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Ascii validator

World's simplest ascii tool

A simple browser-based utility that validates ASCII data. Just paste your ASCII text in the input area and you will instantly get the ASCII status in the output area. If the input contains only ASCII characters, you'll get a green badge, otherwise a red badge. Fast, free, and without ads. Import ASCII – get ASCII status. Created by computer nerds from team Browserling.
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Extended ASCII
Expand the acceptable characters from 7 bits to 8 bits (0 to 255).
Ascii validator tool What is a ascii validator?
This web application validates ASCII data. It runs through each input character and checks if it belongs to the 7-bit ASCII character set. If the symbol's ASCII code is in the range from 0 to 127, the result is positive and a green badge is shown, if the code point is 128 or more, the result is negative and a red badge is shown. If you get a red badge, then each non-ASCII character is displayed on the screen together with its code point and the position in the text. You can also validate the extended 8-bit ANSI character set. By activating the Allow Extended ASCII option, you'll expand the range of acceptable values from 0 to 255. Asciiabulous!
Ascii validator examples Click to use
Validate a Proverb
In this example, we validate a proverb and get a positive result. Indeed, the input string uses only lowercase and uppercase Latin letters, as well as the dot character. All these code positions belong to the ASCII table range from 0 to 127.
Good things come to those who wait.
Required options
These options will be used automatically if you select this example.
Expand the acceptable characters from 7 bits to 8 bits (0 to 255).
Extended ASCII
In this example, we enable the extended ASCII (ANSI) option to validate a German quote by Franz Kafka. The ANSI table includes all 128 7-bit ASCII characters plus 128 8-bit characters. Additional symbols include glyphs from foreign languages (such as German letters ä and ö), as well as special characters (such as copyright sign © and quotation brackets «»). Since the extended ASCII option is activated, the badge is green, but if you turn off this option, the badge will turn red as only the basic ASCII symbols will be allowed.
«Jeder, der sich die Fähigkeit erhält, Schönes zu erkennen, wird nie alt werden.» © Franz Kafka
Required options
These options will be used automatically if you select this example.
Expand the acceptable characters from 7 bits to 8 bits (0 to 255).
Invalid ASCII
This example validates the input text and shows a red badge as the result. The text contains two characters that aren't in the ASCII table. The glyph 🍫 is a Unicode character and has the code position U+1F36B and the emoji 🤔 has the code point U+1F914. Both values do not belong to 7-bit or 8-bit ASCII sets, therefore, regardless of the extended ASCII option's state, the result is always negative.
Nine out of ten people like chocolate 🍫. The tenth person always lies 🤔.
Invalid symbols: symbol: 🍫, code point: 1f36b, position: 39 symbol: 🤔, code point: 1f914, position: 71
Required options
These options will be used automatically if you select this example.
Expand the acceptable characters from 7 bits to 8 bits (0 to 255).
Pro tips Master online ascii tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlineasciitools.com/validate-ascii?input=Good%20things%20come%20to%20those%20who%20wait.&extended-ascii=false
All ascii tools
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Quickly convert ASCII characters to binary numbers.
Quickly convert binary numbers to ASCII characters.
Quickly convert ASCII chars to octal values.
Quickly convert octal values to a ASCII chars.
Quickly convert ASCII values to decimal numbers.
Quickly convert decimal numbers to ASCII values.
Quickly convert ASCII symbols to hexadecimal values.
Quickly convert hexadecimal numbers to ASCII symbols.
Quickly convert ASCII to arbitrary base numbers.
Quickly convert numbers of arbitrary base to ASCII.
Quickly draw a 7-bit or extended 8-bit ASCII table.
Quickly generate 7-bit or extended 8-bit ASCII symbols.
Quickly generate random ASCII characters.
Quickly draw ASCII art from the given text input.
Quickly create an image from ASCII text.
Quickly convert ASCII text to HTML escape codes.
Quickly convert HTML entities to ASCII text.
Quickly convert ASCII to URL-encoding.
Quickly convert URL-encoded ASCII back to ASCII.
Quickly convert an ASCII string to raw bytes.
Quickly convert raw bytes to an ASCII string.
Quickly convert ASCII bytes to UTF8 characters.
Quickly convert UTF8 characters to ASCII bytes.
Quickly encode ASCII text to Morse code.
Quickly decode Morse code back to ASCII.
Quickly base64-encode ASCII string.
Quickly base64-decode previously encoded ASCII string.
Quickly convert ASCII to a Data URL.
Quickly convert a Data URL to ASCII.
Quickly make all ASCII characters lowercase.
Quickly make all ASCII characters uppercase.
Quickly randomize the case of each ASCII letter.
Quickly flip one or more bits in every ASCII character.
Quickly shuffle bits in every character of an ASCII string.
Quickly convert ASCII data to Unicode symbols.
Quickly convert Unicode symbols to ASCII data.
Quickly check if all input characters are ASCII.
Coming soon These ascii tools are on the way
Convert ASCII to JPG
Create a JPG image from ASCII art.
Convert JPG to ASCII
Create ASCII art from a JPG image.
Convert ASCII to PNG
Create a PNG image from ASCII art.
Convert PNG to ASCII
Create ASCII art from a PNG image.
Convert ASCII to Chemical Elements
Use chemical element names for ASCII values.
Convert ASCII to EBCDIC
Convert ASCII charset to EBCDIC charset.
Convert EBCDIC to ASCII
Convert EBCDIC charset to ASCII charset.
Rotate ASCII Characters
Rotate ASCII chars to the left or to the right.
Randomize ASCII Order
Randomize the order of ASCII characters.
Reverse ASCII Characters
Reverse the order of ASCII chars.
Convert ASCII to Integer
Convert ASCII characters to integers.
Convert Integer to ASCII
Convert integers to ASCII values.
Convert ASCII to Keycodes
Convert ASCII characters to keyboard keycodes.
Convert Keycodes to ASCII
Convert keyboard keycodes to ASCII values.
Find ASCII Length
Calculate the length of an ASCII string.
Create an ASCII Table
Draw an ASCII table from tabular data.
Let Zalgo Damage ASCII
Unleash Zalgo on ASCII data.