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examples/images/README.md

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+Example Images
+==============
+
+This directory contains example WebP encoded files and PNG source files.
+
+## Image Credits
+
+### Photos by Author
+
+These images are taken by author.
+These photos are licensed under the Creative Commons Attribution 3.0.
+You can also use these images under the same as [go-libwebp's license](../LICENSE).
+
+#### cosmos.png
+
+The cosmos taken in Nokono-shima (Nokono Island), Fukuoka, JAPAN.
+
+![cosmos.png](cosmos.png)
+
+WebP file is generated by following command:
+
+```sh
+$ cwebp -q 90 cosmos.png -o cosmos.webp
+Saving file 'cosmos.webp'
+File:      cosmos.png
+Dimension: 1024 x 768
+Output:    76954 bytes Y-U-V-All-PSNR 45.87 47.63 48.10   46.44 dB
+block count:  intra4: 2972
+intra16: 100  (-> 3.26%)
+skipped block: 1 (0.03%)
+bytes used:  header:            249  (0.3%)
+mode-partition:  15161  (19.7%)
+Residuals bytes  |segment 1|segment 2|segment 3|segment 4|  total
+macroblocks:     |       0%|      11%|      33%|      54%|    3072
+quantizer:       |      12 |      11 |       9 |       8 |
+filter level:    |       4 |       2 |       2 |       4 |
+```
+
+#### butterfly.png
+
+The butterfly taken in Ishigaki-jima (Ishigaki Island) in Okinawa, JAPAN.
+
+![butterfly.png](butterfly.png)
+
+WebP file is generated by following command:
+
+```sh
+$ cwebp -q 90 butterfly.png -o butterfly.webp
+Saving file 'butterfly.webp'
+File:      butterfly.png
+Dimension: 1024 x 768
+Output:    79198 bytes Y-U-V-All-PSNR 45.50 48.71 49.90   46.44 dB
+block count:  intra4: 2775
+intra16: 297  (-> 9.67%)
+skipped block: 0 (0.00%)
+bytes used:  header:            383  (0.5%)
+mode-partition:  13227  (16.7%)
+Residuals bytes  |segment 1|segment 2|segment 3|segment 4|  total
+macroblocks:     |       1%|       7%|      14%|      75%|    3072
+quantizer:       |      12 |      12 |      10 |       8 |
+filter level:    |       4 |       3 |       2 |       6 |
+```
+
+#### kinkaku.png
+
+Kinkaku taken in Kyoto, JAPAN.
+
+![kinkaku.png](kinkaku.png)
+
+WebP file is generated by following command:
+
+```sh
+$ cwebp -q 90 kinkaku.png -o kinkaku.webp
+Saving file 'kinkaku.webp'
+File:      kinkaku.png
+Dimension: 1024 x 768
+Output:    186300 bytes Y-U-V-All-PSNR 43.86 47.25 48.26   44.81 dB
+block count:  intra4: 2775
+intra16: 297  (-> 9.67%)
+skipped block: 243 (7.91%)
+bytes used:  header:            425  (0.2%)
+mode-partition:  16737  (9.0%)
+Residuals bytes  |segment 1|segment 2|segment 3|segment 4|  total
+macroblocks:     |       2%|      28%|      40%|      28%|    3072
+quantizer:       |      12 |      11 |       9 |       6 |
+filter level:    |       4 |       2 |       2 |       1 |
+```
+
+### From Google WebP Gallery
+
+These images picked up from [WebP Gallery](https://developers.google.com/speed/webp/gallery) in Google Developers.
+
+#### yellow-rose-3.png
+
+"Free Stock Photo in High Resolution - Yellow Rose 3 - Flowers" by Jon Sullivan
+
+This image is clipped by Google and licensed under [Creative Commons Attribution 3.0](https://creativecommons.org/licenses/by/3.0/). The Source of this image is in the public domain.
+
+<div style="background:url('./checkerboard.png')">
+<img title="yellow-rose-3.png" src="yellow-rose-3.png">
+</div>
+
+#### fizyplankton.png
+
+"baby tux for my user page" by Fizyplankton.
+
+This image file is in the public domain.
+
+<div style="background:url('./checkerboard.png')">
+<img title="fizyplankton.png" src="fizyplankton.png">
+</div>