I vibe-coded minisign, a docusign-like app with v0 in 2 hours. - Simplest possible interface - Sign in with X, drag & drop a PDF, get a link to share - Signer registers their signature Try it here: Here’s how I built it 🧵

Started by forking my "Login with X" starter template. Added my X API keys in the project settings and had working auth in 2-3 minutes. Saved a ton of time (and credits!). Starter:

For storage and metadata, I used two of v0 native integrations: @supabase → signer info + document metadata @vercel Blob → PDF files Wiring things up was super smooth, I just connected both directly from the integrations panel.

When a user uploads a PDF: → The file is stored in Blob → Supabase logs metadata (owner, filename, timestamps) → A signing link is generated The owner signs first, then shares the link with the recipient.

Signatures are generated from names using the Canvas API, styled with a handwritten look. Then pdf-lib injects both signatures into the PDF — all in-browser. Final file downloads instantly. No server-side processing.

Built this as a starter — dual signatures, in-browser stamping, and dev mode included. $100 in v0 credits for whoever takes it to the next level. Try it: Open in v0: Shoutout to @AzianMike for the inspiration here 🫶

@v0 So good

@v0 Love to see it

@v0 wait for lawsuit from them

@v0 Unreal!

@v0 this is usually a paid feature on most edit-your-pdf kinda website