Alternatives to TruePNG for all platforms with any license

ImageOptim

ImageOptim makes images load faster. Removes bloated metadata. Saves disk space & bandwidth by compressing images without losing quality.

Free Open Source Mac
Remove EXIF Data Lossless Compression Support for Multiple threads PNG Compression Add a feature

68 Like
PNGGauntlet

-Combines PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs -No image quality is lost — only file size -Converts JPG, GIF, TIFF, and BMP files to PNG ...

Free Windows
Lossless Compression File Compression Works Offline PNG Compression Add a feature

28 Like
TinyPNG

TinyPNG uses smart lossy compression techniques to reduce the file size of your PNG files. By selectively decreasing the number of colours in the image, fewer bytes are...

Free Web
PNG Compression Add a feature

15 Like
pngquant

pngquant is a command-line utility and a library for lossy compression of PNG images. The conversion reduces file sizes significantly (often as much as 70%) and...

Free Open Source Mac Windows Linux
No features added Add a feature

7 Like
OptiPNG

OptiPNG is a command-line PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats...

Free Open Source Mac Windows Linux
PNG Compression Add a feature

19 Like
pngcrush

Pngcrush is an optimizer for PNG (Portable Network Graphics) files. It can be run from a commandline in an MSDOS window, or from a UNIX or LINUX commandline.

Free Open Source Windows Linux
PNG Compression Add a feature

8 Like
PngOptimizer

PngOptimizer compresses graphics files and removes extra, unnecessary data without affecting quality. It will update PNG files or converting BMP, GIF or TGA files to the...

Free Open Source Windows Linux PortableApps.com
Portable Add a feature

16 Like
Optimus.io

optimus.io offers lossless compression of images available with a WordPress plugin and via API. Benefits: - The file size will be reduced but the image quality...

Freemium Web Wordpress
No features added Add a feature

12 Like
Crunch

Crunch - Insane(ly slow but wicked good) PNG image optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression...

Free Open Source Mac Linux
No features added Add a feature

1 Like
AdvanceCOMP

A collection of recompression utilities for your ZIP archives, PNG snapshots, MNG video clips and GZ files.

Free Open Source Mac Windows Linux
No features added Add a feature

1 Like
PNGOUTWin

You can use PNGOUTWin, an easy-to-use PNG optimizer, to create smaller image files and speed up your website, reach more potential customers, and decrease your bandwidth...

Commercial Windows
No features added Add a feature

4 Like
Black Bird Image Optimizer

Optimize pictures without quality lossless. With Black Bird Image Optimize - you can reduce the size of your photos several times without quality loss!.

Freemium $ $ $ Windows
Portable Add a feature

1 Like
Optimage

Optimage is an advanced image optimization tool to compress images without losing quality at highest compression density. It supports all popular image formats including...

Freemium $ $ $ Mac
Lossless Compression PNG Compression Support for Batch Mode Command line interface ... Drag n drop Remove EXIF Data Portable Reduce size Add a feature

1 Like
Tinybeest

A Mac app and Chrome extension that optimizes/compresses images and PDFs. Tinybeest also converts file formats and resizes images for the web.

Freemium Mac Web
Built-in Image converter Add a feature

1 Like
IMAGEmini

IMAGEmini, a powerful photo resizer and optimizer, allows you to optimize all your photos by 80% ~ 20% comparing to their originals while keeping their original...

Commercial Mac
Batch processing Lossless Compression Add a feature

2 Like