magnetgrouplabs/myjdownloader-extension-mv3 v2026.07.12

MyJDownloader Extension MV3 v2026.07.12

on GitHub

MyJDownloader Extension MV3 v2026.07.12

Click'n'Load works again, including remote JDownloader setups (Docker / NAS)

This release fixes the long-standing issue where CNL silently failed: hoster pages reported "successfully transferred" while nothing ever arrived in JDownloader (#2, #6).

What was wrong

• Captured CNL payloads were written to a storage flag nothing read, or sent still-encrypted with no device selected.
• The fetch/XHR interceptor ran in the isolated content-script world, which cannot see the page's real network calls under Manifest V3.
• The declarativeNetRequest rules only "allowed" requests to 127.0.0.1:9666, which fails outright when JDownloader is not on the same machine.

What changed

• Captured CNL requests now flow through the same in-page toolbar and device picker used for normal "add link" requests, wrapped as a dummycnl.jdownloader.org URL that JDownloader decrypts locally. This works no matter where JDownloader runs, and lets you choose the target device.
• Interception moved to a MAIN-world content script (fetch, XHR, and form submits), plus network-level capture via webRequest and faked local responses via declarativeNetRequest redirects. This also covers <iframe> and <script>-based CNL patterns, and Brave.

Note: the extension now requests the webRequest permission (observation only, used to read CNL payloads at the network layer).

Internal

• Removed roughly 1,300 lines of dead MV2-migration leftovers (BackgroundController, CnlService, the old route table).
• Test suite: 171 passing.

Credits

• @Krux86 for the root-cause analysis (#6) and the complete CNL fix (#7), tested end-to-end against a Docker-hosted JDownloader.
• @BlackScript for the early groundwork on MV3 CNL interception (#1).
• @trohnjavolta, @pchristod, and @CL1302 for the reports and testing on #2.

Installation

1. Download myjdownloader-extension-mv3-2026.07.12.zip and extract it
2. Open chrome://extensions/ and enable Developer mode
3. Click Load unpacked and select the extracted folder
4. Log in to your MyJDownloader account via the popup