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 the case of text

Convert and restore garbled Japanese text

Look up Whois information for domains and IP addresses

Open multiple URLs at once

Convert a domain name to an IPv4 address

List the HTTP requests that occur when loading a URL

Create QR codes for a variety of purposes

Check whether HTTP/2 is enabled

Check your IP address along with network and device information

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

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

Generate secure random passwords

Create self-signed SSL certificates for free

Confirm that an SSL certificate is correctly installed on a server

Unlock a password-protected PDF

Check the security measures in HTTP response headers

Convert SSL certificates to various formats

Protect a PDF by setting a password

Create a hashed password to write into a .htpasswd file

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

Generate and verify cron expressions

Check the syntax of MySQL queries

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

Check the syntax of PHP code

Check HTML for syntax errors or formatting errors

Check and validate PHP, JavaScript, and Python regular expressions

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

Extract TITLE, DESCRIPTION, ROBOTS, and CANONICAL URL

Extract all images on a website

Create and edit HTML visually

Check HTML for syntax errors or formatting errors

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

Extract external and internal links

Convert an Excel table into an HTML TABLE TAG

Preview Markdown in real time

Convert between plain text and ASCII

Decode a Base64 string into an image

Convert to Unicode characters and search for Unicode characters

Two-way conversion between binary data and plain text

Convert between text and decimal

Convert images from PNG to JPG, or JPG to PNG

Convert between text and hexadecimal (HEX)

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

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

Count elapsed time to 1/100 of a second

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

Extract color codes from an image or image URL

Get a color code from a color palette or color space

Generate favicons and app icons from an image

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

Add text to images to create memes

Extract color codes from an image or image URL

Convert images from PNG to JPG, or JPG to PNG

Extract all images from a PDF

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

Roll dice on screen and display random 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

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

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

Convert a string to Punycode, or convert Punycode back

Check the DNS records of a domain name

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

Convert videos to GIF

Extract all images from a PDF

Unlock a password-protected PDF

Add page numbers to each page of a PDF

Protect a PDF by setting a password

Convert a web page into a PDF file

Convert various files to PDF

Compress a PDF to reduce its file size

Add a header and footer to each page of a PDF

Count characters, bytes, lines, and more

Convert various units such as length and force

Convert temperature units

Convert time units

Convert units of dry volume and capacity

Convert units of length and distance

Convert angle units

Convert units of energy

Trim audio files

Convert audio files

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

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.

Add text to images to create memes

Generate and verify cron expressions

Create QR codes for a variety of purposes

Generate a screenshot image from a URL

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 color codes from an image or image URL

Get a color code from a color palette or color space

Extract all images from a PDF

Extract external and internal links

Check the syntax of MySQL queries

Check the syntax of PHP code

Check HTML for syntax errors or formatting errors

Format and validate JSON for readability

Paste a JWT to view its contents and verify the signature

Format XML strings

Format HTML code in your preferred style

Format SQL statements for better readability

Format JavaScript and CSS source code

Format and validate JSON for readability

Create self-signed SSL certificates for free

Confirm that an SSL certificate is correctly installed on a server

Convert SSL certificates to various formats

Display the contents of a CSR (Certificate Signing Request)

Display the contents of an SSL certificate

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

Randomly divide into teams and pick organizers or representatives

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

Record scores from golf Olympics (putting competition on the green) and automatically calculate rankings

Roll dice on screen and display random results

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

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

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

Measure rapid-fire count and CPS for the space key or any key

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

A tool that converts text into gyaru character style for display

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

Roll dice on screen and display random results

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