Kitzora

Free online QR code generator, age & BMI calculator, image compressor and PDF tools

Free QR Code Generator

About this free tool

Turn any link, text, Wi-Fi note or phone number into a scannable QR code in seconds. Choose your own foreground and background colors, set the size and download a high-quality PNG for print or screens.

How to use it

  1. Type or paste your URL or text into the box.
  2. Pick the foreground and background colors and the size.
  3. Check the live preview, then press Download PNG.

Frequently asked questions

Is this QR code generator really free?

Yes. It is free, needs no account and adds no watermark to your QR code.

Will my QR code expire?

No. The QR code simply stores the text or link you typed, so it keeps working as long as that link works.

Which colors scan best?

Use a dark foreground on a light background with strong contrast. Very light or low-contrast colors may not scan on every phone.

Is my data uploaded?

No. The QR code is generated inside your browser, so your text never leaves your device.

More free tools: Age & BMI · Compressor · PDF Tools

Age Calculator & BMI Calculator

Age calculator

Pick your date of birth to see your exact age.

BMI calculator

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About this free tool

Find your exact age from your date of birth in years, months, days and hours, and calculate your Body Mass Index using metric or imperial units with a clear color-coded result.

How to use it

  1. Choose your date of birth to see your exact age.
  2. Set your height and weight with the sliders, in cm/kg or ft/lbs.
  3. Read your BMI value and category: Underweight, Normal, Overweight or Obese.

Frequently asked questions

How is BMI calculated?

BMI is weight in kilograms divided by height in meters squared. In imperial units it is 703 times weight in pounds divided by height in inches squared.

What is a normal BMI range?

For most adults a BMI from 18.5 to 24.9 is considered the normal range.

Is BMI a medical diagnosis?

No. BMI is a general screening number and does not measure body fat or muscle. Talk to a doctor for personal health advice.

Is my date of birth stored?

No. All calculations run in your browser and nothing is sent anywhere.

More free tools: QR Code · Compressor · PDF Tools

Image Compressor & Resizer

Original
Compressed
Saved
Compressed preview

About this free tool

Shrink photos for websites, email and social media without uploading them anywhere. Drag in an image, pick the quality, optionally set a maximum width and download the smaller file.

How to use it

  1. Drop your image into the upload area.
  2. Move the quality slider and optionally enter a maximum width.
  3. Compare the sizes, then download the compressed image.

Frequently asked questions

Are my images uploaded to a server?

No. Compression happens on your device in the browser, so your photos stay private.

What format is the result?

The compressed file is saved as JPEG. Transparent areas of a PNG become white.

What quality should I choose?

Around 60 to 80 percent usually gives a big size reduction with little visible loss.

Can I resize as well?

Yes. Enter a maximum width and the image is scaled down while keeping its proportions.

More free tools: QR Code · Age & BMI · PDF Tools

PDF Tools: Merge, Compress & Images to PDF

    About this free tool

    Combine several PDFs into one, optimize a PDF file, or turn photos and scans into a single PDF. Your files are processed inside your browser and are never uploaded.

    How to use it

    1. Pick Merge PDF, Compress PDF or Images to PDF.
    2. Add your files, remove or reorder them in the list.
    3. Press the action button and your new PDF downloads automatically.

    Frequently asked questions

    Are my PDF files uploaded?

    No. All processing runs locally in your browser.

    How much does Compress PDF save?

    It rewrites the PDF structure, so savings are small for files that are mostly large images. Text-heavy PDFs benefit most.

    Can I turn JPG or PNG files into a PDF?

    Yes. Use Images to PDF; each image becomes one page in the order you list them.

    Can it open password-protected PDFs?

    Encrypted PDFs may fail to process. Remove the password first with the original app.

    More free tools: QR Code · Age & BMI · Compressor