I Built a Free PDF Form Filler (Because PDFfiller Charges for That)
I needed to fill out a few PDF forms for work. You know the drill — open PDFfiller, upload the file, fill in the fields, download.
Except I hit a wall. My forms were behind the free-tier limit. And I realized: my sensitive work documents were being uploaded to a third-party server just to type a few words into text boxes.
That shouldn't be the default.
So I built something better.
PDF Form Filler is a free, client-side tool that runs entirely in your browser. No uploads. No accounts. No subscriptions.
What it does:
- Upload any PDF with fillable form fields (drag & drop or click to browse)
- All form fields are automatically detected and listed in the sidebar
- Type your answers directly into each field
- Download the filled PDF instantly — no server upload
Everything happens locally using pdf-lib. Your files never leave your device. The whole thing is a single HTML file with no server component.
Why this matters
Most online PDF tools follow the same playbook: free for one or two tasks, then pay up. Or require an account just to use basic features. And somewhere between "upload" and "download," your documents are sitting on a remote server.
For forms — which often contain personal or confidential information — that's a privacy problem.
This tool solves all three issues at once: it's free, private, and works offline after the first load.
Open and use it
No signup, no install, no tricks. Just open the tool, upload your PDF, and go.
Built because filling PDF forms shouldn't cost money or your privacy.
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