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OpenPrinting

19 indexed repositories · View on GitHub

cups
OpenPrinting CUPS Sources

C · 1750 stars
ipp-usb
ipp-usb -- HTTP reverse proxy, backed by IPP-over-USB connection to device

Go · 209 stars
system-config-printer
Graphical user interface for CUPS administration

Python · 204 stars
cups-filters
filters, backends, driverless utility, ... - Everything which CUPS 2.x needs to be used on non-Mac systems

C · 197 stars
libcups
OpenPrinting CUPS 3.x Library Sources

C · 81 stars
cups-browsed

C · 49 stars
splix
Splix is a driver for SPL printers (Samsung and several Xerox printers)

C++ · 48 stars
ghostscript-printer-app
Ghostscript Printer Application

PostScript · 44 stars
cups-snap
Complete CUPS printing stack in a snap

C · 24 stars
go-mfp
MFP: Go libraries and tools for Multi-Function Printers and scanners

Go · 23 stars
openprinting.github.io
Organization Pages for OpenPrinting

TypeScript · 18 stars
libcupsfilters

C · 17 stars
pappl-retrofit
PPD/Classic CUPS driver retro-fit Printer Application Library

C · 17 stars
foomatic-db
OpenPrinting printer support database

HTML · 14 stars
foo2zjs
foo2zjs printer drivers, with fixes. Imported from Debian's https://salsa.debian.org/printing-team/foo2zjs

C · 8 stars
fuzzing
Work on fuzzing OpenPrinting projects

C · 8 stars
libppd

C · 5 stars
legacy-drivers
In this repository we are hosting printer drivers which are not maintained any more by their original authors. This way they stay availab...

C · 5 stars
cpdb-rs

Rust · 2 stars

Beginner friendly Everything

Open All

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
IPP backend exits 0 instead of retrying as raster after document-format-error and failed Cancel-Job Open

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

OpenPrinting/cups#1703 · 2 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
Server seemingly randomly chooses between multiple certificates for IPPS Open

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

OpenPrinting/ghostscript-printer-app#27 · Opened Sep 16, 2026
proxy backend truncates system queue names longer than 30 characters (resource[32]): jobs from snap apps are held forever with "No such file or directory" Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

OpenPrinting/cups-snap#38 · Opened Sep 16, 2026
Intermittent empty Apple Raster output from PDF filter chain causes Samsung SPL timeout Open

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

OpenPrinting/libcupsfilters#250 · 8 comments · Opened Sep 15, 2026
Allow setting `host-aliases` option when running as snap service Open

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

OpenPrinting/ghostscript-printer-app#26 · Opened Sep 13, 2026
pdftopdf exits with status 1 (no error message) on PDFs with form fields lacking /N and /BBox Open

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

OpenPrinting/libcupsfilters#246 · 4 comments · Opened Sep 11, 2026
Support for blank MFG in device ID needed, such printers exist Open

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

OpenPrinting/libcupsfilters#244 · Opened Sep 11, 2026
libcupsfilters-2.2.1-4.4 breaks compatibility Open

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

OpenPrinting/libcupsfilters#242 · 2 comments · Opened Sep 9, 2026
The `--input-page-ranges` option needs to be ported to current, PDFio-based libcupsfilters Open

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

OpenPrinting/libcupsfilters#241 · 2 comments · Opened Sep 8, 2026
[Fedora45] libcupsfilters‑2.2.1‑2 has a series of printing issues. Open

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

OpenPrinting/libcupsfilters#239 · 9 comments · 1 reaction · Opened Sep 8, 2026
implicitclass backend: job cancelled on the printer (job-canceled-by-user, 0 sheets) while CUPS reports the job "completed successfully" Open

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

OpenPrinting/cups-browsed#76 · Opened Sep 5, 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
Investigate adding lq850 legacy printer driver Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

OpenPrinting/legacy-drivers#19 · Opened Sep 4, 2026
Preserve Ghostscript lx5000 legacy printer driver Open

good first issue help wanted

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

OpenPrinting/legacy-drivers#18 · Opened Sep 4, 2026
[Regression 2.1.1 → 2.2.x] pdftopdf no longer emits its `%%PDFTOPDF*` marker comments, so libppd re-applies `page-ranges` and silently drops pages Open

Difficulty 4/5 3-5 days Newbie friendliness 72/100

OpenPrinting/libcupsfilters#233 · 1 comment · 1 reaction · Opened Sep 4, 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
[Regression 2.1.1 → 2.2.1] Copy count lost for uncollated jobs: no -dNumCopies, single copy printed Open

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

OpenPrinting/libcupsfilters#231 · 2 comments · Opened Sep 3, 2026
pdftopdf (cfFilterPDFToPDF): pages whose /Resources dictionary has a duplicated key are dropped — regression in 2.2.x (PDFio migration) Open

Difficulty 4/5 3-5 days Newbie friendliness 63/100

OpenPrinting/libcupsfilters#230 · 9 comments · 2 reactions · Opened Sep 2, 2026
pdftopdf (cfFilterPDFToPDF) no longer generates soft copies with `*cupsManualCopies: True` — regression in libcupsfilters 2.2.x Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

OpenPrinting/libcupsfilters#226 · 1 comment · Opened Aug 31, 2026
texttopdf embeds a font without checking it covers the text, printing every glyph as .notdef Open

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

OpenPrinting/libcupsfilters#224 · 1 comment · Opened Aug 31, 2026
cfFilterGhostscript: duplex DM3 (Rotated) emits -dcupsInteger1=4294967295; Ghostscript appleraster rangecheck Open

Difficulty 1/5 1-3 hours Newbie friendliness 85/100

OpenPrinting/libcupsfilters#222 · 2 comments · 1 reaction · Opened Aug 30, 2026
libcupsfilters 2.2.1-2 breaks custom continuous media on Brother QL-820NWB Open

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

OpenPrinting/libcupsfilters#217 · 5 comments · Opened Aug 29, 2026
Support Post Quantum ML-KEM and for TLS/certificates Open

enhancement priority-high security

Difficulty 5/5 Over a week Newbie friendliness 35/100

OpenPrinting/libcups#163 · Opened Aug 27, 2026
Support Post-Quantum ML-DSA signing algorithm for JWS Open

enhancement priority-high security

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

OpenPrinting/libcups#162 · Opened Aug 27, 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
Intentionally cancelling job at printer causes repeated reprint attempts from client Open

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

OpenPrinting/cups-browsed#75 · Opened Aug 26, 2026
Nothing happens Open

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

OpenPrinting/cups#1678 · 1 comment · Opened Aug 22, 2026
SSLOptions silently ignored where GnuTLS has no [priorities] SYSTEM entry (2.4.12+) Open

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

OpenPrinting/cups#1677 · 2 comments · Opened Aug 22, 2026
Destination is /dev/null [ubuntu] Open

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

OpenPrinting/cups-browsed#71 · Opened Aug 18, 2026
(cups-browsed) Destination is /dev/null [ubuntu] Open

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

OpenPrinting/cups-browsed#74 · 3 comments · Opened Aug 14, 2026
Add GitHub workflow, cron-based to update driverless (AirPrint, IPP Everywhere) printer list Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

OpenPrinting/openprinting.github.io#229 · 3 comments · Opened Aug 12, 2026
Why do we need to detach all the interfaces? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OpenPrinting/ipp-usb#136 · Opened Aug 11, 2026
The legacy-print-app servers opens several instances of /dev/null which are never closed. Open

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

OpenPrinting/pappl-retrofit#53 · 2 comments · Opened Aug 10, 2026
foo2ddst emits a redundant "PAGE: n copies" marker, causing CUPS to double-count printed pages Open

Difficulty 1/5 Under an hour Newbie friendliness 82/100

OpenPrinting/foo2zjs#29 · Opened Aug 8, 2026
Foomatic-generated PPD for foo2ddst printers lacks proper *1284DeviceID, causing Windows IPP Class Driver to misclassify printer as "Unspecified" device Open

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

OpenPrinting/foo2zjs#28 · 2 comments · Opened Aug 8, 2026
foo2ddst: missing "@PJL SET HOLD=OFF" causes Ricoh SP112 to accept job but never feed paper (hangs indefinitely) Open

Difficulty 2/5 1-3 hours Newbie friendliness 85/100

OpenPrinting/foo2zjs#27 · Opened Aug 8, 2026
rastertops: a truncated row leaks residual heap data into PostScript Open

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

OpenPrinting/libppd#86 · Opened Aug 2, 2026
libppd: a 21-item PPD attribute writes past items[20] Open

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

OpenPrinting/libppd#85 · Opened Aug 2, 2026
libppd: Custom real parameters overflow ppdEmitString Open

Difficulty 4/5 3-5 days Newbie friendliness 66/100

OpenPrinting/libppd#84 · Opened Aug 2, 2026
libppd: Custom PageSize type confusion reaches an invalid free Open

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

OpenPrinting/libppd#83 · Opened Aug 2, 2026
texttotext: page-size integer overflow causes a heap-buffer-overflow Open

Difficulty 4/5 3-5 days Newbie friendliness 62/100

OpenPrinting/libcupsfilters#198 · 3 comments · Opened Aug 2, 2026
texttopdf: prettyprint without wrapping corrupts the page heap Open

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

OpenPrinting/libcupsfilters#197 · Opened Aug 2, 2026
texttopdf: comment token across a page boundary writes before the page buffer Open

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

OpenPrinting/libcupsfilters#196 · Opened Aug 2, 2026
texttopdf: column-layout integer overflow causes heap out-of-bounds access Open

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

OpenPrinting/libcupsfilters#195 · Opened Aug 2, 2026
pwgtopdf: a truncated raster row is copied from uninitialized heap memory Open

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

OpenPrinting/libcupsfilters#191 · Opened Aug 2, 2026
pdftopdf: more than 10,000 output pages corrupt fixed scheduler state Open

Difficulty 4/5 3-5 days Newbie friendliness 65/100

OpenPrinting/libcupsfilters#189 · Opened Aug 2, 2026

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