Why can't extract text from pdf?

[daitranthanhhoa]

Hi,
I had try upgrade to Version 7.6.15. But It still Occur Exception: "Object reference not set to an instance of an object."
Same data test: https://drive.google.com/file/d/1ViHqDF ... sp=sharing

If i use your temp version , it can get text. But Text return not correct.
Ex: Text of PDF open by Browser and copy is "ベッセル総合カタログ"
But lib return "ベッセル૯߹Χタϩά"

[Brian.Li]

Hello,

I tested your case and did reproduce your issue. I have logged it in our bug tracking system with the ticket SPIREPDF-4440. If there is any update, we will let you know. Apologize for the inconvenience caused.

Sincerely,
Brian
E-iceblue support team

[daitranthanhhoa]

Hi,
Have the solution for this problem?

[Brian.Li]

Hello,

Thanks for your follow up.
I just checked the status of the issues SPIREPDF-4440, and found it has been resolved. It is now under the testing phase. Once it passes the test, we will prepare a new version for you.

Sincerely,
Brian
E-iceblue support team

[daitranthanhhoa]

Can you provider a tmp version?

[Brian.Li]

Hello,

Thanks for your response and sorry for the late reply as weekend.
I'm sorry that this issue is still in the testing phase. To ensure that the fix for this issue does not impact other cases, we will need to wait until it passes testing before we can provide you with a new version. We are sorry for the inconvenience caused.

Sincerely,
Brian
E-iceblue support team

[Brian.Li]

Hello,

Greetings from E-iceblue!
Glad to inform you that we just released Spire.PDF Pack(Hot Fix) Version:7.8.2 which fixes the issue SPIREPDF-4440, please download it from the following links to test on your side. Looking forward to your test result.
Website link: https://www.e-iceblue.com/Download/down ... t-now.html
Nuget link: https://www.nuget.org/packages/Spire.PDF/7.8.2

Sincerely,
Brian
E-iceblue support team

[daitranthanhhoa]

I had try upgrade to Ver 7.8.2
It not occur error: "Object reference not set to an instance of an object."
But text is Japanese still return not correct:
Text of PDF is: ベッセル総合カタログ
Sprire PDF return: ベッセルタ

[Brian.Li]

Hello,

Thanks for your feedback and sorry for the late reply as weekend.

When opening your PDF file in Adobe, and then exporting it to a TXT file, you will find that some characters will be missing and some garbled characters in the result file.
Besides, if you open your PDF file in Adobe and copy the content directly, and then paste it to a TXT file, you will get garbled characters.
All these indicate that this issue is due to an error in the content of your file. It is not a bug with our product. Hope you can understand.

Sincerely,
Brian
E-iceblue support team

[daitranthanhhoa]

It seems that spire is not supporting some fonts.
I try export text by Adobe Acrobat, It can export text ok.

[Brian.Li]

Hello,

Thanks for your feedback.
I used several versions of Adobe Acrobat to export the text in "errorgettext.pdf", but all got the same result (some characters were missing, and some garbled characters). Attached is my exported result. Which version of Adobe Acrobat do you use and how did you extract the text? Some screenshots might help a lot. Thanks in advance.
Besides, if you are testing other files, please provide us with the corresponding files.

Sincerely,
Brian
E-iceblue support team

[daitranthanhhoa]

I attach 1 simple data test:
I using Acrobat Pro DC
Export : Select File -> Export To -> Text (Plain)

[Brian.Li]

hello,

Thanks for providing more details.
I installed an Adobe Acrobat v2015 and extracted the text in the PDF file you provided, I did get the correct result.

But since this can only get the correct result with a specific version of Adobe Acrobat (We use Adobe Acrobat v2019/v2020, neither of them can be extracted correctly), we need to further investigate whether the extraction failed due to the document itself.

Anyway, I have posted this issue to our Dev team. We will inform you as soon as there is any update.

Sincerely,
Brian
E-iceblue support team