Documentation

1. Download an ordinary file

1. Open CatFrame, click "Add URL" in the toolbar (or press Ctrl+N）；
2. Paste the link → choose the save folder and thread count → "Start Download";
3. In the task list you can see progress, speed and time remaining.

2. Download a video (Bilibili as an example)

1. Paste the video page address;
2. The app automatically opens aquality selectionwindow — just pick a tier;
3. For tiers that require sign-in (1080P high-bitrate / 4K, etc.), go to "Settings → Advanced", pick the browser you use, or specify an exported sign-in info file.

3. Manage tasks

Right-click a task:Start / Pause / Open / Open folder / Delete。

• "Pause"only stops the transfer; what's already downloaded is kept, and clicking "Start" willresume from the breakpoint；
• "Delete" asks whether to also delete the local file (it doesn't by default).

4. Activate Pro

1. On theOrder page choose a plan and place your order;
2. After payment, use your order number on theOrder lookuppage to retrieve your license key;
3. Open CatFrame → "Settings → Pro License" → paste the license key → Activate.

After activation the appverifies the license offline, so even if the server is temporarily unavailable it won't affect use (a limited offline grace period is allowed); one license key works on 1 device by default (unlink the old device first when switching).

5. FAQ

• Slow speed?Try increasing the thread count; some sites cap each connection, so multi-threading is what helps. Also check whether "Settings → Global speed limit" is set very low.
• Shows "Unknown publisher"?That's because the installer isn't code-signed; just click "More info → Run anyway". You can also verify it yourself with the checksum — seethe download page。
• Only low quality on Bilibili?When not signed in you only see public tiers; configure the cookie to see higher ones.
• A task shows as failed?Double-click the task to open its details; the log there states the exact reason.