OpenPrinting/cups-filters

View on GitHub

filters, backends, driverless utility, ... - Everything which CUPS 2.x needs to be used on non-Mac systems

Stars: 197
Forks: 158
Open beginner issues: 0
Indexed issues: 145
Avg merge: 3h 29m
Merged PRs (30d): 1

Dominant language: C
License: Apache-2.0
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

145 open issues indexed

pdftopdf outputs a single copy when the job's copy count is passed only as argv[4] (multiple copies print as one) Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

OpenPrinting/cups-filters#731 · 4 comments · Opened Sep 19, 2026
`pdftopdf` filter sometimes drops first page Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

OpenPrinting/cups-filters#730 · Opened Sep 19, 2026
PDF pages which include the same graphics more than once not printed Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

OpenPrinting/cups-filters#729 · 3 comments · Opened Sep 18, 2026
bannertopdf generates damaged PDF that pdftopdf/qpdf rejects — GNOME Test Page fails with universal filter failed Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

OpenPrinting/cups-filters#728 · 1 comment · Opened Sep 17, 2026
Universal filter check error in configure.ac Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

OpenPrinting/cups-filters#724 · Opened Sep 5, 2026
pdftopdf injects an unwanted 90° rotation on an already-correctly-oriented PDF, unless orientation-requested is explicitly forced Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

OpenPrinting/cups-filters#723 · 4 comments · Opened Sep 3, 2026
HP OfficeJet Pro 9010: driverless URF job fails when N-up and duplex are combined Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

OpenPrinting/cups-filters#721 · 2 comments · Opened Aug 26, 2026
rastertopclx: a truncated row discloses residual heap bytes Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

OpenPrinting/cups-filters#718 · Opened Aug 2, 2026
rastertoescpx: softweave product indexes beyond DotBands Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

OpenPrinting/cups-filters#716 · Opened Aug 2, 2026
rastertoescpx: a PPD row-count override causes a heap-buffer-overflow Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

OpenPrinting/cups-filters#715 · Opened Aug 2, 2026
Foomatic renderer JCL prefix overflows header[128] Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

OpenPrinting/cups-filters#714 · Opened Aug 2, 2026
Foomatic empty JCL token writes before a heap line Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

OpenPrinting/cups-filters#713 · Opened Aug 2, 2026
rastertopclx: RGB color space with one channel causes a short-row read Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

OpenPrinting/cups-filters#712 · Opened Aug 2, 2026
rastertoescpx: zero vertical resolution causes division by zero Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

OpenPrinting/cups-filters#711 · Opened Aug 2, 2026
rastertoescpx: resolution unit growth overflows and loops forever Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

OpenPrinting/cups-filters#710 · Opened Aug 2, 2026
Planar RGB Raster consumed as chunked RGB Open

Difficulty 4/5 3-5 days Newbie friendliness 64/100

OpenPrinting/cups-filters#709 · Opened Aug 2, 2026
HP Smart Tank 7600 does not eject the last sheet after automatic duplex printing of documents with an odd number of pages (IPP Everywhere) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenPrinting/cups-filters#708 · Opened Jul 21, 2026
rastertoescpx divides by zero when DotRowStep is zero Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

OpenPrinting/cups-filters#706 · 1 comment · Opened Jul 19, 2026
rastertopclx reads past a decoded raster line in CompressData Open

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

OpenPrinting/cups-filters#705 · 1 comment · Opened Jul 19, 2026
NUL-leading command records read before a stack buffer Open

Difficulty 2/5 Half a day Newbie friendliness 76/100

OpenPrinting/cups-filters#704 · 1 comment · Opened Jul 19, 2026
Driverless IPP Everywhere: PDF jobs complete successfully but produce no output on Brother HL-3172CDW Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OpenPrinting/cups-filters#703 · Opened Jul 14, 2026
Mirror Printing "lpr -o mirror filename" doesn't work. Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

OpenPrinting/cups-filters#700 · 2 comments · Opened Jul 2, 2026
imagetoraster dithering without gamma, too dark image Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

OpenPrinting/cups-filters#699 · 1 comment · Opened Jun 28, 2026
PPD attributes values Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenPrinting/cups-filters#698 · Opened Jun 26, 2026
Potential NULL pointer dereference cases Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

OpenPrinting/cups-filters#697 · 1 comment · Opened Jun 26, 2026
Division by zero Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

OpenPrinting/cups-filters#689 · Opened Apr 14, 2026
Division by zero Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

OpenPrinting/cups-filters#688 · 3 reactions · Opened Apr 14, 2026
Abort signal imagetopdf Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

OpenPrinting/cups-filters#687 · Opened Apr 14, 2026
Abort signal imagetopdf Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

OpenPrinting/cups-filters#686 · Opened Apr 14, 2026
Abort signal imagetoraster Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

OpenPrinting/cups-filters#685 · 3 reactions · Opened Apr 14, 2026
Ghostscript CUPS device lacks multi-threading Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

OpenPrinting/cups-filters#668 · 1 comment · Opened Jan 4, 2026
Raster filter crops to ImageableArea, PDF filter fills blank to PaperDimension Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OpenPrinting/cups-filters#666 · 3 comments · Opened Dec 28, 2025
cups fails to detect duplexer on HP m479fdw printer; this is a regression Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OpenPrinting/cups-filters#665 · 5 comments · Opened Dec 15, 2025
HP LaserJet Pro 4002 ignores InputSlot when using driverless Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OpenPrinting/cups-filters#664 · 1 comment · Opened Nov 12, 2025
On the CLI, lp and lpr don't print plain ASCII textfiles Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

OpenPrinting/cups-filters#684 · 14 comments · Opened Oct 29, 2025
Canon Selphy CP1500 driverless image cropped Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

OpenPrinting/cups-filters#661 · 12 comments · Opened Oct 28, 2025
IPPEverywhere will print first page only on two tray printer Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OpenPrinting/cups-filters#660 · 27 comments · Opened Oct 21, 2025
Color management not working with temporary driverless print queues for IPP Everywhere Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenPrinting/cups-filters#655 · 3 comments · Opened Aug 29, 2025
Canon maxify mb2750 spews blanks Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenPrinting/cups-filters#653 · Opened Aug 14, 2025
HP Color Laserjet Pro MFP 4302dw IPP driver broken ? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenPrinting/cups-filters#652 · 4 comments · Opened Jul 16, 2025
cups-filter still ignores landscape orientation Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OpenPrinting/cups-filters#638 · 33 comments · Opened May 11, 2025
Lack of error handling for realloc calls, posing risks of memory leaks and null pointer dereferences Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenPrinting/cups-filters#636 · 1 comment · Opened May 8, 2025
Cannot install Canon MF657Cdw / MF650C Series (IPP Everywhere) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenPrinting/cups-filters#635 · 11 comments · 4 reactions · Opened May 5, 2025
Collab needed Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

OpenPrinting/cups-filters#634 · Opened Apr 27, 2025
CUPS 2.4.1 label printing is sideways across multiple labels (2.3.1 worked fine) Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

OpenPrinting/cups-filters#631 · 9 comments · Opened Apr 1, 2025
IPP Everywhere prints in monochrome on a color printer Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenPrinting/cups-filters#625 · Opened Mar 3, 2025
Canon foomatic-rip cque Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

OpenPrinting/cups-filters#623 · Opened Feb 27, 2025
cupsRasterReadHeader2 changes from 2.3.2 to 2.4.2 Open

investigating

OpenPrinting/cups-filters#628 · 8 comments · 1 assignee · Opened Feb 26, 2025
Margin Parameters Not Affecting Output Consistently Across PDFs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OpenPrinting/cups-filters#622 · 1 comment · Opened Feb 25, 2025
`universal` Filter May Produce Garbled Output when Spoolfile Originates from AdobeReader on Win 10 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OpenPrinting/cups-filters#621 · Opened Feb 17, 2025

OpenPrinting/cups-filters

Get new issues in your inbox