pingo optimizer
pingo, a fast image optimizer
pingo is an experimental, fast Web PNG/JPG optimizer which offer lossless, web lossless or lossy compression. it performs image reductions over iterations thanks to recursive multi-processing and multithreading systems
manual v0.98
important
always do backup before using pingo. try on test files/folders especially made for this. understand that this tool is processing all files in subfolders. it could convert/reduce the visual quality of your files and overwrite them without any backup or warning
see some examples for pingo usage
options
| options |
range |
type |
effect |
| -auto | -auto=N |
— |
auto |
[1-100] optimize the image for Web (default) |
-s0 to -s9 |
0 — 9 |
web lossless |
web lossless optimization | compression level |
| PNG |
| -pngquality=N |
1 — 100 |
lossy |
auto-select lossy type |
| -pngfilter=N |
1 — 100 |
lossy (type) |
use lossy filter to transform data |
| -pngpalette=N |
1 — 100 |
lossy (type) |
quantize to paletted (256 colors max) |
| -pngcolor=N |
1 — 100 |
lossy (type) |
reduce the number of colors |
| -pngconvert=N |
0 — 12 |
lossless-lossy |
convert JPG to PNG using a filter |
| -pngstrip=N |
0 — 3 |
lossy |
remove non-critical PNG chunks (see details) |
| JPG |
| -jpgquality=N |
1 — 100 |
lossy |
set JPG quality |
| -jpgsample=N |
0 — 2 |
lossy |
set JPG subsampling |
| -jpgtable=N |
0 — 5 |
lossy |
set JPG quantization table |
| -jpgfilter=N |
0 — 10 |
lossy |
enhance details and adapt quality |
| -jpgconvert |
— |
lossy |
convert PNG to JPG <=> -rgb |
| -jpgscale |
— |
lossy |
auto-scaling for high definition JPG |
| -jpgstrip=N |
0 — 3 |
lossy |
remove non-critical JPG segments (see details) |
| APNG |
| -apng=N |
0 — 4 |
lossless-lossy |
define APNG optimization type (see details) |
| -apngquality=N |
1 — 100 |
lossy |
set APNG quality |
| PNG/JPG |
-fast |
— |
lossy |
just remove chunks or segments <=> -strip=N |
-strip=N |
0 — 3 |
lossy |
remove PNG/JPG chunks/segments (see details) |
| -srgb=N |
0 — 3 |
lossy |
control the conversion to sRGB (see details) |
miscellaneous
| transformations |
effect |
| -srgb |
force conversion to sRGB for PNG and JPG (always overwrite) |
| -grayscale |
convert image data to grayscale |
| -notrans |
convert RGB data to remove transparency <=> -rgb |
| -rgb: N N N |
set background color in red, green and blue (0-255) <=> -notrans or -jpgconvert |
| shortcuts |
effect |
| -lossless |
enable strict lossless optimization |
| -compress, -c |
just do recompression |
| -nocompression, -nc |
keep the data uncompressed for output |
| -soft |
lossy but high quality presets (PNG and JPG) |
| -text |
convert an input JPG text image to PNG |
| trials |
effect |
| -uncompress, -u |
just do uncompression |
| -reset |
force filter none, convert RGB data if alpha is 0, uncompress |
| controls |
effect |
| -nomulti, -low |
disable multiblocks/multiprocessing |
| -multiprocess=N |
enable or disable the multiprocessing (default enabled) |
| -multiblocks=N |
set the number of threads (default: 4) |
| -verbose=N |
set the verbose level (0=quiet, 1=result, 2=result and %, 3=result, % and size) |
| -q, -quiet |
set verbose to 0 |
no[value]
| no[value] |
effect |
| -nopng |
disable PNG processing |
| -nojpg |
disable JPG processing |
| -noapng |
disable APNG processing |
| -nostrip |
do not remove PNG/JPG chunks/markers |
| -nopngstrip |
do not remove PNG chunks |
| -nojpgstrip |
do not remove JPG markers |
| -nosrgb |
avoid sRGB conversion for PNG and JPG |
| -nopngsrgb |
avoid sRGB conversion for PNG |
| -nojpgsrgb |
avoid sRGB conversion for JPG |
| -nojpgcheck |
do not check JPG quality |
| -nodate |
restore modification date |
| -noalpha |
do not change RGB if alpha is 0 |
| -notrials |
just do recompression |
| -nodithering |
disable diffusion (palette/filter) |
| -norotation |
ignore JPG orientation tag |
| -noconversion |
do not convert PNG to JPG in auto |
| -nocheck |
disable checking in auto |
| -noext |
do not check/change extension according to file header |