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Open SourcePDFAnnotation
LeedPDF

LeedPDF

Tool

Highlight, comment, doodle—do it your way. Lightweight, private, and open-source PDF editor for mouse, touch, or stylus.

Why we built this

01 · The Problem

Annotating PDFs felt harder than it should. Tools were bloated, expensive, or required cloud uploads for your sensitive documents.

02 · The Opportunity

What if annotating felt like jotting in the margins of a notebook—quick, calm, and private?

03 · Our Approach

We built a lightweight, ADHD-friendly editor with natural annotation tools. No account needed, works offline, open source under AGPL.

04 · Why It Matters

"Your brain deserves tools that just work. LeedPDF is free, private, and designed to help you think clearer."

Best Features

Natural Highlighting

Natural Highlighting

High-contrast highlights that never fight the text.

Comments & Notes

Comments & Notes

Sticky notes and comments right where you need them.

Doodle & Draw

Doodle & Draw

Circle, underline, or sketch ideas with freehand drawing.

Touch & Stylus

Touch & Stylus

Pressure-sensitive input for mouse, touch, or pen.

ADHD-Friendly

ADHD-Friendly

Clean, calm interface designed to reduce visual noise.

Private & Offline

Private & Offline

No uploads, no accounts, no tracking. Works fully offline.

Cross-Platform

Cross-Platform

Free on web, with native apps for Windows and Mac.

What people say

"It's really cute 💚 the drawing works well with my Apple Pencil."

"LeedPDF looks slick, and offline support is a big win."

"Very efficient for my study notes."

"Useful for annotating all my technical drawings."

"I use LeedPDF for annotating my course material, I love the UI."

"Perfect for studying on my iPad, I use it almost everyday!"

"Awesome for creative sketching and ideation."

"Makes reviewing documents really enjoyable. I can annotate and share with clients in minutes."

"I review dozens of documents every week for my classes. LeedPDF makes it so much easier to mark up and organize everything."

"Really useful for signing docs on the go. Love that it's open-source too."

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Want us to build for you?

The same team behind LeedPDF, Golden Day, PinkRain and more is available as your product design & development partner.

Product Design
Custom Software
Brand Identity
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