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Friday, October 30, 2026

Free Online Image Cropper - Crop Images to Any Size

Free Online Image Cropper

Crop your photos precisely, choose an aspect ratio, preview the result and download it in your preferred format.

Choose an image to get started

Supports JPG, PNG and WebP · Maximum file size: 20 MB

Image being cropped

Cropped Image Preview

Cropped image preview

Privacy friendly: your image is processed locally in your browser. It is not uploaded to any server.


Free Image Cropper Online – Crop Images Easily

Crop your images online with our Free Image Cropper. This easy-to-use tool allows you to crop photos and pictures to your preferred size directly in your browser. Select an image, adjust the crop area, choose an aspect ratio, preview the result, and download your cropped image in JPG, PNG, or WebP format.

Our online image cropping tool works without installing any software. You can crop images on desktop, tablet, or mobile devices, and your images are processed locally in your browser.


Key Features of Free Image Cropper

  • Free Online Image Cropping: Crop images quickly without paying or creating an account.
  • Custom Crop Selection: Adjust the crop area according to your requirements.
  • Multiple Aspect Ratios: Choose from Free, 1:1, 4:3, 16:9, 3:2, and 2:3 aspect ratios.
  • Multiple Output Formats: Download cropped images in JPG, PNG, or WebP format.
  • Live Crop Preview: Preview your cropped image before downloading.
  • Easy Crop Adjustment: Resize and reposition the crop area using the available handles.
  • No Software Installation: Use the tool directly in your web browser.
  • Privacy-Friendly Processing: Images are processed locally in your browser and are not uploaded to an external server.

How to Use the Image Cropper Online

  1. Upload an Image: Select an image from your device that you want to crop.
  2. Choose Aspect Ratio: Select your preferred aspect ratio or use the Free option for custom cropping.
  3. Adjust the Crop Area: Drag the crop area and its handles to select the portion of the image you want to keep.
  4. Select Output Format: Choose JPG, PNG, or WebP as your preferred download format.
  5. Preview the Result: Click the Preview button to check your cropped image.
  6. Download the Image: Download the final cropped image to your device.

Supported Image Formats

The Image Cropper supports common image formats that can be opened by your browser. You can choose one of the following output formats:

  • JPG: Suitable for photographs and everyday images.
  • PNG: Useful when you want lossless image output.
  • WebP: A modern image format that can provide smaller file sizes.

What Is an Image Cropper?

An image cropper is an online or offline tool that allows you to remove unwanted parts of an image. It helps you focus on a particular subject, improve image composition, and adjust pictures to specific dimensions or aspect ratios.

You can use an image cropper to prepare profile pictures, social media images, website graphics, product photos, thumbnails, and other visual content.


Frequently Asked Questions (FAQs)

1. Is this Image Cropper free to use?

Yes. Our online Image Cropper is free to use. You can upload an image, adjust the crop area, preview it, and download the cropped result without paying.

2. Do I need to install any software?

No. This tool works directly in your web browser. You do not need to install additional software or applications.

3. Which output formats are supported?

You can download your cropped image in JPG, PNG, or WebP format.

4. Can I crop images using a custom aspect ratio?

Yes. Select the Free aspect ratio option to create a custom crop area according to your requirements.

5. Does the Image Cropper work on mobile devices?

Yes. The tool is designed to work on desktop computers, tablets, and mobile devices with a supported web browser.

6. Are my uploaded images stored on your server?

No. Image processing takes place locally in your browser. Your selected image is not uploaded to an external server by this tool.

7. Can I preview an image before downloading it?

Yes. Use the Preview button to check the cropped result before downloading the final image.

8. What is the maximum image file size?

The tool supports image files up to 20 MB.


Related Free Online Tools

You may also find these free online image tools useful:

  • Image Resizer – Resize images to your preferred width and height.
  • Image Compressor – Compress images and reduce file size while maintaining good visual quality.
  • Favicon Generator – Create favicons for your website using an image or text.
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Wednesday, October 28, 2026

Free SQL Mock Data Generator Online - Generate Dummy Test Data

SQL Mock Data Generator

Generate realistic sample SQL data for testing, development and database practice.

Database Settings

Generate between 1 and 1,000 records per run.
Use the same seed and settings to reproduce generated data.

Table Columns

Choose each column's name and data generator. Auto ID columns are treated as database-generated IDs and are excluded from INSERT statements.

Generate SQL

Generate SQL INSERT statements for the selected database. Output is created locally in your browser.

Generated SQL Output

Records: 0
Insert Columns: 0
Database: MySQL

Data Preview

The preview shows up to 10 records. Generate SQL to create the complete downloadable SQL output.


Free SQL Mock Data Generator – Generate Sample SQL Data Online

Use our free SQL Mock Data Generator to create realistic sample data for database testing, SQL query development, software development, and learning purposes. Generate mock records with different column names and data types, then create sample SQL data that you can use in your development or testing environment.

This online tool helps developers, testers, and database learners generate test data without manually creating every record. It is useful for testing database queries, practicing SQL commands, preparing sample datasets, and checking how applications handle different types of data.


Key Features of SQL Mock Data Generator

  • Generate Mock SQL Data: Create sample data for database development and testing.
  • Custom Column Names: Define column names according to your database table requirements.
  • Multiple Data Generators: Choose from the available data generators to create different types of sample values.
  • Flexible Column Setup: Add or remove columns according to your testing needs.
  • Customizable Data Options: Configure additional options for supported generators when required.
  • Save Development Time: Generate sample records instead of entering every value manually.
  • Useful for Developers and Testers: Prepare mock data for testing database operations and application behavior.

How to Use the SQL Mock Data Generator

Step 1: Enter the Column Name
Enter a suitable name for the database column you want to include in your sample dataset.

Step 2: Select a Data Generator
Choose an available data generator that matches the type of sample value you need, such as a number, country, or custom-list value.

Step 3: Configure Generator Options
If the selected generator supports additional options, configure them according to your requirements.

Step 4: Add or Remove Columns
Add more columns to create a dataset with the required structure. Remove any columns that you no longer need.

Step 5: Generate Your Mock Data
Use the generator controls to create sample SQL data based on your selected column configuration.

Step 6: Review and Use the Output
Review the generated output and use it in a suitable development or testing environment. Always verify the generated SQL and data before executing it against a database.


Why Use Mock Data for SQL Testing?

Mock data allows developers and testers to work with sample records without depending entirely on production database information. It can help you test SQL queries, check database structures, practice insert operations, and identify issues before deploying application changes.

Using generated sample data can also reduce manual data-entry work. However, mock data may not represent every real-world situation, so important database tests should include suitable edge cases and validation checks.


Who Can Use This Tool?

  • Software Developers: Create sample records while building database-driven applications.
  • Software Testers: Prepare test data for database and application testing.
  • SQL Beginners: Practice database concepts with sample data.
  • Database Administrators: Prepare sample datasets for suitable development tasks.
  • Students: Learn how database columns and sample records work.

Frequently Asked Questions (FAQs)

1. What is a SQL Mock Data Generator?

A SQL Mock Data Generator is a tool that creates sample data for database development, SQL practice, and software testing. It helps users prepare example records without manually entering every value.

2. Is this SQL Mock Data Generator free?

Yes, you can use this online tool to generate sample SQL data for supported use cases without manually creating each record.

3. Can I customize column names?

Yes, you can enter column names and configure the available data generators to prepare mock data for your requirements.

4. Can I use generated data for database testing?

Yes, generated sample data can help with development and testing. Review the output and confirm that it matches your database schema and requirements before executing it.

5. Is mock data the same as real customer data?

No. Mock data is sample data created for development, testing, or demonstration. It should not be treated as verified real-world customer information.

6. Should I execute generated SQL directly on a production database?

Not without reviewing it first. Check the SQL statements, column definitions, constraints, and target database before execution. Use a development or test database whenever possible.


Related Developer Tools

Explore these useful tools for SQL development, testing, and automation:

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Tuesday, October 27, 2026

Free Body Fat Calculator - Calculate Body Fat Percentage Online

Body Fat Calculator

Enter your measurements to estimate your body fat percentage and body composition.

Estimated Body Fat Percentage
--%
Category

This is an estimate based on the US Navy circumference method, not a medical diagnosis.

Body Composition Chart

--% Body fat
Fat mass
--
Lean body mass
--

The chart divides your estimated body weight into fat mass and lean body mass.

Fat Mass
--
kg of body fat
Lean Body Mass
--
kg of lean mass
Total Weight
--
kg total weight

Body Fat Category Guide

General reference ranges for adults. These ranges are not a diagnosis and may vary by age and other factors.

Category Men Women
Essential fat 2-5% 10-13%
Athletes 6-13% 14-20%
Fitness 14-17% 21-24%
Average 18-24% 25-31%
Higher body fat 25% and above 32% and above

The category shown in your result is a broad estimate. Body fat ranges are not identical for every age group, and different reference systems may use different cut-offs.

Measurement Guide

Neck Waist Hip (women) Keep the tape level and snug, without compressing the skin.

How to measure correctly

  • Neck: Measure around the neck, keeping the tape level and comfortable.
  • Waist: Measure around the abdomen according to a consistent waist-measurement position. Keep your stomach relaxed.
  • Hip: For women, measure around the widest part of the hips and buttocks.
  • Keep the tape horizontal and snug, but do not pull it tightly into your skin.
  • Use the same measurement units throughout the form and remeasure if a value seems incorrect.

Free Body Fat Calculator

Use our Free Body Fat Calculator to estimate your body fat percentage, fat mass, and lean body mass online. This calculator uses the US Navy body circumference method to provide an estimate based on your gender, age, height, weight, waist, and neck measurements. Female users also need to enter their hip measurement. You can choose Metric or Imperial units to calculate your results conveniently.


How to Use the Body Fat Calculator

Follow these simple steps to estimate your body fat percentage:

Step 1: Select your gender (Male or Female).

Step 2: Enter your age. This calculator is intended for adults aged 18 and above.

Step 3: Select your preferred measurement system: Metric or Imperial.

Step 4: Enter your height and current body weight using the selected units.

Step 5: Measure and enter your waist and neck circumferences. Female users should also enter their hip circumference.

Step 6: Click the Calculate Body Fat button to view your estimated body fat percentage, body composition chart, fat mass, lean body mass, and body fat category guide.


What Is Body Fat Percentage?

Body fat percentage is the proportion of your total body weight that consists of fat. For example, if someone weighs 80 kg and has an estimated body fat percentage of 20%, approximately 16 kg of their body weight is fat.

Body fat plays important roles in energy storage, hormone function, insulation, and protecting internal organs. Both excessively low and high body fat levels may be associated with health concerns, so results should be interpreted in the context of overall health, age, and activity level.


Understanding Your Body Fat Calculator Results

Body Fat Percentage: Shows the estimated percentage of your total body weight that consists of fat.

Body Composition Chart: Provides a visual breakdown of estimated fat mass and lean body mass.

Fat Mass: Estimates the weight of fat in your body based on your total weight and calculated body fat percentage.

Lean Body Mass: Estimates the weight of everything other than body fat, including muscle, bones, organs, and body water.

Total Weight: Displays your entered body weight in the selected measurement unit.

Body Fat Category Guide: Shows general reference ranges for men and women. These ranges are approximate and should not be treated as a medical diagnosis.


How Is Body Fat Percentage Calculated?

This tool uses the US Navy body fat estimation method, which calculates an estimate from body circumference measurements and height. The formula differs for men and women.

For Men:

Body Fat % = 86.010 × log10(Waist − Neck) − 70.041 × log10(Height) + 36.76

For Women:

Body Fat % = 163.205 × log10(Waist + Hip − Neck) − 97.684 × log10(Height) − 78.387

The original formulas use measurements in inches. The calculator converts Metric measurements when necessary before calculating the estimate.

After calculating body fat percentage, the tool estimates fat mass by multiplying total body weight by the body fat percentage. Lean body mass is calculated by subtracting estimated fat mass from total body weight.


Important Notes About Body Fat Estimates

Body fat calculator results are estimates and may differ from measurements obtained through professional methods such as DEXA scans or other body composition assessments. Accuracy depends on the quality and consistency of your measurements.

Use a measuring tape correctly, keep it level, and avoid pulling it tightly against your skin. For meaningful comparisons over time, measure under similar conditions and use the same measurement technique.

This calculator is intended for adults aged 18 and above. It is an educational tool and does not replace medical advice or a professional health assessment.


Frequently Asked Questions (FAQs)


1. Is this Body Fat Calculator free to use?

Yes, this Body Fat Calculator is free to use online. Enter your measurements to estimate body fat percentage, fat mass, and lean body mass without needing a paid subscription.


2. How accurate is the US Navy body fat method?

The US Navy method provides an estimate based on body circumference measurements. Its accuracy can vary depending on body shape, measurement technique, and individual characteristics. It is not as direct as some professional body composition assessment methods.


3. What is a healthy body fat percentage?

There is no single ideal body fat percentage for everyone. General reference ranges differ between men and women and can vary with age, fitness, and health circumstances. Use the calculator's category guide as a broad reference rather than a diagnosis.


4. What is the difference between fat mass and lean body mass?

Fat mass is the estimated weight of fat in your body. Lean body mass includes the rest of your body weight, such as muscle, bones, organs, and water. Together, these estimates add up to your total body weight.


5. Why does the calculator ask for waist and neck measurements?

The US Navy method uses body circumference measurements to estimate body fat percentage. It uses waist, neck, and height measurements for men, and waist, neck, hip, and height measurements for women.


6. Can I use this calculator with Metric and Imperial units?

Yes, the calculator supports Metric and Imperial units. Select your preferred system and enter the measurements using the units displayed beside each input field.


7. Can this calculator diagnose obesity or other health conditions?

No. This calculator provides an estimate of body fat percentage and does not diagnose obesity or any medical condition. Consult a qualified healthcare professional for an assessment of your health and individual risk factors.


Related Health Tools

Explore these useful tools on Java Tutorial 95:

Note: Body fat estimates are for informational purposes only and should not be used as a substitute for professional medical advice.

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