Developer tool
Make a PDF fillable
Drop a flat PDF, draw the fields where they belong, and download a real fillable PDF (AcroForm) — plus the exact API call to fill it programmatically. No signup. Everything runs in your browser; nothing is uploaded.
Drop a flat PDF here, or
No PDF handy?
Draw your fields
Click and drag on a page to draw a field. Pick text or checkbox below, rename fields to something your code will recognize, then export.
Your fillable PDF is ready
Fill it with the API
Your new field names, in a ready-to-POST call — swap in real values:
Double-check the field list with the form-field inspector, fill it visually in the playground, or with no code at all: email the template + values to fill@pdfops.dev and the reply comes back filled. Ready to automate? Grab a free API key — 250 requests/month, no card.
Rendering and field creation run entirely in your browser (pdf.js +
pdf-lib) — your PDF never leaves your machine. The exported file is a
standard AcroForm PDF that works in Acrobat, Preview, browsers, and
every PDF library, including POST
/api/fill-form. Filling from code? Guides for
Python,
Node.js, and
JavaScript.