That is, I'd rather keep AP for all my editing, and install as an extra tool something like XNView, ACDSee, or even imagemagick (this latest one is command-line based, amazing for batch and other matters. Is much harder to find such a complete solution like this, than any TIFF/PNG to JPG optimizer. And providing much more batch editing flexibility, etc.ĪP, like PS, is an entire editing solution. There ARE utilities compressing more in export than PS. And yep, is pretty darn good, but back in the days, it was even more important, much more, the size optimization, than today. That is, I NEVER liked fully the export size in PS. Indeed, I've often used external utilities, even working at companies with adobe, for a final export. I don't see by any means this as a reason enough to discard AD/AP, at all. visual aspect : fine geometries looks bigger, few glitchs/artecfacts visibles (little more than photoshop) R equal / G equal / B equal / BK equal / W 4% / Global brightness equal (white slightly lower than original. JPEG Data block : 85 617 bytes (3.9% of Raw size, -29% lower than photoshop. resolution : 72ppp (not requested in export. visual aspect : slight blur on fine geometries, few glitchs/artefacts visibles R equal / G equal / B equal / BK equal / W 6% / Global brightness equal (white slightly higher than original. JPEG Data block : 121408 bytes (5.5% of Raw size. R equal / G equal / B equal / BK equal / W 4% / Global brightness equal (white slightly lower than original. JPEG Data block : 230 724 bytes (10.5% of Raw size, +15% bigger than photoshop. JPEG Header block : 158 bytes (lower than original. resolution : 72ppp(not requested in export. R equal / G equal / B equal / BK 3% / W 7% / Global brightness equal (black and white are modified. JPEG Sign : FF D8 FF E1 00 18 (different. JPEG Data block : 201344 bytes (9.2% of Raw size. JPEG Header block : 222 bytes (almost same as original. If needed, use sharp (and slow) RGB->YUV conversion.- Info : gd-jpeg v1.0 (IJG JPEG v62) / Q 80 The compressor makes several passes of partial encoding in order to get as close as possible to this target.Įnable multi-threaded encoding: 0 = disabled, 1 = enabled. The default value is 80.Ī target size (in bytes) to try and reach for the compressed output. The possible range goes from 0 (algorithm is off) to 100 (the maximal effect). Spatial noise shaping (SNS) refers to a general collection of built-in algorithms used to decide which area of the picture should use relatively less bits, and where else to better transfer these bits. The amplitude of the spatial noise shaping. Maximum number of passes to target compression size or PSNR.Ĭhoose from 1 to 4, the maximum number of segments to use. Lower value might result in faster processing time at the expense of larger file size and lower compression quality.Ĭhoose from: 0=none, 1=segment-smooth, 2=pseudo-random dithering.Ĭhoose 0 for no quality degradation and 100 for maximum degradation. When higher values are utilized, the encoder spends more time inspecting additional encoding possibilities and decide on the quality gain. It controls the trade off between encoding speed and the compressed file size and quality. Image-hint= default, photo, picture, graph Typical values are usually in the range of 20 to 50. The higher the value, the smoother the image appears. ![]() Higher values increase the strength of the filtering process applied after decoding the image. The strength of the deblocking filter, between 0 (no filtering) and 100 (maximum filtering). Return a similar compression to that of JPEG but with less degradation. When enabled, the algorithm spends additional time optimizing the filtering strength to reach a well-balanced quality. It's disabled by default to help compressibility. Lossless compression of alpha is achieved using a value of 100, while the lower values result in a lossy compression. The compression value for alpha compression between 0 and 100. Predictive filtering method for alpha plane: 0=none, 1=fast, 2=best. Encode the alpha plane: 0 = none, 1 = compressed.
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