image optimizer for web

tools
benchmarks
bugs
donate

report list of issues

new
open (1)
done (264)

[feature request] please add a flag to force output even if larger: 30/01/2026 - tsftd

working with files starting with a '-': 15/10/2025 - working with files starting with a '-'
No savings if Japanese characters are in the folder/file name.: 04/10/2025 - BrianCrowe
Memory leaks when processing large folders: 26/09/2025 - John Smith
Does not work with files beginning with a hyphen: 26/09/2025 - John Smith
Won't optimize if folder path contains pseudo-illegal characters: 16/09/2025 - phnthnhnm
pingo 1.25 refuses to optimize files with Unicode filenames: 15/09/2025 - Lord_D
Donation: 04/09/2025 - Floutsch
[Feature Request] Pinga progress in taskbar: 03/09/2025 - Anon
Support JPEG XL: 21/08/2025 - grouik1er
Update PNG benchmark with Oxipng 9.1.5: 23/07/2025 - Andy
pingo crash with png: 19/07/2025 - pingo crash with png
Possibility of Pingo or Pinga for Mac: 13/07/2025 - Cinthia TC
Metadata not updated: 12/03/2025 - Ekwinox
Mentioned Pinga in My Article – Let’s Connect!: 10/03/2025 - Huzaifa
too agressive posterization: 27/02/2025 - Hrm
Hello, may I ask if Pingo software can run on the Linux platform?: 21/02/2025 - baidu001@aliyun.com
Show full version number (major.minor.patch) in GUI: 20/07/2024 - Olav
License / EULA: 27/06/2024 - Omar
v0.64 make no compression: 11/06/2024 - St
Color Lost: 08/06/2024 - Germanie
lodepng/lodepng.cpp: 03/06/2024 - grouik
Auto trim White Space: 31/05/2024 - JoKalliauer
[Feature Request] Option to enable/disable JPEG Progressive Encoding: 21/05/2024 - Jay
Pinga doesn't compress jpgs downloaded from smartphone.: 07/05/2024 - Michał Rełkowski
Pingo crash on resize: 01/05/2024 - Phil Marty
0xc0000005 with ASLR enabled (rare application incompatibility): 27/04/2024 - (Thankful FR user)
Tojan find - Windows Defender: 21/04/2024 - Michal
-notime not respected when converting format: 19/04/2024 - Viscerous
BMP (bitmap picture) files support: 18/04/2024 - megalol
colours messed up when enabling limit sizing: 18/04/2024 - Abs C
missing TIFF-support: 16/04/2024 - JoKalliauer
Compression of folders does not complete the process.: 09/04/2024 - RRX
I can't drag and drop files/folder from my filemanager: 09/04/2024 - bahns
support for libjxl encoder?: 09/04/2024 - bahns
Pinga 0.63.4 - Installation over previous version delete old settings: 30/03/2024 - James Pous
free space: 25/03/2024 - Artur
Divide by 0 on a small: 20/03/2024 - Kurosu
It doesn't work with webp at all: 16/03/2024 - Destroy666
hidden file not processed: 10/03/2024 - grouik
Pingo virus detected unable to download: 08/03/2024 - Thierry Arbelot
Pinga WebP support and destination folder option: 29/01/2024 - CM Smidt
Pingo Grayscale fails to convert all files since 1.16: 28/01/2024 - Corwin
Pinga 0.62 does not compress PNG as strong as 0.42: 09/01/2024 - Grelle
Improve grayscale conversion: 05/01/2024 - Aleksandr
Source code / open source: 27/12/2023 - anon
Spines - Strange Render After Compression: 11/12/2023 - Kane
Pinga resize proposal: 28/11/2023 - ASDF
Pinga still freezes at big amouth of .png's: 22/11/2023 - DD
pingo: convert JPEG to WEBP LOSSLESS: 09/11/2023 - Aleksandr
drap and drop not working on Win11: 10/10/2023 - Bruno George
Pingo does not act on files within folders with special characters.: 09/10/2023 - Jay
Pinga crashes when try to start: 30/09/2023 - dooc
More compression with Image Catalyst: 21/09/2023 - Alexei
wrong version for download?: 06/09/2023 - Andrew
Is there Linux version?: 24/08/2023 - Victor Pashynsky
JPEG compression level resets on startup: 24/08/2023 - Brian Crowe
Pinga feature: 22/08/2023 - qD
Please add -notime setting to pinga: 18/07/2023 - Anonymous
new pingo can't lossy compress as much as old pingo (with -pngpalette): 12/07/2023 - Thibaud
"incorrect command-line or processing": 07/07/2023 - Snowknight26
Feature request: option to set output directory: 03/07/2023 - Philip
Cannot disable JPG subsampling as of v1.00?: 01/07/2023 - Dinesh
-noalpha flag is not taken into account: 23/06/2023 - Vincent Rabaud
Website - missing downloads: 21/06/2023 - James Pous
Donation from Russia: 20/06/2023 - Anton
v1.00: can no longer do lossless JPG rotation: 19/06/2023 - Mikko Valorinta
Pinga 0.50 - will not remove all EXIF data: 17/06/2023 - James Pous
-nostrip does not respect EXIF tags: 16/06/2023 - Aaron Reitz
using -resize on input smaller than resize param = no processing: 09/06/2023 - Thibaud
-grayscale fails on CMYK JPEGs: 28/05/2023 - Dinesh
pingo a70 performs worse than ECT on specific image: 12/05/2023 - dwc
Some png types don't support being converted to jpg: 28/04/2023 - xz
feature request: set quality separately for png and jpg using -auto=: 21/03/2023 - megalol
Provide option to disable AVG and PAETH filters for PNGs: 13/03/2023 - Dinesh
Standalone version for lossless optimization: 24/02/2023 - test
24-bit grayscale JPEGs not converted: 23/02/2023 - Dinesh
pingo's lossless is converting RGB16 to RGB8 which creates...: 19/02/2023 - Tadeusz
pinga - Write full version info to registry: 07/02/2023 - Olav
Show full version in pinga -> Settings: 07/02/2023 - Olav
Pinga failing to optimise PNG on extreme or high compression: 27/01/2023 - Wayne
Please provide attribution for 3rd party libraries: 19/01/2023 - fhanau
jpeg compression bug: 18/01/2023 - iki
pinga 0.42d be detected Malicious by SecureAge: 16/01/2023 - xz
pinga 0.42d not work with last pingo 0.65: 04/12/2022 - pulp25
AVIF File (WAVIF 0.10) not compatible with Android 12: 17/11/2022 - James Pous
wavif 0.08 doesn't detect files: 17/11/2022 - dwc
Donations: 26/09/2022 - LuisB
Pingo (a34) Does Lossy Optimizations to PNG File in Lossless Mode: 21/09/2022 - Alex
worse compression in every single version after a21: 11/09/2022 - subash
wrong setting option in pinga 0.42c: 19/07/2022 - wlz
Improvement: allow to keep the original modification date of the file: 10/07/2022 - Larry
Pinga 0.42 - optimize jpegs have colour errors in Photoshop Elem. 2022: 05/07/2022 - James Pous
apng compression has no effect on v1 with some files but with v0.99 ok: 24/06/2022 - megalol
arbitrary resize values: 14/06/2022 - thibaud
Do not work on folder path with Japanese: 14/06/2022 - Kay
Option to save color for transparent pixels: 30/05/2022 - Tim
Corrupts PNGs: 24/05/2022 - Anon
Pingo (a17) Crashes When Attempting to Optimize PNG File: 22/05/2022 - Alex
png compression improvements: 15/05/2022 - doc
Filenames with dashes (-) at the beginning crash pingo: 25/04/2022 - Dashing
Put a history of versions.: 21/04/2022 - Put a history of versions.
bad command for '-jpgsub' option: 05/04/2022 - Kyle Yue
Can I specify the number of threads to use?: 02/04/2022 - ect
Malformed lossless output on transparent gradient: 26/03/2022 - Viscerous
pinga window starts to large to use when using custom DPI: 14/03/2022 - Marcus Widerberg
-webp-loss command does not create webp image: 14/03/2022 - squoosh
Pingo (a14) JPEG File Rotation Isn't Always Lossless: 06/03/2022 - Alex
Doesn't attempt to compress large JPG (14035x19726, 196MB): 21/02/2022 - eggplant
Two big bugs: 18/02/2022 - Donator110421
Resize: 15/02/2022 - Anon
Pingo (a9) Issues With CMYK JPEG File: 10/02/2022 - Alex
Doesn't work on large PNG Files: 09/02/2022 - GWD
Freeze on particular PNG: 06/02/2022 - Pingogeek
What is the license on this software: 03/02/2022 - Bits
Grayscale conversion problems: 28/01/2022 - Coriy
Antivirus issue: 20/01/2022 - Val
pingo for alpha 1.0: 18/01/2022 - doc
alternate to alpha: 28/12/2021 - rv
a2 download link leads to 404: 22/12/2021 - dwc
make option -ouput file: 21/12/2021 - henson
Unsupported characters in filenames: 12/12/2021 - Greg
License: 23/11/2021 - Etienne
Weird error when folder name starts with -: 16/11/2021 - Nicholas
Scale: 16/11/2021 - Enes Sahin
Support MacOs version: 12/11/2021 - Yuriy Levchenko
Separate path and filename to make filenames easier to read: 03/11/2021 - Harrison
No WebP Generated: 03/11/2021 - Kane
no linux-installer: 31/10/2021 - JoKalliauer
-jpgconvert producing color JPEG for grayscale PNG inputs: 20/10/2021 - dan
Pinga - minimize program window: 03/10/2021 - James Pous
Chinese symbols in the folder stops pingo from working: 03/10/2021 - folder with chinese symbols problem
Can produce larger output, still overwrites input: 28/09/2021 - Ken
lossless settings produce lossy output for some inputs: 27/09/2021 - Ken
Inconsistent lossless result when input is folder: 26/09/2021 - Tam Vo
RLE: 21/09/2021 - Matz JB
How to compress without replacing: 19/09/2021 - Brunoais
-nodate command: 19/09/2021 - Curtis Underwood
Percentage of compression: 30/08/2021 - Doc
suggestion to add forcing RGB color space: 29/08/2021 - h3oCharles
Question about lossy webp: 08/08/2021 - sutu
Pingo installation reset settings: 30/07/2021 - James Pous
Pingo Crashes When Losslessly Optimizing WebP Files (v0.99.2): 20/07/2021 - Alex
pingo - experimental level 'c' not available: 16/07/2021 - Snowknight26
pinga v0.37.1 download 404's: 15/07/2021 - dwc
Exif information is always removed: 14/07/2021 - Thomas
Move pinga default installation directory elsewhere? read desc: 14/07/2021 - Yiss
How will we know if a new version has been released?: 10/07/2021 - dwc
Pinga 0.37 - F2 key - error message: 10/07/2021 - James Pous
Version 0.99 rc4 (16) ignores 'keep RGB values' and -noalpha: 22/04/2021 - Gura
Set process priority please: 11/04/2021 - Donator110421
Pinga GUI latest version 0.99 RC 4 (16) - correct saved space calculation?: 09/04/2021 - James Pous
Strip jpg problem: 07/04/2021 - mano
-srgb conversion problem with -s9: 16/03/2021 - Javi
JPEG XL in the future?: 23/01/2021 - Olav
Difference between -grayscale and -grayscale -s0: 19/01/2021 - Donald P.
Add option to optimize for decompression speed: 04/01/2021 - dwc
Better compression level: 02/01/2021 - mano
-noalpha doesn't always work: 02/01/2021 - mano
wavif apricot.avif example looks awful when opened in new tab: 19/12/2020 - dwc
-pngpalette only works on 24bpp images: 19/12/2020 - dwc
Webp becomes way too colorfull?: 20/10/2020 - asdf
Compression level vs quality level: 14/09/2020 - Sam
Can't compress files staring with -: 10/09/2020 - megapro17
Pingo on linux abandoned?: 10/09/2020 - Brunoais
AVIF support: 06/09/2020 - Bbg
-pngpalette with values 70-74 produces the wrong amount of colors: 5/09/2020 - dwc
Pingo removing PNG-pHYs section: 01/09/2020 - Devedse
buffer input: 31/08/2020 - Costa
reproduce results of Pingo with cwebp: 31/08/2020 - jaff
This specific image causes Pingo to crash: 19/08/2020 - Andrew
Options for scripting: 08/05/2020 - Ignacio Carrera
pngfilter makes images darker: 27/04/2020 - anon
auto parameter: 20/04/2020 - Pavel
cannot convert jpg to webp [rc2 15]: 18/04/2020 - sk
Pinga (latest version) - multiple optimization and every time the some saved space!: 17/04/2020 - James Pous
Pinga GUI 0.99 latest version - Do not optimize huge amount of jpeg files: 04/04/2020 - James Pous
Segmentation fault on Linux: 26/03/2020 - Jeff
default parameters in pinga: 21/03/2020 - Zcehtro
Certain text characters are not processed: 21/03/2020 - Zcehtro
png lossy compress issue & compressed size: 13/03/2020 - Adam
Problem with jpgquality param?: 12/03/2020 - Tz
error: bad command when invoking -nodate: 22/02/2020 - Rob
version 0.99 rc1 png lossy quality: 18/02/2020 - Adam
Different behavior on Linux and Windows: 13/02/2020 - Grzegorz Konefał
PNG-48 procceesed to PNG-24: 11/02/2020 - Fred
Feature request: rotate, crop and scale: 27/01/2020 - Grzegorz Kulewski
Cannot download zip using wget or curl: 20/01/2020 - Lucas Rolff
Input profile is operating on wrong colorspace: 14/01/2020 - Rei
License: 03/01/2020 - Luc
Problem when a JPEG and a PNG have the same file name: 30/12/2019 - Javi
Need a way to limit: 23/12/2019 - doppler56
pinga ignores UNchecked strip: jpg and removes whole exif: 14/12/2019 - Alex
INI file in GUI is not being used: 16/12/2019 - Frederick
Filtering with -pngfilter: 11/12/2019 - Letranger
Auto mode and PNG JPG convertion: 05/12/2019 - Grzegorz Kulewski
Why exit on any error when batch processing?: 11/11/2019 - Paul
Pinga lossless compression worse than PNGSlim: 10/11/2019 - Michael
ESC always active listen: 08/11/2019 - doppler56
Multiple operational comments: 06/11/2019 - doppler56
How to set the output file?: 01/11/2019 - Brunoais
linux absolute paths yields bad command: 01/11/2019 - Brunoais
Found a PNG that is not reduced while pngout does the job just fine: 01/11/2019 - Brunoais
png lossy and lossless compress question & RGBA32 conversion to RGB24 question: 30/10/2019 - Adam
-grayscale does not set colorspace to gray: 23/10/2019 - Habere
A flag to delete original/larger file after auto-conversion: 26/09/2019 - Red
-webp changes the dimensions of the pic: 24/09/2019 - Totor
Color palette: 22/09/2019 - JVR
-webp not working with .jpeg: 19/09/2019 - Totor
pingo finding the true format of a pic: 18/09/2019 - Totos
Where Alpha=0 RGB is cluttered with data: 17/09/2019 - Matz
GUI Installer always install in Program Files: 02/09/2019 - Stoyan
[Bug] Unhandled full path: 01/09/2019 - Habere
gui not support jpeg: 30/08/2019 - gui not support jpeg
pinga 0.19 and Windows 10: 30/08/2019 - JamesPous
This particular PNG gets skipped when converting to WebP: 27/08/2019 - Lubos
Can't run: 09/08/2019 - Damien
JPG crashed Pingo: 08/08/2019 - Rooter
Please add flags to keep EXIF and IPTC data: 08/08/2019 - Rooter
Permission to advertise pingo and create tutorials in other languages: 24/07/2019 - Cinthia
Alpha channel of a RGBA png has been wrongly removed: 23/07/2019 - Taigacon
Mac Support: 23/07/2019 - Kane
-noext does not work: 21/07/2019 - anonymous
Version information?: 11/07/2019 - DrD
pingo does not convert files if a file with the same basename exists: 21/05/2019 - Snowknight26
FLIF support: 10/05/2019 - Habere
Save in the Same Folder: 04/04/2019 - Marco
Unexpected behaviour: 31/03/2019 - User
Crash when handling certain file: 21/03/2019 - Steven
Suggestions to palette reduction: 19/03/2019 - DrD
mozjpeg get more compress than pingo -s9: 24/02/2019 - Lucas Valieri
Feature requests (though they/05/be outside of the parameters of Web Optimizer): 10/02/2019 - timegrinder
APNG is immediately deleted: 28/01/2019 - Dinesh
Optimizing subsampled JPEGs produces standard-nonconforming results: 28/01/2019 - Dinesh
Pinga 0.15 with latest Pingo 0.98.52 does not optimize: 27/01/2019 - James Pous
pingo vs pinga compression level: 09/01/2019 - X.K.
benchmarks refresh?: 14/12/2018 - benchmarks
Pingo window title: 27/10/2018 - Lord_D
Processing subfolders: 26/10/2018 - Palamber
Please add -nodate checkbox in pinga: 15/10/2018 - Zerofool
Pinga v14 Not multithreaded: 15/10/2018 - Hakker
zero-alpha pixels sometimes not preserved with -lossless/-noalpha: 13/10/2018 - boring
0.98.26 broken on this image again: 5/10/2018 - Intrinsic
License type: 13/09/2018 - Costa
Pinga fails with NTFS long path: 29/08/2018 - Olav R. B.
Pinga 0.08 - admin rights: 22/08/2018 - James Pous
Pingo memory leak/high ram usage when processing large number of files: 15/07/2018 - sims
Unicode filenames and folder names not working properly: 01/06/2018 - Veggie
Strip and lossless: 29/05/2018 - Javi
Brotli for PNG: 12/05/2018 - Morgz
Parameters order: 12/05/2018 - Nilsson
pingo 64-bit 0.96zx -s9 breaks alpha: 10/05/2018 - Aaron
Pingo crash (PNG): 07/05/2018 - Javi
Input size cap issue: 11/04/2018 - Mathieu
Pinga can't handle many files: 9/04/2018 - Olav R. Birkeland
Pingo crash (JPG): 06/04/2018 - Javi
Special kind of JPEG optimization: 01/04/2018 - Manuel
Second pass: 27/03/2018 - Javi
errors with uncommon png-file: 17/01/2018 - nastyslave
JPEG related crashes: 11/01/2018 - Lord_D
Will pingo be open source?: 08/01/2018 - ye4241
Corrupted images: 01/01/2018 - Aaron
More Compression?: 12/12/2017 - Pierre
Converting to PNG is smaller than JPEG sometime: 13/11/2017 - g.hyde
Pingo as dll for program including?: 22/09/2017 - Wingcrony