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Hi HN,

I built a small web app that lets you sign PDFs and replicate initials across all pages entirely client-side. PDFs are processed in the browser only — nothing is uploaded to a server.

Why I built it:

Most tools require accounts or uploads

Initialing long contracts page-by-page is tedious

Some clients are sensitive about document privacy

Features:

Typed or drawn signatures

One-click “initial all pages”

Works without signup

Free option (watermark), paid to remove it

Tech notes:

PDF manipulation is done client-side (JS)

No server-side PDF processing

Payments only touch Stripe/PayPal

Link: https://instantpdfsign.com/

Would love feedback on:

UX issues

Edge cases with PDFs

Anything you’d do differently technically

Thanks!