📄 KillerPDF

Free. Open. No account. No subscription. No telemetry.

Built by a field tech who hates Adobe.

⬇️ Download for Windows

Windows 10/11 x64 · .NET Framework 4.8

Or install via winget install killerpdf

Version: v1.5.0

See it in action

Six built-in themes — switch live in the app. Dark, Light, High Contrast, Blood, Greed, and Cyanotic.

What it does

👁️

View & Navigate

High-quality bitmap rendering via PDFium. Page thumbnails, Ctrl+scroll zoom, and keyboard shortcuts for fast navigation.

🔗

Merge & Split

Combine multiple PDFs into one or extract selected pages into a new file. Drag-and-drop page reordering in the sidebar.

✏️

Edit Text

Double-click any line of text to edit it inline. Font matching from the original PDF preserves the look of the document.

🖍️

Annotate

Text boxes, freehand drawing, and highlight overlays with customizable colors, sizes, and opacity. Undo and clear per page.

✍️

Signatures

Draw reusable signatures or import a PNG/JPG/BMP image as a signature. Click to place anywhere on a page. Signatures persist between sessions.

🔍

Search & Select

Ctrl+F full-text search with highlighted results. Drag-select to copy text, or Ctrl+A to grab the whole page.

🖨️

Print

Print with annotations flattened into the output. Ctrl+P or toolbar button sends directly to the system print dialog.

💾

Install or Run Portable

Three ways to get it running: drop the EXE anywhere and run it directly, use the built-in installer, or pull it from winget. No admin rights needed.

🔐

Password-Protected PDFs

Opening an encrypted PDF prompts for the password instead of throwing an error. Works seamlessly — the decrypted copy is held in temp for the session.

📑

Flatten PDF

Save a fully uneditable version by rasterizing every page at 150 DPI via PDFium. Standard practice in legal, compliance, and reporting workflows.

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