Sort ASCII Characters orders every ASCII character by its numeric code point so the result is deterministic and easy to compare.
Use ascending order when you want the lowest codes first, or descending order when a reverse numeric ordering is more useful for testing and inspection.
Spaces and punctuation participate in the sort because they have defined ASCII codes. The operation is character-based rather than word-based, so it does not try to preserve words or phrases.
Load the sample and compare the first few results with an ASCII chart. Then switch the direction and verify that reversing the numeric order produces the opposite sequence.
Repeated characters are preserved; sorting changes their positions but does not remove duplicates. Non-ASCII input is rejected so the numeric rule stays strictly within standard ASCII.
For a dependable fixture, keep the original and sorted values together. Sorting is useful when comparing two strings for equivalent character inventory because equal sorted forms can reveal that the strings contain the same characters even when their original order differs.
The result does not alter the source input. Copy and Download create explicit exports, while Clear resets the current state.
When a string contains control characters, remember that their codes can come before visible spaces and punctuation. The result may therefore look surprising but still be correct according to the ASCII table.
ASCII sorting is numeric sorting, not dictionary ordering. For example, all uppercase letters come before lowercase letters because their code ranges are different, and punctuation can appear before letters. This is useful when you need to reproduce the exact order a low-level program would get from direct code-point comparison.
Sorting is also a helpful preparation step for set comparison. If two strings contain the same characters with the same frequencies, sorting both strings produces the same ordered representation. That does not prove semantic equality, but it is a simple technique for comparing character inventories in small test cases.
When testing descending order, inspect both ends of the result. The largest code should appear first and the smallest should appear last. A few known values are usually enough to detect a reversed comparator, an accidental case-insensitive sort, or a sort based on visual labels rather than numeric codes.
Because duplicates are retained, the output length should always equal the input length. That invariant is useful in automated tests and makes it easy to detect accidental filtering. If you need unique sorted characters instead, combine this tool with duplicate removal and run the two transformations deliberately.