Is FormFlat free to use without a subscription?

Yes, FormFlat is 100% free with no accounts, no monthly paywalls, and no download watermarks.

Are my confidential files uploaded to any servers?

No. All PDF rendering, form filling, signature baking, and vector flattening happen strictly inside your browser using Web Workers and WebAssembly.

What is PDF flattening and why does it fix the Mobile Blank Bug?

Many mobile viewers (iOS Files, Android, Gmail previews) do not render interactive AcroForm fields properly. FormFlat bakes text and signatures directly into permanent vector content streams, ensuring universal rendering on every device.

Why do my filled PDF forms show up completely blank when emailed?

Most PDF software saves your text inside an interactive layer called AcroForm. Default email preview apps in iOS, Android, and Gmail do not render this layer. Flattening burns the text directly into the page.

Fix PDF Forms Showing Blank on iPhone, Android & Gmail When Emailed

Why your filled forms appear empty on mobile and how to fix them forever. FormFlat compiles annotations into permanent PostScript vectors and purges buggy interactive widgets.

Step-by-Step Guide

STEP 1

1. Open the Problematic PDF

Load the PDF form that appears blank when viewed on mobile or email previews.

STEP 2

2. Automatic Prepress Compilation

FormFlat detects annotations and compiles them directly into permanent page vectors.

STEP 3

3. Download & Send With Confidence

Download the flattened file. The interactive AcroForm catalog is purged, guaranteeing universal rendering everywhere.

Frequently Asked Questions

Why do my filled PDF forms show up completely blank when emailed?: Most PDF software saves your text inside an interactive layer called AcroForm. Default email preview apps in iOS, Android, and Gmail do not render this layer. Flattening burns the text directly into the page.