The PDF editor
that works.
Annotate, fill forms, sign, and export. Annotations created in PenguinPDF open correctly in Adobe Reader, Chrome, and Apple Preview.
Annotate, fill forms, sign, and export. Annotations created in PenguinPDF open correctly in Adobe Reader, Chrome, and Apple Preview.
Capabilities
Focused PDF tools that do exactly what you'd expect, without the bloat.
Ink, highlight, notes, free text — stored as real PDF annotations, not image overlays. Opens in any PDF reader.
Never lose work. PenguinPDF saves in the background automatically using crash-safe atomic writes.
Fill AcroForm fields and JavaScript-calculated forms. Works with government forms, contracts, and tax docs.
Draw or type your signature and embed it permanently in the PDF — portable across every reader.
Lock annotations permanently into the page so nothing shifts or disappears when you share the file.
Share your annotated PDF to email, Drive, Dropbox, or anywhere else — in one tap.
Pricing
Start free. Upgrade when you're ready. Less than a coffee a year.
Try it first
3-Day Trial
Free
Full Pro access for 3 days.
No credit card required.
Best value
Pro
$3.99 / yr
Under 34¢ per month.
Cancel any time.
Always free
Free
$0
Core features, ad-supported.
No time limit.