छोटे अक्षर
Converts every letter to lowercase. The fastest way to tidy up text that arrived in capitals, and to normalise email addresses, tags, usernames and slugs before they go into a database.
Input
CONVERT This LineOutput
convert this lineWhy lowercase matters technically
Many systems compare strings exactly, so "Admin@Example.com" and "admin@example.com" can be treated as two different values. Lowercasing before you store or compare removes a whole class of duplicate-record bugs. The same applies to tags, slugs and lookup keys.
What it will not fix
Lowercasing is indiscriminate: proper nouns lose their capitals too. If you want readable prose rather than a normalised key, use Sentence case instead — it lowercases everything and then restores the capital at the start of each sentence.
अक्सर पूछे जाने वाले प्रश्न
Will it break my email addresses?
No. Domain names are case-insensitive, and in practice mailbox names are too, so lowercasing an address is safe and is what most systems do before storing it.
Does it handle Turkish dotted and dotless i?
The conversion uses your browser's own Unicode rules. For most languages that is exactly right; Turkish and Azerbaijani treat I and İ specially, so check those two cases by eye if your text is in those languages.