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Tooler App troubleshoots the non-well-formed tags and delivers the script in a pretty formatting, Build Resume, Design Business Cards, Compare Heights, and more services. Tooler App provides FREE reliable services with high quality, excellent performance, and easy steps. There's no wait time or a required sign-up form. We're not storing or selling data. It's easy to apply your filters and clean up the dirty code in one click. For more details on how to use our Services, please Click here!

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Tooler - 2025

HTML, or HyperText Markup Language, is the standard language used to create and design documents on the web. It serves as the backbone of most web pages, allowing developers to structure content and present it in a way that browsers can interpret and display. HTML is not a programming language; rather, it is a markup language that uses tags to define elements on a webpage. At the core of HTML are elements, which are building blocks that consist of tags that denote the start and end of an element. These tags are typically surrounded by angle brackets.

Dirty HTML: This term is often used to describe HTML code that includes excessive inline styles, outdated tags, missing closing tags, improper nesting, or unnecessary clutter. It does not follow best practices and can lead to performance issues in web applications.

Example of Dirty HTML:
Dirty HTML Example


In this example:

  • The <h1> tag is not properly closed.
  • The <p> tag is not closed.
  • The <img> tag lacks a closing >.

Unorganized HTML: This term refers to code that, while technically correct, is poorly structured or difficult to read due to lack of indentation, inconsistent formatting, or a lack of meaningful comments. This can make maintenance and updates challenging.

Example of Unorganized HTML:
Dirty HTML Example


In this example:

  • The HTML is all on one line, making it hard to read.
  • There’s no indentation or spacing, which complicates understanding the structure.

Our HTML Cleaner is a tool designed to process and clean HTML code by removing unwanted or unnecessary tags, attributes, inline styles, and potentially harmful elements. It can help to sanitize HTML for various purposes, such as ensuring it is safe, readable, or optimized for a specific use case (e.g., displaying user-generated content on a website). Here's a detailed breakdown of how our HTML cleaner works:

1. Parsing the HTML Document
  • Tokenization: The first step is to parse the HTML content into a form that the cleaner can work with, typically by breaking the HTML into its component parts (tags, text, attributes, etc.). This is done through a process called tokenization. For example, <a href="example.com">Link</a> might be tokenized into three parts: the opening <a> tag, the href attribute, and the closing </a> tag.

  • Document Object Model (DOM) Representation: The cleaner often constructs a DOM (Document Object Model) tree, which is a structured, hierarchical representation of the HTML document. This tree allows the cleaner to easily traverse and modify the document.

2. Removing Unwanted Tags
  • Whitelist: Cleaners often operate by defining a whitelist of allowed tags. For example, you may decide that <b>, <i>, <strong>, and <a> are acceptable, but <script>, <style>, and other potentially harmful or unnecessary tags are not. Any tags that are not on the whitelist are removed.

  • Blacklisting: Alternatively, an HTML cleaner can use a blacklist to specifically target and remove harmful or unwanted tags, like <script> for security purposes.

3. Sanitizing Attributes
  • Validating Attributes: Tags may contain attributes, and HTML cleaners typically validate these. For instance, a href attribute in an <a> tag should point to a safe URL. Cleaners may reject attributes that are suspicious or harmful, like javascript: URLs that could trigger malicious scripts.

  • Removing Unnecessary Attributes: Cleaners may also remove unnecessary attributes like style or class that don’t contribute to the desired final layout, or that could create inconsistencies in the rendered page.

4. Fixing Common HTML Errors
  • Malformed Tags: HTML code is often imperfect and may contain unclosed or improperly nested tags. Cleaners can automatically fix or correct these errors to ensure the document is well-formed and can be rendered correctly by web browsers.

  • Encoding Fixes: Sometimes, HTML may contain special characters (like &, <, or >) that are not properly escaped. Cleaners can ensure that special characters are properly encoded.

5. Whitespace and Formatting
  • Cleaners often standardize whitespace (e.g., removing excessive blank spaces, newlines, or tabs) and can reformat the document into a cleaner structure. This can help improve readability and reduce file size.
6. Output and Validation
  • Return Cleaned HTML: Once the cleaning process is complete, the tool will output a cleaner, safer version of the HTML.

  • Validation: Many HTML cleaners validate the final output against a set of standards (like W3C HTML specifications) to ensure that the cleaned HTML is valid and will render properly across different browsers.



Our Resume Builder is an online tool that helps individuals create professional resumes by guiding them through each section, offering a professional template, and providing formatting options. It often simplifies the process by organizing information in an easy-to-read format, ensuring that resumes adhere to industry standards.

How our Resume Builder Works

  1. Template: A professional template is selected by default.

  2. Inputting Information: The builder prompts the user to input details in sections, such as:

    • Upload Professional Photo
    • Personal Information
    • Achievements
    • Experience
    • Education
    • Projects
    • Skills

  3. Preview and Download: After completing the resume, the user can preview how it will look. Our builder allows you to download the resume in a PDF format.

This is how a typical resume builder works, guiding users step-by-step to create a polished, professional document tailored to their career goals.



Our Business Card Builder is an online tool that helps individuals create professional business cards by guiding them through each section, offering a professional template, and providing formatting options. It often simplifies the process by organizing information in an easy-to-read format, ensuring that business card adheres to the market standards.

How our Business Card Builder Works

  1. Business Card Template: A professional template is selected by default with front and back sides.

  2. Typing Business Information: The builder prompts the user to input details in sections, such as:

    • Upload Business Logo/Photo
    • Business Name
    • Business Service
    • Business Location
    • Business URL
    • Business Phone
    • Business Fax (Optional)

  3. Preview and Download: After completing the business card details, the user can preview how it will look. Our builder allows you to download the business card in a PDF format with 2 sides.

Get ready! We’re excited to announce that we are continuously enhancing our website with new features like resume and business card share links and other formats to improve your experience.



Our Height Comparison Calculator refers to how we compare the vertical measurements of two or more objects or people. This can involve comparing absolute heights (e.g., how tall someone is) or relative height (e.g., who is taller or shorter in a group). Using height comparison or considering height preferences before dating can have certain benefits, depending on individual priorities and preferences.

Basic Comparison of Two Heights

When comparing the height of two individuals or objects, we simply state which one is taller, shorter, or the same height.

  • Example 1:

    • Person A is 5'8" (173 cm).
    • Person B is 6'0" (183 cm).
    • Comparison: "Person B is taller than Person A by 4 inches."

  • Example 2:

    • Building A is 200 feet tall.
    • Building B is 150 feet tall.
    • Comparison: "Building A is taller than Building B by 50 feet."

Height Comparison Calculator Example
Height Comparison Calculator Example