PNG Compression tools
A useful way of saving space and making images download quicker.
- 15 Must-Have Free Image Optimization Tools for Designers http://goo.gl/O59p0
PNG Gauntlet Many PNG files output by popular graphics software packages like Photoshop or Fireworks are not as small as they could be – PNGGauntlet squeezes the last bit of size out of them
SuperPng – free PhotoShop plugin, saves faster and smaller than Adobe’s built-in PNG export.
PNG Compression tests
2000×1500 Rendered image of digital multimeter against transparent background (shows as black in example s converted to jpg)
Original size for all tests = 361,125kb
Adobe Photoshop native export – final size = 357kb
nb this image converted to jpg
PunyPng
| Filename | Original Size | Puny Size | Saved | ||
|---|---|---|---|---|---|
| Repair – multimeter.png | 361,125 bytes | 325,728 bytes | 35,397 bytes | 10% |
PNGGauntlet
Compression strategy Xtreme (slowest) Original Size 352.66kb New Size 323.73kb (%92 Original)
Compression strategy Longest Match (Fast) New Size 373.51kb (106% original)
SuperPNG 355kb final size
Shrink’o'matic 324kb
Irfanview offers even smaller sizes but seems to lose transparency settings.
Irfanview compression level 9 – best. Final size = 298kb
Irfanview compression level 6 - Final size = 301kb
OneArmedGraphics [
