Bug Reports

[BadRobat]

Hi all,

After downloading a book, I like to rate how much I like it and the file quality using the 5-star system that is on the download page above the detailed book description. Lately, I only see that one of the two abailable ratings will save — either file quality, or how much I enjoy the book, whichever I rate first. Refreshing and coming back to the page still does not change that only one rating of the two available ever saves and shows up. This is disappointing, because the green file quality rating is especially important for users with limited daily downloads available. I frequently used it to sort which version of a classic novel i felt would be most likely to be the type and quality I was looking for — I enjoy particularly PDF versions of scanned copies of actual books, for example, but there is a wide variability in how readable they can be, and it can take a few version checked before I find one that is to my liking.


Anyway, I am hoping for answer to this bug, which is new to me in the last two weeks to a month. Prior to recently, I had had no issues. Thanks for reading and please let me know if there are things I can try to help restore this functionality.

Hello! Thank you for your report! So that we can look into this situation in detail, please send us a short video demonstrating the problem, and include a link to the book, as well as information about your device and browser. Please send the information to support@z-lib.fm

[pama]

was zlib encoundered under malicious attack recently, as ive detected lotl virus

[Naughty_Stitch]

was zlib encoundered under malicious attack recently, as ive detected lotl virus

Hello! Could you please clarify what kind of virus it is? What browser were you using?

[bookfrog]

Getting this error when trying to download files either via chrome or edge. Also tried Firefox. Cookies are definitely enabled.

Started this week.

Please enable cookies.
Error 1034
Ray ID: a4eb58b0fea2aae0 • 2026-10-22 20:45:34 UTC
Edge IP Restricted
What happened?
You've requested a page on a website that is part of the Cloudflare network. The host (dln1.ncdn.ec) resolved to an IP address that the owner of the website does not have access to.

What can I do?
If you are a visitor of this website:
Please try again in a few minutes.

If you are the owner of this website:
Check your DNS records to ensure they are pointed to the IP address(es) you were assigned at registration.

Was this page helpful? Yes No
Thank you for your feedback!
Cloudflare Ray ID: a4eb58b0fea2aae0 • Your IP: Click to reveal 2607:fea8:fc01:800c4001:5419:78e0 • Performance & security by Cloudflare

[Ligia]

Getting this error when trying to download files either via chrome or edge. Also tried Firefox. Cookies are definitely enabled.

Started this week.

Please enable cookies.
Error 1034
Ray ID: a4eb58b0fea2aae0 • 2026-10-22 20:45:34 UTC
Edge IP Restricted
What happened?
You've requested a page on a website that is part of the Cloudflare network. The host (dln1.ncdn.ec) resolved to an IP address that the owner of the website does not have access to.

What can I do?
If you are a visitor of this website:
Please try again in a few minutes.

If you are the owner of this website:
Check your DNS records to ensure they are pointed to the IP address(es) you were assigned at registration.

Was this page helpful? Yes No
Thank you for your feedback!
Cloudflare Ray ID: a4eb58b0fea2aae0 • Your IP: Click to reveal 2607:fea8:fc01:800c4001:5419:78e0 • Performance & security by Cloudflare

Are you connecting from Canada? If so, unfortunately, direct downloads are temporarily unavailable due to a block. Please use a VPN or an alternative method to download.

[bookfrog]

Yep from Canada...

[user294de3]

Hi!

After clicking the download icon, I can see and read the entire file. But I continue to click the "save" icon and receive no response.

I have tried many times. What is the matter?

Thanks in advance!

[BadRobat]

Hi!

After clicking the download icon, I can see and read the entire file. But I continue to click the "save" icon and receive no response.

I have tried many times. What is the matter?

Thanks in advance!

Hello! Please provide additional information by sending an email to support@z-lib.fm. Include your account email address, your browser, your country of residence, and a link to the file you are trying to download.

[SleepingPanda]

Hello, I've been trying to upload books through FTP and they seem to be stuck on "processing" for days now. Is there something I can do to fix this?

[Vika]

Hello, I've been trying to upload books through FTP and they seem to be stuck on "processing" for days now. Is there something I can do to fix this?

You're using web-ftp. That's the one that goes 'processing'. Ie the one via the website itself.

That has a max capacity of 100mb per file. If you try to go over that, it'll just sit there saying 'processing' forever.

To get around that, download a ftp client: FileZilla, WinSCP, Cyberduck, etc

Then go back to web-FTP. If you look at the top, you'll see it says 'add book' --- 'FTP Collections' --- 'My Uploads'

You are currently on 'add book'. Go to 'FTP Collections', and click the green button marked 'Create FTP Collection'. Give it a name and select books or articles - you can't mix them in the same collection. Once you ok that, it will appear on the screen. Navigate over to where it says 'Credentials' and click on that. You'll get a box with the details you enter into your ftp client.

Put those details in in the client and it'll connect. You can drag your books over en-masse into that. I typically go for 8-10 per collection. It will take thousands, but takes exponentially longer to process the more you put in it.

When they're all in, go back to 'FTP Collections' on the website, and this time click the blue button marked 'start processing' As a rule of thumb, 10 books takes 20 minutes to process. It may be longer if the site is particularly busy.

Once done that will change to 'publish books'. Do not click that. Instead, click the name of your collection. You'll go into it, and see all the books listed there. You can click each filename to add details to that particular book, then publish them one at a time or all at once in there when done.

That set of Сredentials is now spent. You'll have to create another collection to upload more books this way.

Once all books in the collection have been published, its safe to delete the collection.

Be aware FTP still has a limit, which is 1gb per book. Try to post a book larger than that and it won't work. You will have to edit the file to reduce its size, but that's beyond the scope of uploading them.