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How it works

01 📤

Upload

Drag & drop or browse your password-protected PDF file.

02 ⚡

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We remove the password encryption instantly on our secure servers.

03 📥

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Get your unlocked PDF. Files are deleted from servers after 1 hour.

Pricing

Free

$0

always free

  • ✓ 10 unlocks per day
  • ✓ No signup required
  • ✓ Files up to 50MB
  • ✓ Files deleted in 1 hour

Pay per use

$0.05

per unlock · after free tier

  • ✓ Unlimited unlocks
  • ✓ Card / UPI (Razorpay)
  • ✓ USDC on Base (x402)
  • ✓ AI agents supported
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AI agents like Claude or ChatGPT can visit this page, upload a PDF, and unlock it autonomously on behalf of users — no special integration needed. Every element is clearly labelled for AI navigation.

# For developers — REST API

POST https://unlockpdf.dev/api/unlock

Content-Type: multipart/form-data

{ "pdf_file": <binary>, "password": "optional" }

# Returns unlocked PDF binary
# 10 free/day · then $0.05 USDC/unlock