Lossy GIF compressor
This is an encoder (based on gifsicle) which implements lossy LZW compression. It can reduce animgif file sizes by 30%—50% at a cost of some dithering/noise. Downloads and source code on GitHub Usage ./gifsicle -O3 --lossy=80 -o lossy-compressed.gif input.gifAdjust --lossy argument to quality you want (30 is very light compression, 200 is heavy). It works best when only little loss is introduced,
Compressor.io - optimize and compress JPEG photos and PNG images
Fast & efficient imagecompressionOptimize JPEG, PNG, SVG, GIF and WEBP
optipng home page
optiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections. If you wish to learn how PNG optimization works, or to know about other similar tools, see the PNG Tech article A guide to PNG optimization. DOWNLOAD opti
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