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

Search and replace text (supports regular expressions)

Convert and restore garbled Japanese text

Convert the case of text

Open multiple URLs at once

Look up Whois information for domains and IP addresses

Convert a string to Punycode, or convert Punycode back

Convert a domain name to an IPv4 address

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

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

Check your IP address along with network and device information

Check the DNS records of a domain name

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

Create self-signed SSL certificates for free

Generate secure random passwords

Unlock a password-protected PDF

Display the contents of an SSL certificate

Create a hashed password to write into a .htpasswd file

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

Confirm that an SSL certificate is correctly installed on a server

Display the contents of a CSR (Certificate Signing Request)

Check HTML for syntax errors or formatting errors

Check the syntax of MySQL queries

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

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

Encode data into a JSON string, and decode a JSON string back into data

Check the syntax of PHP code

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

Convert an Excel table into an HTML TABLE TAG

Create and edit HTML visually

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

Preview Markdown in real time

Convert between plain text and ASCII

Decode a Base64 string into an image

Two-way conversion between binary data and plain text

Convert to Unicode characters and search for Unicode characters

Convert between text and decimal

Convert and restore garbled Japanese text

Generate favicons and app icons from an image

Convert videos to GIF

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.

Create an alarm timer

Show the current time based on geolocation

Create a customizable countdown timer. Supports URL sharing and embedding

Show the date and time in cities around the world

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

Count elapsed time to 1/100 of a second

Generate favicons and app icons from an image

Extract color codes from an image or image URL

Get a color code from a color palette or color space

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

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

Convert videos to GIF

Compress PNG/JPG images

Randomly divide into teams and pick organizers or representatives

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

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

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

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

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

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 string to Punycode, or convert Punycode back

Convert a domain name to an IPv4 address

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

Unlock a password-protected PDF

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

Convert various files to PDF

Add a header and footer to each page of a PDF

Add a text watermark to a PDF

Compress a PDF to reduce its file size

Count characters, bytes, lines, and more

Convert units of data capacity and information

Quickly calculate a variety of expressions

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

Convert area units

Convert units of energy

Convert units such as electric charge, current, and resistance

Convert units of energy, work, heat, and electrical 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

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

Check your IP address along with network and device information

Convert an IPv4 address into IPv6 notation

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

Generate ASCII art from text or images

Create a count-up timer online

Generate secure random passwords

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

Create an XML schema definition (XSD) from XML

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 external and internal links

Extract color codes from an image or image URL

Extract all images from a PDF

Get a color code from a color palette or color space

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 JavaScript and CSS source code

Format SQL statements for better readability

Format XML strings

Format and validate JSON for readability

Create self-signed SSL certificates for free

Display the contents of an SSL certificate

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

Confirm that an SSL certificate is correctly installed on a server

Display the contents of a CSR (Certificate Signing Request)

Convert SSL certificates to various formats

Randomly divide into teams and pick organizers or representatives

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

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

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

Flip a coin and randomly decide heads or tails

Roll dice on screen and display random results

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

A puzzle game where you slide tiles on a 4×4 board to combine matching numbers and reach 2048

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

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

Add text to images to create memes

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

A tool that converts text into gyaru character style for display

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