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Learn how to create a robots.txt file for free. Pick a preset, add rules and your sitemap, then validate, download and upload it. No signup needed.
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Typed in all caps by mistake? Learn how to change uppercase to lowercase in seconds in Word, Google Docs and Excel, or with a free online case converter.
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What happens when you flip a coin 100 times? Learn coin toss probability, why streaks happen, and try 100 free flips on FreeWWW
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Play a free word scramble game online with 3 difficulty levels, timed rounds, and hints. No signup, no download. Start unscrambling words right now
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Out of black ink? Replace black or near-black pixels with a dark color and try printing with color ink. Free, private, no signup, with live preview.
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Use a number base converter to switch between binary, decimal, hexadecimal, and octal systems. Learn number bases and conversion methods easily.
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