[ 
https://issues.apache.org/jira/browse/PDFBOX-5231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

LuoWeiWei updated PDFBOX-5231:
------------------------------
    Description: 
*Text part in converted jpg looks particularly unclear like attached picture.*

*The pdf url:*

*https://yunxin-solution.netease.im/yunxin/58457323-7e83-4e92-9089-b804786ff556.pdf*

*When I use the same jar to convert in my local environment and other server, 
it turns to be clear .*

*So I doubt it may be caused by system environment, and it's system info:*

_Linux kp-kylin-04 4.19.90-17.5.ky10.aarch64 #1 SMP Fri Aug 7 13:35:33 CST 2020 
aarch64 GNU/Linux_

Java(TM) SE Runtime Environment (build 1.8.0_251-b08)

*And there are some warning message:*

_July 01, 2021 6:11:46 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode_
 _Warning: No Unicode mapping for CID+3108 (3108) in font SPIATY+FZLTHJW--GB1-0_
 _July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
toUnicode_
 _Warning__: No Unicode mapping for CID+3108 (3108) in font 
SPIATY+FZLTHJW--GB1-0_
 _July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
toUnicode_
 _Warning__: No Unicode mapping for CID+3108 (3108) in font 
SPIATY+FZLTHJW--GB1-0_

  was:
*Text part in converted jpg looks particularly unclear like attached picture.*

*When I use the same jar to convert in my local environment and other server, 
it turns to be clear .*

*So I doubt it may be caused by system environment, and it's system info:*

_Linux kp-kylin-04 4.19.90-17.5.ky10.aarch64 #1 SMP Fri Aug 7 13:35:33 CST 2020 
aarch64 GNU/Linux_

Java(TM) SE Runtime Environment (build 1.8.0_251-b08)

*And there are some warning message:*

_July 01, 2021 6:11:46 AM org.apache.pdfbox.pdmodel.font.PDType0Font toUnicode_
_Warning: No Unicode mapping for CID+3108 (3108) in font SPIATY+FZLTHJW--GB1-0_
_July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
toUnicode_
_Warning__: No Unicode mapping for CID+3108 (3108) in font 
SPIATY+FZLTHJW--GB1-0_
_July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
toUnicode_
_Warning__: No Unicode mapping for CID+3108 (3108) in font 
SPIATY+FZLTHJW--GB1-0_


> convert pdf to jpg by pdfBox2.0.23
> ----------------------------------
>
>                 Key: PDFBOX-5231
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5231
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 2.0.23
>         Environment: Linux kp-kylin-04 4.19.90-17.5.ky10.aarch64 #1 SMP Fri 
> Aug 7 13:35:33 CST 2020 aarch64 GNU/Linux
> Java(TM) SE Runtime Environment (build 1.8.0_251-b08)
>            Reporter: LuoWeiWei
>            Priority: Blocker
>         Attachments: private.png
>
>
> *Text part in converted jpg looks particularly unclear like attached picture.*
> *The pdf url:*
> *https://yunxin-solution.netease.im/yunxin/58457323-7e83-4e92-9089-b804786ff556.pdf*
> *When I use the same jar to convert in my local environment and other server, 
> it turns to be clear .*
> *So I doubt it may be caused by system environment, and it's system info:*
> _Linux kp-kylin-04 4.19.90-17.5.ky10.aarch64 #1 SMP Fri Aug 7 13:35:33 CST 
> 2020 aarch64 GNU/Linux_
> Java(TM) SE Runtime Environment (build 1.8.0_251-b08)
> *And there are some warning message:*
> _July 01, 2021 6:11:46 AM org.apache.pdfbox.pdmodel.font.PDType0Font 
> toUnicode_
>  _Warning: No Unicode mapping for CID+3108 (3108) in font 
> SPIATY+FZLTHJW--GB1-0_
>  _July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
> toUnicode_
>  _Warning__: No Unicode mapping for CID+3108 (3108) in font 
> SPIATY+FZLTHJW--GB1-0_
>  _July_ _01, 2021 6:11:46_ _AM_ _org.apache.pdfbox.pdmodel.font.PDType0Font 
> toUnicode_
>  _Warning__: No Unicode mapping for CID+3108 (3108) in font 
> SPIATY+FZLTHJW--GB1-0_



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