Form Logic Designer

Design conditional logic for PDF forms. Free online — no sign-up, no watermark.

Fix, annotate and polish PDFs without heavyweight desktop apps — add watermarks, page numbers, headers, signatures and form fields, crop pages, fill forms and adjust colors right in the browser.

Accepts .pdf files. This tool uses secure in-memory processing on our server — files are never stored.

How to use Form Logic Designer

1. Upload your file — drag and drop it onto the page or click to browse.
2. Adjust the tool's options if needed, then run it.
3. Download the finished file straight to your device.

Frequently asked questions

Is Form Logic Designer free to use?

Yes — completely free, with no sign-up and no watermark on the output.

Is my file safe?

This tool uses secure in-memory processing on our server — files are never stored.

What files does Form Logic Designer accept?

Accepts .pdf files.

Related tools

Add Watermark Add Stamp Page Numbers Header & Footer Sign PDF Crop PDF

LoveYou2PDF — 141 free online PDF and document tools that work in your browser.