RAKKOTOOLS

Extract domain names from text and web pages (URLs)

Extract email addresses from text and remove duplicates

Count characters, bytes, lines, and more

Compare text and show the differences

Sort a list

Convert and restore garbled Japanese text

Search and replace text (supports regular expressions)

Convert hiragana and katakana names to Korean (Hangul) characters

Look up Whois information for domains and IP addresses

Open multiple URLs at once

Convert a domain name to an IPv4 address

Convert a string to Punycode, or convert Punycode back

Display the HTTP response headers sent by a web server

Check your IP address along with network and device information

Check the state of ports on an IP address or host name

Check email address format and the reachability of the domain and MX records

Extract TITLE, DESCRIPTION, ROBOTS, and CANONICAL URL

Check the size and appearance of the OGP image, title, and description when sharing on social media

Extract headings, TITLE, and page character count

Create llms.txt for AI crawlers from form input

Detect WordPress themes, plugins, and servers from a URL

Create self-signed SSL certificates for free

Generate secure random passwords

Display the contents of an SSL certificate

Convert SSL certificates to various formats

Pair-check an SSL certificate against a private key or a CSR file

Display the contents of a CSR (Certificate Signing Request)

Create a hashed password to write into a .htpasswd file

Check the security measures in HTTP response headers

Check HTML for syntax errors or formatting errors

Validate whether XML is valid against an XML schema (XSD)

Check the syntax of MySQL queries

Generate and verify cron expressions

Convert strings with MD5/SHA1/SHA256 and other algorithms to generate hash values all at once

Create an XML schema definition (XSD) from XML

Format HTML code in your preferred style

Format SQL statements for better readability

Extract TITLE, DESCRIPTION, ROBOTS, and CANONICAL URL

Extract all images on a website

Check HTML for syntax errors or formatting errors

Extract external and internal links

Encode convertible characters into HTML entities and decode HTML entities into characters

Convert an Excel table into an HTML TABLE TAG

Create and edit HTML visually

Preview Markdown in real time

Convert between plain text and ASCII

Convert to Unicode characters and search for Unicode characters

Decode a Base64 string into an image

Convert between text and decimal

Convert and restore garbled Japanese text

Two-way conversion between binary data and plain text

Convert audio files

Generate favicons and app icons from an image

Create a count-up timer online

Create, share, and embed a digital counter that automatically counts up at a specified interval from a particular date and time.

Show the current time based on geolocation

Create an alarm timer

Create a customizable countdown timer. Supports URL sharing and embedding

Show the date and time in cities around the world

Count elapsed time to 1/100 of a second

Convert a date and time to a timestamp, and a timestamp to a date and time

Generate favicons and app icons from an image

Get a color code from a color palette or color space

Extract color codes from an image or image URL

Draw one word from each of 4 slots to create a single-sentence illustration prompt. Features fixed slots and history.

Generate CSS gradient code with live preview by simply selecting colors and angles

Generate an 11-shade palette (50–950) and configuration code for Tailwind CSS from a single Hex color code

Generate ASCII art from text or images

Extract all images on a website

Make a specific color in an image transparent to create a PNG image

Decode a Base64 string into an image

Generate a screenshot image from a URL

Generate favicons and app icons from an image

Add text to images to create memes

Convert videos to GIF

Randomly divide into teams and pick organizers or representatives

Randomly draw one from a list of numbers, names, and more

Create a ladder lottery from participants and outcomes, then trace the lines to reveal results

Arrange items you input in a circular wheel, spin it, and randomly select one

Get random conversation topics suited to any scene with just one button. Includes slot machine-style animation

Flip a coin and randomly decide heads or tails

Choose a worldview and gender to generate up to 20 fictional full names at once

Draw one word from each of 4 slots to create a single-sentence illustration prompt. Features fixed slots and history.

Extract domain names from text and web pages (URLs)

Look up Whois information for domains and IP addresses

Convert a domain name to an IPv4 address

Convert a string to Punycode, or convert Punycode back

Show regional information from an IP address, host, or domain

Check the DNS records of a domain name

Encode characters and symbols into special codes, or decode URL-encoded strings

Diagnose name resolution by querying multiple DNS servers simultaneously

Convert videos to GIF

Extract all images from a PDF

Extract specified pages from a PDF to create a new PDF

Convert a web page into a PDF file

Remove specified pages from a PDF

Unlock a password-protected PDF

Compress a PDF to reduce its file size

Add a header and footer to each page of a PDF

Convert various files to PDF

Count characters, bytes, lines, and more

Convert units of data capacity and information

Convert area units

Convert units such as electric charge, current, and resistance

Quickly calculate a variety of expressions

Visualize your 3 biorhythm cycles—physical, emotional, and intellectual—as graphs based on your birth date

Convert units of weight and mass

Convert units of energy

Convert audio files

Trim audio files

Reads the current time aloud and automatically announces it at regular intervals you choose

Look up Whois information for domains and IP addresses

Convert a domain name to an IPv4 address

Check your IP address along with network and device information

Show regional information from an IP address, host, or domain

Calculate the range of IP addresses based on an IPv4 or IPv6 CIDR address

Convert an IPv4 address into IPv6 notation

Determine if your connection supports IPv6

Generate ASCII art from text or images

Create a count-up timer online

Create username suggestions for SNS and games from your favorite words

Create, share, and embed a digital counter that automatically counts up at a specified interval from a particular date and time.

Generate and verify cron expressions

Generate a screenshot image from a URL

Convert strings with MD5/SHA1/SHA256 and other algorithms to generate hash values all at once

Generate secure random passwords

Check the size and appearance of the OGP image, title, and description when sharing on social media

Create username suggestions for SNS and games from your favorite words

Extract domain names from text and web pages (URLs)

Extract TITLE, DESCRIPTION, ROBOTS, and CANONICAL URL

Extract all images on a website

Extract email addresses from text and remove duplicates

Extract all images from a PDF

Extract external and internal links

Get a color code from a color palette or color space

Extract specified pages from a PDF to create a new PDF

Check HTML for syntax errors or formatting errors

Check the syntax of MySQL queries

Check the syntax of PHP code

Format and validate JSON for readability

Paste a JWT to view its contents and verify the signature

Format HTML code in your preferred style

Format SQL statements for better readability

Format XML strings

Format JavaScript and CSS source code

Format and validate JSON for readability

Create self-signed SSL certificates for free

Display the contents of an SSL certificate

Convert SSL certificates to various formats

Pair-check an SSL certificate against a private key or a CSR file

Display the contents of a CSR (Certificate Signing Request)

Confirm that an SSL certificate is correctly installed on a server

Randomly divide into teams and pick organizers or representatives

Randomly draw one from a list of numbers, names, and more

Create a ladder lottery from participants and outcomes, then trace the lines to reveal results

Arrange items you input in a circular wheel, spin it, and randomly select one

Flip a coin and randomly decide heads or tails

Move a snake using direction buttons, arrow keys, or swipe. Eat food to grow your body in this snake game.

Play instantly in your browser—a one-player card game (Klondike)

Roll dice on screen and display random results

Randomly divide into teams and pick organizers or representatives

Generate ASCII art from text or images

Randomly draw one from a list of numbers, names, and more

Add text to images to create memes

Visualize your 3 biorhythm cycles—physical, emotional, and intellectual—as graphs based on your birth date

Create a ladder lottery from participants and outcomes, then trace the lines to reveal results

Arrange items you input in a circular wheel, spin it, and randomly select one

Get random conversation topics suited to any scene with just one button. Includes slot machine-style animation