5 seats) | $540 / yr | $0 / yr (Save $540) |
| 1-Year Cost (10 seats) | $1,080 / yr | $0 / yr (Save $1,080) |
| Source & License | Proprietary SaaS | open source MIT |
| Where It Runs | Vendor Cloud | Local (on your machine) |
| Platforms | Web / Cloud | mobileextensionone-click install |
| GitHub Stars | — | ★ 8.1k (active aug 2026) |
Deep Dive: Switching from PromptDC to Page Assist
Trade-offs, installation & data architecture
What you trade away
It can rewrite selections and use page context, but it has no PromptDC-specific pipeline for turning vague coding requests into structured implementation-ready prompts.
How to deploy Page Assist
Install the extension from the Chrome, Edge or Firefox add-on store
What it takes to run
The extension installs cleanly, but it still needs a running local model endpoint and browser-to-localhost connectivity
Where your data lives
Chats, settings and other extension data are stored in the browser's local storage; only the optional share feature contacts the project's server
Why fork Page Assist instead of vibe-coding a PromptDC clone?
A useful personal version is highly one-shot-able: an MV3 content script can capture selected text, send it to an LLM with one of two system prompts, then replace a normal editable field or copy the result. The commercial product earns its keep through Writing profiles (grammar fix, email, social post, shorten, tone), a Coding mode that auto-detects which AI tool you are prompting and tailors the rewrite, polished interaction design, and defensive handling of complex editors where naive DOM replacement can fail or corrupt text.
PromptDC vs Page Assist FAQ
Is Page Assist a good free alternative to PromptDC?+
Yes. Page Assist is a verified open-source (MIT) replacement for PromptDC. A browser sidebar that reads the page, rewrites the selection, and saves custom actions; your local model does the thinking.
What is the catch when switching from PromptDC to Page Assist?+
It can rewrite selections and use page context, but it has no PromptDC-specific pipeline for turning vague coding requests into structured implementation-ready prompts.
How much do you save switching from PromptDC to Page Assist?+
PromptDC costs $9/mo ($108/yr) per seat, whereas Page Assist is $0/mo. Switching saves $108/yr for a solo user, $540/yr for a 5-person team, and $1,080/yr for a 10-person team.
How do I install or self-host Page Assist instead of PromptDC?+
Install: Install the extension from the Chrome, Edge or Firefox add-on store. Setup: The extension installs cleanly, but it still needs a running local model endpoint and browser-to-localhost connectivity
