▲Show HN: Filling PDF forms with AI using client-side tool calling(copilot.simplepdf.com)
20 points by nip 3 hours ago | 7 comments
▲iamflimflam1 2 hours ago
Might be worth making it clearer that the chat messages are going to a remote server. So any PII data is leaving the local machine.
▲nip 2 hours ago
I tried to make it clear with the popup message that appears when you start chatting: "Public demo. Use sample data only. Messages are processed by the selected AI provider."

But you're right that it's not as evident as I wanted to, I'm making a small copy update to make it clearer: "Public demo. Your chat messages leave your device and are sent to the selected AI provider. Use sample data only."

(Since there's support for local models, the popup is only displayed when NOT using your own model)

Thanks!

EDIT: the copy update is live, thanks again!

▲grahammccain 1 hour ago
Keep going though. I’m definitely looking for something like this once we can get something secure we can use with proprietary and pii data.
▲FrasiertheLion 48 minutes ago
This is the canonical use case for Tinfoil: https://tinfoil.sh/inference. It provides verifiably private AI inference with frontier open source models: https://docs.tinfoil.sh/models/overview

Disclaimer I'm the cofounder, only recommending it because it's legitimately the right shape for your problem. The idea is that the model runs inside a secure enclave (using NVIDIA confidential computing), and the enclave code is open source and is verified via remote attestation upon connection: https://docs.tinfoil.sh/verification/verification-in-tinfoil

▲nip 1 hour ago
Thanks!

Anything you see missing in Copilot to achieve that?

Not sure if you noticed, but there's an arch-diagram in the info popup [1].

[1] https://copilot.simplepdf.com/?share=a7d00ad073c75a75d493228...

▲nip 2 hours ago
Just to be clear, this is a technical demo showing what's possible with client-side tool calling + local models: LLM-assisted form filling where no document data has to leave the user's machine.

Use cases range from:

- Filling foreign-language forms

- Navigating a contract before signing: "can I trust ALL the clauses here?"

- Pre-filling repetitive forms from existing data sources (CRM, EHR, etc. via MCP/RAG)

Copilot is designed to be embedded; our customers ship it white-labeled inside their own products.

▲simianwords 25 minutes ago
It looks cool but, how is this different from me uploading to chatgpt and asking it to fill in?
▲nip 6 minutes ago
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▲kiney 28 minutes ago
Does it support XFA forms?
▲nip 21 minutes ago
Hey Kiney!

It supports AcroForms (like in the example) but not XFA.

Why are you asking? gov forms support?

▲ajaystream 5 minutes ago
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▲lyrie 1 hour ago
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