Fill a PDF Form
Enter values into a PDF's AcroForm fields. Runs entirely in your browser, so your data never leaves your device.
Drop a PDF here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Fill a PDF Form
- 1. Load the PDF form. Drop the document with AcroForm fields into the workspace. The tool reads the field names it contains so values can be matched to them.
- 2. Provide the field values. Enter the values as JSON into Field values (JSON), mapping each field name to the text or checkbox state it should hold once filled.
- 3. Download the filled PDF. Generate and save the file. Every field now shows the value you provided, exactly as if someone had typed it in by hand.
When to use Fill a PDF Form
Fill a PDF Form enters values into a PDF's AcroForm fields programmatically, using a JSON mapping instead of clicking through each field manually. It is for automating form completion when the same data needs to populate a form repeatedly.
- Generating a batch of filled contracts. A template contract PDF has fields for a client name and date that change for every new customer. Filling it from JSON produces each individual contract without manual data entry.
- Populating a government form from stored data. A government PDF form needs to be filled with information already stored in a spreadsheet or database. Mapping that data to the form's fields fills it out automatically.
- Testing a form template with sample data. Before distributing a new PDF form, a developer wants to check it fills in correctly by feeding it a JSON object of test values.
About the Fill a PDF Form tool
Fill a PDF Form runs as plain JavaScript in your browser tab, with no server behind it. Enter values into a PDF's AcroForm fields. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's PDF Tools section, 92 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with the Field values (JSON) setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Fill a PDF Form cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
Which files does Fill a PDF Form accept?
It accepts PDF documents. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.