NARROWWORKS

CATCH
Play it. CATCH finds it,
save only what you need.

A local media download tool for Windows + Chrome. No complicated setup—play, detect, and CATCH.

FREE ₩0Windows 10 / 11ChromeLocal processing
CATCH · CURRENT PAGE
CATCH Current Page interface showing detected media and download controls
DirectHLSDASHVideo + Audio PairingFFprobe VerifyDRM Detection

HOW CATCH WORKS

Downloading video should not be complicated.

Four simple steps are enough. No technical vocabulary required.

01

Open the page

Open a page containing media you have permission to save.

02

Play the media

Play the video as you normally would.

03

CATCH detects it

CATCH finds the media sources that are available.

04

Smart Download

CATCH selects the best available flow, downloads it, and verifies the result.

WHY CATCH

Fewer clicks. More certainty.

CATCH is designed to organize the download process—not bury you in a long list of sources.

SMART DOWNLOAD

Automatically picks the right source

CATCH organizes the download flow so you do not have to sort through complicated source lists yourself.

SOURCE QUALITY

Analyzes the quality offered by the source

See and use the quality range that the original media source actually provides.

VIDEO + AUDIO

Automatically pairs separate video and audio

When needed, the local engine combines separate video and audio streams into one file.

VERIFIED DOWNLOAD

Verifies the actual file after completion

FFprobe-based verification checks the downloaded result after the job finishes.

LOCAL PROCESSING

Downloads and processing stay on your PC

CATCH is designed around local media processing on the user's computer.

MP3 / AUDIO

Save detected audio as original or MP3

PRO provides a more flexible flow for saving detected audio.

DRM DETECTION

Detects protected content and blocks it

CATCH does not provide DRM circumvention features.

DOWNLOAD MANAGER

See active jobs and completed downloads in one place

Track current downloads and completed files more easily.

PRODUCT UI

Show the product, not just the feature list.

01CATCH Popup
CATCH Current Page interface
02Download History
CATCH Download History interface
03PRO Features
CATCH PRO Features interface
04Downloads Manager
CATCH Downloads Manager interface
05Settings
CATCH Settings interface

FREE / PRO

Start free. Upgrade when you need more.

CREATOR and Lifetime plans are not displayed on the landing page at this time.

FREE

₩0

Start using CATCH with no upfront cost

  • Smart Download
  • Up to 1080p
  • 1 concurrent download
  • Up to 5 successful downloads per day
  • Higher qualities shown + locked
  • Basic download management
Get CATCH free

SOURCE MAX · PRO

Up to the quality the source actually provides.

CATCH does not artificially upscale video. When the original source genuinely provides higher quality, CATCH can analyze and use it.

4K5K6K8K+

LOCAL PROCESSING

Downloads stay on your PC.

CATCH's core media-processing flow runs locally.

  • CATCH Local Engine connected through Native Messaging
  • Local FFmpeg / FFprobe processing
  • Downloaded files are stored on the user's PC
  • No collection of DRM keys or DRM license responses
  • No long-term storage of Authorization headers
  • No long-term storage of cookies
  • Anonymous error reporting only when explicitly enabled by the user
ChromeCATCH Extension
↕ Native Messaging
Windows PCCATCH Local Engine
↓
LocalMy files
OSWindows 10 / 11 x64

Current official desktop target

BROWSERGoogle Chrome

Based on the latest stable version

ARCHITECTUREExtension + Local Engine

Connects browser detection with local processing

INSTALL

Ready in three steps.

Download links are activated only after the official release URLs are confirmed.

1

Install CATCH for Windows

Install the local engine for Windows 10 / 11 x64.

2

Install the Chrome Extension

Install CATCH Extension from the Chrome Web Store.

3

Play and CATCH

Play a video and CATCH detects the available media sources.

Download CATCH for Windows · Coming soonInstall Chrome Extension · Coming soon

FAQ

Questions before you install.

A clear explanation of what CATCH can and cannot do.

Is CATCH free?

Yes. The FREE plan is ₩0 and includes Smart Download, up to 1080p, 1 concurrent download, and up to 5 successful downloads per day.

What is the difference between FREE and PRO?

PRO removes the daily download limit, supports up to 5 concurrent downloads, and includes Source Max, Batch Download, Subtitle, Auto Repair, Contact Sheet, Advanced Naming, Duplicate Detection, and MP3 / Audio.

Does it work on every website?

No. Detection or downloading may be limited by how a website delivers media, your permissions, security policies, or DRM.

Can CATCH download DRM-protected video?

No. CATCH does not provide DRM circumvention. When protected content is detected, the download is blocked and the user is informed.

What video quality is supported?

FREE supports up to 1080p. With PRO, Source Max can analyze and use higher quality when the original source actually provides it.

Can it handle 8K?

If the original source genuinely provides an 8K stream, it can be considered by Source Max in PRO. Not every video is available in 8K.

Can I save MP3 audio?

With PRO, the MP3 / Audio flow can save detected audio in its original format or as MP3.

What if video and audio are detected separately?

When needed, CATCH pairs Video + Audio sources and combines them through the local engine.

Where are downloaded files saved?

By default, CATCH can be configured to save files in the Windows Downloads folder or another location selected by the user.

Does CATCH upload my videos to a server?

Core media downloading and processing run on the user's PC. Anonymous error reporting is designed to operate only when explicitly enabled by the user.

Do you support operating systems other than Windows?

The current official target is Windows 10 / 11 x64 with the latest stable version of Google Chrome. Mac and Linux support are not promised at this time.

What should I do if a download fails?

A download can fail because of media-source availability, site policy, network conditions, or DRM. Check the failure reason, try again when appropriate, or use the support channel.

RESPONSIBLE USE

Only save content you are allowed to save.

CATCH is a tool for saving content you own, have permission to save, or are otherwise allowed to download. Users are responsible for complying with copyright and the relevant service terms. CATCH does not provide DRM circumvention features.