jp2a(1) USER COMMANDS jp2a(1)
>>> (NAME)
jp2a - >>>>> >>>>>> JPEG> PNG > WebP >>
>>>> (ASCII)
>>>>> >>>>> (SYNOPSIS)
jp2a [ options ] [ filename(s) | URL(s) ]
>>>>>>> (DESCRIPTION)
>>>>> jp2a >>>>>> JPEG> PNG > WebP >>
>> >>>>>>>>> ASCII >>>>>
>>>>>>. >>>>>>>>> >>>>>>
>> >>>>>>> > URL>> >> >>>>
>>>>.
>>>>>>>> (OPTIONS)
- >>>>>> >>>>> JPEG> PNG > WebP >>
>>>>> >>>>>>>>>
--background=light --background=dark
>>> >>>>>>>>>> >>>> >>
--invert >> > >>> >>>>> >>>>>>
>>>> >>> >> >>> >> >> >>>
>>>>>>>> >>>>>>> >>>>.
>>> >> >>>>>>>>> >>>>
>>> >>>>>>> >>>>
>>>>>>> >>>>>>>> >>
--background=dark >>>>>>> >>>>> >
>>>>>.
-b --border
>>>>>>>> >>>>> >>>>> >>
>> >>>> (>>>>>)
--chars=...
>>>>>>> >> >>>>>>>>>
>>>>>>>> >>>>> >>>>>
>>>>> >>>>> ASCII. >>>>>>> "
...',;:clodxkO0KXNWM" >>>.
--colors
>>>>>>> >> >>> >>>>>
(truecolor) (>> >> >>>> >>>
>>>>>>>> >> truecolor> >>> ANSI)
>>>> >>>>> >>>>> > >>> CSS
>>>> >>>>> HTML.
--color-depth=...
>>>>>>> >> >> >>> >>> (color-
depth) >>>> >>>> >>>>>
>>>>>>>. >>>>>> >>>>>
>>>>>>> >>: 4 (>>>> ANSI)> 8
(>>>> >>>> >>> >>>) > 24
(>>>> truecolor >> >>> >> >>>>).
-d --debug
>>> >>>>>>>
>>>>>>>>>>> >>>>>
>>>>>>> >> libcurl >>>>
>>>>>>> >>>>>> >>
>>>>>>>.
-f --term-fit
>>>>>>> >> >>>>>>>>>
>>>>>> >> >>>>> >> >>
>>>> >>>>> >>>>>>> >>>
>> >>>.
--term-height
>>>>>>> >> >>>>>> >>>>
>>>>> >>>>>>> > >>>>>>
>>> >> >>>> >>>> >>>>>
(aspect ratio).
--term-width
>>>>>>> >> >>> >>>>
>>>>> >>>>>>> > >>>>>>
>>>>>> >> >>>> >>>>
>>>>>.
-z --term-zoom
>>>>>>> >>>>>> >> >>> >
>>>>>> >>>> >>>>>
>>>>>>>.
-c --term-center
>>>> >>>> >>>>> >> >>>>
>>>>>>>.
--fill >>>>>> >> >>>>> >> --html >
--color >>>>>>> >>>> >>>
>>>>>>>> >> >>>>> >>>>>
>> >>>>>>>>> >>>>>>.
>>>> >>>>>> >>>
>>>>>>>>> >> >>>>>
>>>>> >>> >> >>>>>>>>
>>>> >>>>>>> >>>>> >>>
>>>>> >> >>>> >>>>>>:
jp2a --color --html --html-fill --background=light somefile.jpg
--output=dark.html
>>>> >>>>> >>>> >>> >>>
>> >>>>>>>> >>>>:
jp2a --color --html --html-fill --background=dark somefile.jpg
--output=light.html
>>>> >>>>>>> >>>>>>>
>>>> fill >>>.
-x --flipx
>>>>>>>>>>> >>>> >>>>>
>>>>>
-y --flipy
>>>>>>>>>>> >>>>>
>>>>> >>>>>
--height=N
>>>>> >>>>>> >>>>>. >>>
>>> --height >>>> >>> >>>>>
>>> >>>>> >> >>>> >>>>
>>>>> >>>>> >>>> >>>>>>
>>>>> >>.
-h --help
>>>>> >> >>> >>>>>>>
>>>>>
--grayscale
>>>>> >>>>> >> >>>>>
>>>>>>> (grayscale) >>>>>
>>>>>>> >> --html >> --colors.
--html >>>>> >>>>> ASCII >>
>>>>>>>>> >>>> XHTML 1.0.
(>>>> >>>>> 2.0.0 > >>>>>>>
>> >>>> HTML >>>>> >>>>>
>>>).
--htmlls
>>>>> >>>>> ASCII >> >>>> HTML
(Living Standard)> >>>>> >>>>
>>>>>> >> >>>>>>>>> >>.
>>> >>>>> >>>> >>>>>
>>>>> >>>>> > >>>>> >>
>>>>>>>>> >>>>> >> >> >>
>>>>>> >> >>> >>>> >>>>>
>>>> >>>>>> >>>.
--xhtml
>>>>> >>>>> ASCII >>
>>>>>>>>> >>>> XHTML 1.0.
--html-fill
>>>>> --fill. >>>> >>> >> >>>
>>>> >> >> >>>>> >>>>>>>
>>>>.
--html-no-bold
>>> >>>>>>> >> >>> >>>>
(bold) >>>> >>>>> HTML.
--html-raw
>>>>> >>>> >>>>> >>>> >>
>>>> >>>>> HTML >>>> >>>>
>>>>>>> >>>> >>> >>
>>>>>>> >>>> >> >>> >>
>>>>>>. (>>>> >>>>> 2.0.0 >
>>>>>> >> >>>
>>
>>>>>>> >>>>> >>).
--html-fontsize=N
>>>>> >>>>>> >>> >>>>>
>>>>>>> >> >>>>> --html.
>>>>> >>>>>>> 4 >>>.
--html-title=...
>>>>> >>>>> >>>>> HTML.
--output=...
>>>>> >>>>> ASCII >>
>>>>>>>> >>>>>>>>. >>>>
>>>> >>>> >>>> >>>>>
>>>>>>>>>> >> --output=-
>>>>>>> >>>>.
-i --invert
>>>>> >>>> >>>>> >>>>>.
>>> >>>>>> >> >>
>>>>>>>> >>>> >>>>>>
>>>>>>>> >>> >>
>>>>>>>> >> >>>>>>>>>
>>>> >>> >>>>>>>> >>>>
>>>>>>> >>>>>>>> >>>>
>>>>> >> >>>>> >>>>.
--red=...
--green=...
--blue=...
>>>>> >>>>> >> RGB >>
>>>>> >>>>>>>> >>
>>>>>>> >>>>>>>> >>>>
>>>>>> >>>>>>> (luminance)
>>>>>>> >>>>>>. >>>>>>
>>>>>>> >>>>>>> >> red=0.2989>
green=0.5866 > blue=0.1145.
--size=WIDTHxHEIGHT
>>>>> >>>>> >>>>>.
-v --verbose
>>> >>>> >>>>>>> >>>>>>
>> >>>>> >>>> >>>>>>>>>
>>>>> >>>>>> >> >>>>> JPEG.
--width=N
>>>>> >>> >>>>>. >>>
>>>> >>> >> >>>> >>>>>
>>>>>> >>>>>> >>>>>>
>>>>>> >>>>>>.
-V --version
>>> >>>> >>>>>>.
--zoom >>>>> >>>>> >>>>> >> >>>
>>>> >>>>> >>>>>>> >>>>
>>>> >> >>> >>>>> >>>>
>>>>> >>>>> >>>>.
--edge-threshold= ...
>> >>> >>> (gradient) >>>>> >>
>>>> >>>>>> >> >>>>>> >>
>> >>>> > >>>>>> >>
>>>>>>>> >>>>>>> (>>>>>
-/|\) >>>>>>>> >>>>>>>.
>>>>> >>>>> >>>> >>>>>
>>>>> >>>>>> >> >>>>>
>>>>> >>>> >>> >>>> >>>
>> >>>> 0.5 >>>>.
--edges-only
>>>> >>> >>>>>>>
>>>>>>> >> >>>>> >>>>
>>>>> >> >>> >>> >>
>>>>> >>>>>>>> >>> >>>>.
>>> >>>>> >>>> >>>>> >>
--edge-threshold >>>>>>> >>> >>
>>>>>> >>> >>>>.
>>>>> >>>> (EXIT STATUS)
>>>>> jp2a >> >>>> >>>>>> >>
>>> >>>>> 1 > >> >>>> >>>>
>>> >>>>> 0 >>
>>>>>>>>>>>>.
>>>>>>> (EXAMPLES)
>>>>> > >>> imagefile.jpg >>
>>>>>>> >> >>>>>>>>> ASCII >>
>> >>>> > >> >>>:
jp2a --size=40x20 imagefile.jpg
>>>>>>> >> >>>>> >>
>>>>>>>> >>>>> > >>> >>:
jp2a http://www.google.com/intl/en/logos/easter_logo.jpg
>>>>> >>>> picture.jpg > picture2.jpg> >>
>>>> >> >>>>> 80x25 >>>>>> >>
>>>>>>> >> >>>>>>>>> " ...ooxx@@"
>>>> >>>>>:
jp2a --size=80x25 --chars=" ...ooxx@@" picture.jpg picture2.jpg
>>>>> >>>> image.jpg >> >>>>>>>
>> >> >>>>> >> >> >> >>>>>>
>>>>>> >>>>>> >> >>>>
>>>>> image.jpg >>>>>> >>>>>>:
cat image.jpg | jp2a --width=76 -
>>> >> jp2a >>>>> >> convert(1) >>>>>
>> ImageMagick >>>>>>> >>>>>
>>>>>>>>> >>>>>>> >>
>>>>>>> (pipes) >>>> >>>>> >
>>>>>>> ImageMagick >>>>>
>>>>>>>> > >>>>>>>>
>>>>>> >> >>> >>>>> >>>>
>>>>> >>>. >>>> >>>>>:
magick somefile.gif jpg:- | jp2a - --width=80
>>>>>>>>> convert(1) >> >>>>>
>>>> >> >>>>>> >> >>>>>>>
>>>>>>>>> >>>>> >>>>. convert
>>>>>>> >> >> >> >>>>
>>>>>> >>>>>>>>> >>>>>>>>
>> >>> >>>>> >>>>>>>>>
>>>>>>> >>> >>>>>>>> PDF >> AVI
>> >> ASCII >>>>> >>>>.
>>>>> jp2a >>>> >> >>>>
>>>>>> >> >> WebP >> >>
>>>>>>>> >>>>>>>>>>>
>>>>> >>>>>>> >>>>>>>
>>>>>>. >>>> >>>>>> >>>>>
>>>>> >>>>> >> >> WebP >>>>>
>>>> >> >> >>>>>>>>>>>
>>>>>>>>> >> >>>>>>>> libwebp
>>>>>>> >>>:
cwebp -quiet image.jpg -o - | jp2a -
>>>>> >>>> >>>>>>> jp2a >>>>
>>>>>>> >>>>>> >>>>>>>>
>>>>>>>>> >> URL >>>> >>>
>>>>>>>>> >>>>> >> >>>>>>
>> curl(1) >> wget(1) >>>>>>> >>>>>
>>>> >>>>>:
curl -s http://foo.bar/image.jpg | magick - jpg:- | jp2a -
>>>>>>>>> >>>>> --edge-threshold >>
>>>> >>>>>>>>>>> >>>>>>>
>>>>> >>>>> >>>>> >> >>>>>
--edges-only >> >>>>> >>>>>> >>
>>>> >>>>>> >>> >>>> > >>
>>> >>> >>>>> >>>.
jp2a --edge-threshold=0.5 --edges-only imagefile.jpg
>>>>>>> >>>>>> >> >>>>>>>
(DOWNLOADING IMAGES FROM THE NET)
>>> jp2a >> >> libcurl(3) >>>>>>>
>>>> >>>>>> >>>>>>>>> >>
>>>>> URL>> >>>>>> >>
>>>>>>> >>>>:
jp2a https://user:pass@foo.com/bar.jpg
>>>>>>>>>> >>>>>>>>>>>
>>>>>>> >> ftp> ftps> file> http> https >
tftp.
>>> >> >>>>> >>>>>> >> >>>>
>>>>>>> >>>> >>>>>> >>>>
>> curl(1) >> wget(1) >>>>>>> >>>> >
>>>>>>> jp2a >>>>> >> >>
>>>>> >>>>>>>>> >>>>>>.
>>>>> jp2a >>>> >>>>>>>
>>>>>> >> >>>>>>> >> libcurl >>
>>>> (pipe) > fork >>>>>>> >>>>>>
(>> >>> >>>> >> >>>
>>>>>>>> >>>>>> >> exec >>>>
>>>>>>>) > >>>>>>>> >>>>>>
>> >>>> URL>>> >>>> >>>>
>>>>>.
>>>>> >> >>>>> >>>>>>> (GRAYSCALE
CONVERSION)
>>>>>>>>> >>>>> >>>> >> >>
>>> >>>>> >>>>>>> >>>>:
jp2a somefile.jpg --red=1.0 --green=0.0 --blue=0.0
>>> >>>>> >>>>>>> >> >>
>>>> >>>>> Y = R*1.0 + G*0.0 + B*0.0
>>>>>> >>>>> >>>. >>>>>>
>>>>>>> >>>>>>> >> >>>>> Y =
R*0.2989 + G*0.5866 + B*0.1145 >>>.
>>>> >>>> >>>>> (PROJECT HOMEPAGE)
>>>>> >>>>> jp2a > >>>>> >>
>>>>>> >> https://github.com/Talinx/jp2a >>
>>>>> >>>.
>>>>>> >>>>>> (SEE ALSO)
cjpeg(1), djpeg(1), jpegtran(1), convert(1), cwebp(1)
>>>>> >>>>>> (BUGS)
>>>>> jp2a >>>>> >>>>> >>>>>>
>>>>>>>>> (interpolation) >>>>>>>
(>> >> >>>> >>>>>> WebP). >>>
>>>>> >>>>> >>>>>>>>>>
>>> >> >>>>>>> >> jp2a >>>>
>>>> >> >>>>>>> >> cwebp(1)
>>>>> >> >> WebP >>>>> >>>> >>
>>>>>>>>>>> >>>>> >> >>>
>>>>>.
>>>>> >>>> >>> >>> >> jp2a
>>>> >> >>>>>>>>> >>>> X >>
>> >>>>>> >> >> >>>> (scanline)
>>>>>> >>>>>>>. >>> >>>
>>>>> >>>>> >>>>>>>>>>
>>>>> >>>>>> > >>>>>>>> >>
>>>>>>>> >>>>> >>>>>
>>>>> >>.
>>>>>>>>> (AUTHORS)
Christian Stigen Larsen > Christoph Raitzig
>>>>> jp2a >> jpeglib >>>> >>>>>>
>>>>>>>> JPEG >>>>>>> >>>>>>.
>>>>>>>> jpeglib >>>> The Independent JPEG
Group (IJG) >>>>> >>> >>> >>
>>>>>>> >> http://www.ijg.org >>>>.
>>>>> jp2a >> libpng >>>> >>>>>>
>>>>>>>> PNG >>>>>>> >>>>>>.
>>>> >>>> libpng: http://libpng.org/pub/png/libpng.html
>>>>> jp2a >> libwebp >>>> >>>>>>
>>>>>>>> WebP >>>>>>> >>>>>>.
>>>> >>>> libwebp:
https://developers.google.com/speed/webp
>>>>>>>> > >>>>> (COPYRIGHT)
>>>>>>>>> jp2a >>> >>>> >>>>>
>>>>>> >>> >>>>> > (GNU General Public
License v2) >>>>> >>>>>>.
version 1.3.0 September 22, 2024 jp2a(1)