Ask HN: Which tools are you using to edit graphics for web?
For example (me in Windows environment):
1. MS Visio to draw diagrams
2. MS Paint to cut screenshots (from Google Image Search, from Visio print preview etc), make some pixel-level editing in 800% zoom mode and perform 2:1 or 4:1 downsampling
3. Color Detector by Cosmin Smeu to detect color codes on the screen
4. BenVista PhotoZoom to enlarge raster images
5. PhotoShop CS4 to add PNG transparency, rotate colorspace, adjust saturation/contrast, resample raster images
6. OptiPNG (console utility) by Cosmin Truta to compress/optimize PNG files.