Tool help test

1. Check the length of text:
https://mothereff.in/byte-counter

2. Checked the byte of text:
http://bytesizematters.com

3. Check interface web reponsive:
http://mattkersley.com/responsive

4. Collage image:
http://www.photovisi.com

5. Check color of website:
http://www.checkmycolours.com
http://www.accesskeys.org/tools/color-contrast.html

6. Check html:
http://validator.w3.org
http://www.cleancss.com/html-beautify/
https://jigsaw.w3.org/css-validator

7.Check CSS:
https://8f99eab483de67c230b8df5996af6b11f3c9da47.googledrive.com/host/0B4DGSbbFJaMuX1M2S1NNSXpoMlk
http://www.cleancss.com/css-beautify/

8.Check Javascript:
http://www.jspretty.com

9. Check keywords on seobook:
http://tools.seobook.com

10. Help use test selemiun:
http://www.pushtotest.com

11. Check security of web:
http://securitydaily.net
http://www.unmaskparasites.com

12. Check SEO:
http://www.seoptimer.com/