What is CoomerDL?

CoomerDL is a desktop application that allows you to download images and videos from supported websites easily. It has a user-friendly interface and supports various file types and extensions.

How do I download images and videos using CoomerDL?

Simply open the app, enter the URL of the image or video you wish to download, and click the download button. The app will handle the rest and provide real-time progress updates.

Is CoomerDL available for Windows and Linux?

Yes. CoomerDL is available for Windows 10, Windows 11, and Linux.

How can I support the development of CoomerDL?

You can support the project by making a donation Buy Me a Coffee, or Patreon. Your support is highly appreciated!

Can I contribute to the development of the app?

Yes! CoomerDL is open-source. Contributions are welcome on the official GitHub repository. You can also join the community on Discord to discuss the project.

GitHub Repository
Join Discord

Where can I download the latest version of CoomerDL?

You can download the latest version of the application from the GitHub releases page.

Why does 🔵 nX.coomer.su incorrect. Trying next… appear?

Why it happens

Coomer hosts each file on various rotating subdomains (n1.coomer.su, n2.coomer.su, etc.). Some nodes are kept in reserve and respond 403 Forbidden. The CoomerDL downloader tests them in order until finding an available one. It is not a fault of the program or the user; it is part of the normal functioning of the site.

→ See "General troubleshooting" for common solutions.

Why do I see 🟡 nX.coomer.su not accessible yet … getaddrinfo failed?

Why it happens

This message indicates that the subdomain has no DNS record at that moment, so its IP cannot be resolved. Coomer temporarily disables nodes to balance load. This does not imply a problem with CoomerDL or the user's configuration.

→ See "General troubleshooting" for common solutions.

Why does 🔴 Error: Request failed with status code 403 appear?

Why it happens

This error occurs when Coomer's DDOS protection (DDOS-Guard) blocks the request. It can happen due to making too many requests in a short time, temporary IP blocking, or when the specific subdomain is temporarily offline.

→ See "General troubleshooting" for common solutions.

General troubleshooting tips

Common solutions (in order of effectiveness)

  • Wait a few minutes and retry - Active nodes change frequently.
  • Limit simultaneous downloads to 3-5 - Reduces server load and improves stability.
  • VPN considerations:
    • If your ISP blocks subdomains, try using a VPN.
    • If you're using a VPN and downloads are slow, try disabling it temporarily.
  • Verify your connection - Check that the website opens in your browser.
  • Ensure sufficient disk space - Make sure you have enough free space on the destination disk.

Additional support

For additional help, you can join the Discord community or report problems on the GitHub repository.

Why do I get <filename>.temp (or .part) files that never finish?

Why it happens

CoomerDL downloads every file in chunks. While the file is still being assembled it is written with a temporary suffix (.temp, .part, .tmp_). When all chunks pass the checksum the file is renamed to its final name. If the connection breaks—e.g. DDOS-Guard returns 403, the rotating sub-domain goes offline, DNS fails to resolve, or your ISP/VPN drops packets—the rename never occurs and the temp file is left behind.

Typical causes

  • Rotating nodes or DDOS-Guard reset on coomer.su / kemono.su
  • Too many parallel chunks (site rate-limits above ~3-5 connections)
  • Disk issues (no space or antivirus locking the temp file)
  • App crash / forced close while the transfer is active

How to fix or avoid it

  • Lower max simultaneous downloads to 3–5
  • If using a VPN, try another exit node; if not, test with a VPN
  • Check free space and write permissions on the destination drive
  • It's safe to delete zero-byte .temp files manually