Popular Tools

These are the most-used tools on Biotr.link, and they are free like everything else:

• Meta tags checker – Get and verify the meta tags of any website.
• Bcrypt generator – Generate a bcrypt password hash for any string input.
• Password strength checker – Make sure your passwords are good enough.
• YouTube thumbnail downloader – Download any YouTube video thumbnail in all available sizes.
• Decimal converter – Convert text to decimal and the other way around.
• Whois Lookup – Get all possible details about a domain name.

Checker Tools

Check and verify different types of things, from domains to passwords, without paying anything.

• DNS Lookup – Find A, AAAA, CNAME, MX, NS, TXT and SOA DNS records of a host.
• IP Lookup – Get approximate IP details.
• Reverse IP Lookup – Find the domains and hosts associated with an IP.
• SSL Lookup – Get all possible details about an SSL certificate.
• Whois Lookup – Find registration details about any domain name.
• Ping – Ping a website, server or port.
• HTTP headers lookup – See all the HTTP headers a URL returns for a typical GET request.
• HTTP/2 Checker – Check whether a website is using the HTTP/2 protocol.
• Brotli Checker – Check whether a website is using Brotli compression.
• Safe URL checker – Check if a URL is marked as safe or unsafe by Google.
• Google cache checker – Check if a URL is cached by Google.
• URL redirect checker – Check for 301 and 302 redirects of a URL, up to 10 redirects.
• Password strength checker – Make sure your passwords are good enough.
• Meta tags checker – Get and verify the meta tags of any website.
• Website hosting checker – Find the web host of a given website.
• File mime type checker – Get details of any file type, such as the mime type or last edit date.
• Gravatar checker – Get the gravatar.com avatar for any email.

Text Tools

Create, modify, and improve text content with these free tools.

• Text separator – Separate text back and forth by new lines, commas, dots and more.
• Email extractor – Extract email addresses from any text content.
• URL extractor – Extract http/https URLs from any text content.
• Text size calculator – Get the size of a text in Bytes, Kilobytes or Megabytes.
• Duplicate lines remover – Easily remove duplicate lines from a text.
• Text to speech – Generate text to speech audio using the Google translator API.
• IDN Punnycode converter – Convert IDN to Punnycode and back.
• Case converter – Convert text to lowercase, UPPERCASE, camelCase and more.
• Character counter – Count the characters and words of a given text.
• List randomizer – Convert a list of text into a randomized list.
• Reverse words – Reverse the words in a sentence or paragraph.
• Reverse letters – Reverse the letters in a sentence or paragraph.
• Emojis remover – Remove all the emojis from any given text.
• Reverse list – Reverse a list of text lines.
• List alphabetizer – Order text lines alphabetically (A-Z or Z-A).
• Upside down text generator – Flip text upside down.
• Old English text generator – Convert normal text to the Old English font type.
• Cursive text generator – Convert normal text to the cursive font type.
• Palindrome checker – Check if a word or phrase reads the same backwards as forwards.

Converter Tools

Easily convert data between formats, all at no cost.

• Base64 encoder – Encode any string input to Base64.
• Base64 decoder – Decode Base64 input back to a string.
• Base64 to Image – Decode Base64 input to an image.
• Image to Base64 – Transform an image into a Base64 string.
• URL encoder – Encode any string input to URL format.
• URL decoder – Decode URL input back to a normal string.
• Color converter – Convert your color to multiple other formats.
• Binary converter – Convert text to binary and back.
• Hex converter – Convert text to hexadecimal and back.
• Ascii converter – Convert text to ASCII and back.
• Decimal converter – Convert text to decimal and back.
• Octal converter – Convert text to octal and back.
• Morse converter – Convert text to Morse code and back.
• Number to words converter – Convert a number to written, spelled-out words.

Generator Tools

Generate useful data, links, and hashes, free of charge.

Link and content generators

• PayPal link generator – Generate a PayPal payment link.
• Signature generator – Generate your own custom signature and download it.
• Mailto link generator – Generate mailto links with subject, body, cc, bcc and get the HTML code.
• UTM link generator – Add valid UTM parameters and generate a trackable link.
• WhatsApp link generator – Generate WhatsApp message links.
• YouTube Timestamp link generator – Generate YouTube links with an exact start timestamp.
• Slug generator – Generate a URL slug for any string input.
• Lorem Ipsum generator – Generate dummy text with Lorem Ipsum.
• Password generator – Generate passwords with custom length and settings.
• Random number generator – Generate a random number between a given range.
• UUID v4 generator – Generate v4 UUIDs (Universally Unique Identifiers).

Hash generators

• Bcrypt generator – Generate a Bcrypt hash for any string input.
• MD2 generator – Generate a MD2 hash for any string input.
• MD4 generator – Generate a MD4 hash for any string input.
• MD5 generator – Generate a MD5 hash for any string input.
• Whirlpool generator – Generate a Whirlpool hash for any string input.
• SHA-1 generator – Generate a SHA-1 hash for any string input.
• SHA-224 generator – Generate a SHA-224 hash for any string input.
• SHA-256 generator – Generate a SHA-256 hash for any string input.
• SHA-384 generator – Generate a SHA-384 hash for any string input.
• SHA-512 generator – Generate a SHA-512 hash for any string input.
• SHA-512/224 generator – Generate a SHA-512/224 hash for any string input.
• SHA-512/256 generator – Generate a SHA-512/256 hash for any string input.
• SHA-3/224 generator – Generate a SHA-3/224 hash for any string input.
• SHA-3/256 generator – Generate a SHA-3/256 hash for any string input.
• SHA-3/384 generator – Generate a SHA-3/384 hash for any string input.
• SHA-3/512 generator – Generate a SHA-3/512 hash for any string input.

Developer Tools

Highly useful tools mainly for developers, though anyone can use them for free.

• HTML minifier – Minify your HTML by removing unnecessary characters.
• CSS minifier – Minify your CSS by removing unnecessary characters.
• JS minifier – Minify your JavaScript by removing unnecessary characters.
• JSON validator & beautifier – Validate JSON content and make it look good.
• SQL formatter/beautifier – Format and beautify your SQL code.
• HTML entity converter – Encode or decode HTML entities.
• BBCode to HTML – Convert forum-type BBCode snippets to raw HTML.
• Markdown to HTML – Convert Markdown snippets to raw HTML.
• HTML tags remover – Remove all HTML tags from a block of text.
• User agent parser – Parse details from user agent strings.
• URL parser – Parse details from any URL.

Image Manipulation Tools

Compress and convert image files in the most popular formats, with no fees or limits on which tools you can use.

Image optimizer

• Image optimizer – Compress and optimize images for a smaller size but still high quality.

Image converters

PNG converters

• PNG to JPG – Convert PNG image files to JPG.
• PNG to WEBP – Convert PNG image files to WEBP.
• PNG to BMP – Convert PNG image files to BMP.
• PNG to GIF – Convert PNG image files to GIF.
• PNG to ICO – Convert PNG image files to ICO.

JPG converters

• JPG to PNG – Convert JPG image files to PNG.
• JPG to WEBP – Convert JPG image files to WEBP.
• JPG to GIF – Convert JPG image files to GIF.
• JPG to ICO – Convert JPG image files to ICO.
• JPG to BMP – Convert JPG image files to BMP.

WEBP converters

• WEBP to JPG – Convert WEBP image files to JPG.
• WEBP to GIF – Convert WEBP image files to GIF.
• WEBP to PNG – Convert WEBP image files to PNG.
• WEBP to BMP – Convert WEBP image files to BMP.
• WEBP to ICO – Convert WEBP image files to ICO.

BMP converters

• BMP to JPG – Convert BMP image files to JPG.
• BMP to GIF – Convert BMP image files to GIF.
• BMP to PNG – Convert BMP image files to PNG.
• BMP to WEBP – Convert BMP image files to WEBP.
• BMP to ICO – Convert BMP image files to ICO.

ICO converters

• ICO to JPG – Convert ICO image files to JPG.
• ICO to GIF – Convert ICO image files to GIF.
• ICO to PNG – Convert ICO image files to PNG.
• ICO to WEBP – Convert ICO image files to WEBP.
• ICO to BMP – Convert ICO image files to BMP.

GIF converters

• GIF to JPG – Convert GIF image files to JPG.
• GIF to ICO – Convert GIF image files to ICO.
• GIF to PNG – Convert GIF image files to PNG.
• GIF to WEBP – Convert GIF image files to WEBP.
• GIF to BMP – Convert GIF image files to BMP.

Time Converter Tools

Date and time conversion tools, free as well.

• Unix Timestamp to Date – Convert a Unix timestamp to UTC and your local date.
• Date to Unix Timestamp – Convert a date to the Unix timestamp format.

Misc Tools

Other random but great and useful tools.

• YouTube thumbnail downloader – Download any YouTube video thumbnail in all available sizes.
• QR code reader – Upload a QR code image and extract the data out of it.
• Barcode reader – Upload a barcode image and extract the data out of it.
• Exif reader – Upload an image and extract its Exif data.
• Color picker – Select a color from the color wheel and get the result in any format.

Why Choose Biotr.link Tools?

100% free. Every tool listed above, from the Meta tags checker to the SHA-3/512 generator and every image converter, costs nothing to use. You never need to pay, upgrade, or unlock anything.

Privacy focused. The tools are built with your privacy in mind, so you can check, convert, and generate with confidence.

Instant results. Enter your input and get your answer right away, with no long waiting or complicated setup.

Simple interface. Each tool does one job in a clean layout that anyone can understand, with no technical background required.

All in one place. Checkers, text tools, converters, generators, developer utilities, image tools, time converters, and miscellaneous helpers in one library.

Start using these free tools today at Biotr.link, the only link for all your links.