Built For Teams Who Need To Ship
Better Copy Faster
Paste any URL, get AI-powered conversion analysis, edit text directly on a live preview, and export changes for your team.
No design tools. No back-and-forth.
Get Your Free 25 Credits and Try Redpen Today
Less Back-and-Forth to Approve Copy
Review edits in-context. See exactly what changed. Approve faster with fewer rounds.
No CMS Access Needed for Stakeholders
Anyone can suggest edits from a URL. No logins or permissions. You control what ships.
Faster Iteration on High-Impact Pages
Create A/B/C variants in minutes. Tighten copy with AI. Export CSV and a screenshot to hand off.
Built by Cantilever. Trusted by leading brands. Designed to help your team ship faster.
Turn Any Page Into an Editable Draft.
- Instant AI Audit
Auto-scan page structure and get conversion-focused copy suggestions in seconds
- Live Edit & Preview
Edit text directly on the page, see changes in real-time, and compare new versions side-by-side
- Dev-Ready Exports
Hand off annotated screenshots and a copy changelog — zero confusion
How Redpen Works
Redpen turns any live page into a safe, shareable draft — so teams can iterate on copy without redesign tools, CMS access, or messy feedback loops.
Use Cases That Show Up Every Week
Redpen is built for the moments when copy needs to move — but the process slows down.
Landing page iteration (no redesign)
Tweak headlines, CTAs, and supporting copy in the page's real layout. Explore multiple directions without reworking sections.
Stakeholder review (without CMS access)
Let leadership, product, or marketing review changes in context. Avoid CMS seats, permissions, and "please update this doc" chaos.
Campaign variants (A/B/C drafts)
Create versions for different audiences, value props, or tones. Compare side-by-side before anyone touches the CMS.
Agency / dev handoff
Export a clean change list (old → new) plus a page screenshot with numbered references. Drop it into an Asana task and ship.
AI That Understands Your Site — Not Just Your Prompt
Most AI tools don't know your layout, hierarchy, or tone. Redpen does — which means suggestions are more usable and require less rewriting.
- Structure-aware suggestions based on the actual page hierarchy
- Copy that fits the layout constraints you're working with
- Less prompt work to get tone, clarity, and CTA strength right
Redpen provides automated insights to help your team identify potential improvements. Final decisions and implementation remain your responsibility.
Page + site context
Redpen can pull supporting pages (like About, Product, Pricing, Proof) to improve accuracy and tone for the page you're editing.
Brand Kit
Save reusable context for each website — docs, URLs, PDFs, and key messaging — so AI suggestions stay consistent across multiple sites.
Great for agencies and teams managing 5–10 sites.
Everything You Need To Draft, Align, And Ship
Redpen is built around one workflow: iterate on page copy in context, then hand off implementation cleanly.
Draft & Edit
- URL-to-editor live preview
- Click-to-edit text
- Rich text formatting
- Version A/B/C
Improve with AI
- Quick actions (Headlines, CTAs, Clarity, Urgency)
- Custom prompts
- Section-scoped suggestions
Handoff & Execution
- Highlight changes on page
- CSV changelog export
- Annotated screenshot export
- Copy-to-clipboard for tickets
Frequently Asked Questions
Getting Started
Pricing & Account
Safety & Privacy
Features & Workflow
Handoff & Collaboration
Turn Your Next Copy Request Into A Clean Draft And A Clean Ticket
Paste a URL, iterate on the page in context, and export a dev-ready changelog your team can ship.