View Revisions: Issue #1011
| Summary | 0001011: Add PDF repair option for proxy printing | ||
|---|---|---|---|
| Revision | 2018-12-18 20:57 by rijkr | ||
| Additional Information | |||
| Revision | 2018-12-18 21:02 by rijkr | ||
| Additional Information | Use `pdf2ps` to check if PDF is corrupted. If corrupted, error messages will show on stdout. E.g. **** Error reading a content stream. The page may be incomplete.
Output may be incorrect. |
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| Revision | 2018-12-18 20:57 by rijkr | ||
| Description | IST: Uploaded PDF files (Web Print) might not have valid PDF format. These files don't get noticed, since they are shown correctly as SafePages. However, when these corrupted PDFs are proxy printed, CUPS filtering might deliver incorrect PDL (PostScript) so printed output will not be as expected (in some cases we saw just a blank page is printed). SOLL: Add configuration item to enable/disable repair of any PDF just before sending it to CUPS: "proxy-print.repair.enable" Y | N (default). |
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| Revision | 2018-12-19 13:55 by rijkr | ||
| Description | IST: Uploaded PDF files (Web Print) might not have valid PDF format. These files don't get noticed, since they are shown correctly as SafePages. However, when these corrupted PDFs are proxy printed, CUPS filtering might deliver incorrect PDL (PostScript) so printed output will not be as expected (in some cases we saw just a blank page is printed). SOLL: Add configuration item to enable/disable repair of any PDF just before sending it to CUPS: "proxy-print.repair.enable" Y | N (default). The repair is done with: gs -o repaired.pdf -sDEVICE=pdfwrite -dPDFSETTINGS=/prepress corrupted.pdfThe repair does take a few seconds, even for larger PDF files. https://superuser.com/questions/278562/how-can-i-fix-repair-a-corrupted-pdf-file : pdftocairo is also an option that works, but is not used for now: pdftocairo -pdf print.pdf print_repaired.pdf |
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| Revision | 2018-12-19 13:56 by rijkr | ||
| Additional Information | Use `pdf2ps` on command line to check if PDF is corrupted. If corrupted, error messages will show on stdout. E.g. **** Error reading a content stream. The page may be incomplete.
Output may be incorrect. |
||
| Revision | 2018-12-18 20:57 by rijkr | ||
| Steps To Reproduce | |||
| Revision | 2018-12-28 15:32 by rijkr | ||
| Steps To Reproduce | Reported by user: Corrupted PDF files were delivered by either Canon imageFORMULA p-150 or Canon imageFORMULA DR-2010M Document scanner. | ||
| Revision | 2019-01-07 20:12 by rijkr | ||
| Steps To Reproduce | |||
| Revision | 2019-02-27 10:30 by rijkr | ||
| Description | IST: Uploaded PDF files (Web Print) might not have valid PDF format. These files don't get noticed, since they are shown correctly as SafePages. However, when these corrupted PDFs are proxy printed, CUPS filtering might deliver incorrect PDL (PostScript) so printed output will not be as expected (in some cases we saw just a blank page is printed). SOLL: Add configuration item to enable/disable repair of any PDF just before sending it to CUPS: "proxy-print.repair.enable" Y | N (default). The repair is done with: pdftocairo -pdf print.pdf print_repaired.pdf. The repair does take a few seconds, even for larger PDF files. https://superuser.com/questions/278562/how-can-i-fix-repair-a-corrupted-pdf-file : Ghostscript prepress is also an option, but we found out that it does not repair in all cases: gs -o repaired.pdf -sDEVICE=pdfwrite -dPDFSETTINGS=/prepress corrupted.pdf |
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| Revision | 2019-02-27 10:31 by rijkr | ||
| Description | IST: Uploaded PDF files (Web Print) might not have valid PDF format. These files don't get noticed, since they are shown correctly as SafePages. However, when these corrupted PDFs are proxy printed, CUPS filtering might deliver incorrect PDL (PostScript) so printed output will not be as expected (in some cases we saw just a blank page is printed). SOLL: Add configuration item to enable/disable repair of any PDF just before sending it to CUPS: "proxy-print.repair.enable" Y | N (default). The repair is done with: pdftocairo -pdf print.pdf print_repaired.pdfThe repair action only takes a few seconds, even for larger PDF files. https://superuser.com/questions/278562/how-can-i-fix-repair-a-corrupted-pdf-file : Ghostscript prepress is an alternative, but we found out that it does not repair in all cases: gs -o repaired.pdf -sDEVICE=pdfwrite -dPDFSETTINGS=/prepress corrupted.pdf |
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