Download Accelerator – Chrome Extension

Features

⚡ Parallel connections

Split each file into pieces and download them simultaneously over up to 16 connections.

⏸ Pause & Resume

Stop and continue any download at any time without losing progress.

📊 Live progress

Per-connection speed lanes, real-time transfer speed, and ETA.

🖱 Right-click download

"Download with Download Accelerator" on any link via the context menu.

📁 Custom folder

Choose the destination folder for each download session.

🔄 Intercept mode

Optionally capture all browser downloads automatically.

Two Modes

Works out of the box

Browser Mode

No installation required. Downloads are handled directly in the browser using parallel Range requests via the Fetch API.

Optional · Recommended

Native Mode

A small native helper app opens true parallel TCP connections over HTTP/1.1, bypassing Chrome's HTTP/2 multiplexing. Supports authenticated downloads via session cookies.

Native Host Installation

Download or clone the repository, then run the installer — no Extension ID needed, it's pre-configured for the Chrome Web Store version.

macOS

cd native_host
./install.sh

To build the binary yourself (requires Homebrew Python):

cd native_host
./build.sh
./install.sh

Windows

cd native_host
install.bat

To build the binary yourself (requires Python 3):

cd native_host
build.bat
install.bat

Developers: pass your own Extension ID as an argument to override the default:
./install.sh YOUR_ID / install.bat YOUR_ID