MB to kB Image Compressor – Reduce Photo & PDF Size (Free)

MB to kB Image Compressor

Resize your image size from MB to kB. Supports JPG, PNG, and WebP & Compress PDF

If you’re struggling to upload a photo or PDF because the file size is too big, you’re not alone. Many platforms ask for documents or images to be in KB, not MB. That’s why we created MBtoKBConverter.org a free and fast MB to KB file converter that works right inside your browser. Whether you want to compress an image to 200KB, resize a 300KB photo, or convert PDF from MB to KB, our tool is perfect for all these tasks and your data never leaves your device.

100% Free 100% Secure No Upload Required
1

Upload Your Image

Drag & drop your image here

or

Supports JPG, JPEG, PNG, WEBP

2

Choose Output Size

Desired Output Format

Image Quality

Lower
(Smaller File)
85%
Higher
(Better Quality)

Select Target File Size

Choose one of our preset sizes:

Or Enter Custom Target Size

KB
1

Upload Your PDF

Drag & drop your PDF here

or

Only PDF files are supported

2

Choose Output Size

PDF Compression Level

Maximum
Compression
1 2 3 4 5
Medium (3)
Highest
Quality

Select Target File Size

Choose one of our preset sizes:

Or Enter Custom Target Size

KB

Related Tools & Utilities

Discover our comprehensive suite of file processing tools designed to help you manage, edit, and optimize your digital content with ease.

Image Editing & Processing Tools

Professional image editing and optimization tools for all your visual content needs

Image Resizer

Resize images by pixels, percentage, or specific dimensions while maintaining aspect ratio

Free Tool

Image Cropper

Crop images to specific sizes, ratios, or custom shapes with precision editing tools

Online Editor

Image Rotator

Rotate and flip images in any direction with automatic orientation correction

Quick Fix

Background Remover

Remove backgrounds from images automatically using AI-powered technology

AI Powered

Image Filters

Apply professional filters, effects, and adjustments to enhance your photos

Photo Enhancement

Color Picker

Extract color palettes and pick specific colors from any image or photo

Design Tool

PDF Management Tools

Complete PDF toolkit for merging, splitting, converting, and editing PDF documents

PDF Merger

Combine multiple PDF files into a single document with custom page ordering

Batch Processing

PDF Splitter

Split large PDF files into smaller documents or extract specific pages

Page Extraction

PDF Password Protector

Add password protection and security settings to your PDF documents

Security

PDF Password Remover

Remove password protection from PDFs when you have the original password

Unlock Tool

PDF Signature Tool

Add digital signatures and annotations to your PDF documents online

E-Signature

PDF Editor

Edit text, images, and pages in PDF files with a comprehensive editing suite

Full Editor

File Conversion & Format Tools

Convert between different file formats quickly and easily with high-quality output

Image Format Converter

Convert between JPG, PNG, WebP, GIF, BMP, and other image formats

Multi-Format

PDF to Image

Convert PDF pages to high-quality JPG, PNG, or other image formats

PDF Export

Image to PDF

Convert single or multiple images into a professional PDF document

PDF Creation

PDF to Word

Convert PDF documents to editable Word files while preserving formatting

Document Conversion

PDF to Excel

Extract tables and data from PDF files and convert them to Excel spreadsheets

Data Extraction

PDF to PowerPoint

Convert PDF presentations back to editable PowerPoint format

Presentation Tool

File Optimization & Analysis Tools

Advanced tools for analyzing, optimizing, and managing your digital files

Batch Image Compressor

Compress multiple images at once with custom quality and size settings

Bulk Processing

Image Metadata Viewer

View and edit EXIF data, camera settings, and other metadata in images

EXIF Reader

File Size Analyzer

Analyze file sizes and get recommendations for optimal compression settings

Analysis Tool

Image Format Optimizer

Automatically choose the best image format for optimal file size and quality

Smart Optimization

Compression Statistics

Track compression ratios and file size savings across multiple files

Analytics

Batch File Renamer

Rename multiple files with custom patterns, numbering, and metadata

File Management

Need a Specific Tool?

Can’t find the tool you’re looking for? Let us know what you need and we’ll consider adding it to our toolkit.

100% Secure – No Upload Required

Unlike many websites that upload your file to the cloud, MBtoKBConverter does everything locally in your browser.

No Cloud Storage

Your files never leave your device. All processing happens locally in your browser.

No File Tracking

We don’t track or store your files in any way. Your privacy is completely protected.

No Risk of Data Leaks

Since we don’t store anything on servers, there’s zero risk of your data being compromised.

What You Can Do on MBtoKBConverter.org

Compress PDF Files

Shrink PDFs to exact sizes needed for uploads:

  • Compress PDF to 50KB
  • Compress PDF to 150KB
  • Compress PDF to 250KB
  • Compress PDF to 350KB

Reduce Photo Size

Convert images from MB to KB with precision:

  • Compress image to 20KB, 50KB
  • Compress image to 100KB, 150KB
  • Compress image to 200KB, 250KB
  • Compress image to 300KB, 350KB

Format Conversion

Convert between different image formats:

  • Convert JPG to PNG or WEBP
  • Convert PNG to JPG
  • Optimize formats for best compression

Exact KB Size Selection

Perfect for specific requirements:

  • Resize photo by selecting exact KB size
  • Job applications with strict limits
  • Government forms with size restrictions
  • Email attachment optimization

How to Use the Tool

1

Upload

Choose whether you’re compressing an image or a PDF, then select your file.

2

Select Size

Choose your desired output file size (e.g., 100 KB, 200 KB) and format options.

3

Download

Process your file and download the compressed version instantly. No watermarks.

No login, no installation, and no watermarks—just fast and free file compression.

Perfect For

Job Applications

College Admissions

Visa Applications

Government Forms

Email Attachments

Online Forms

ID Submissions

Frequently Asked Questions

What file types are supported?

JPG, PNG, WEBP, and PDF files are currently supported.

Is the compression tool safe to use?

Yes. All compression happens in your browser. Your file never leaves your device.

Can I compress an image on mobile?

Yes. The tool is mobile-friendly and works in any browser, including Chrome, Safari, and Firefox.

Can I resize images by width and height?

Yes, the photo resize feature lets you adjust dimensions and reduce image size in KB.

Can I convert an image to a specific KB size?

Absolutely. You can select from preset sizes like 50KB, 100KB, 250KB, and more.

Why Choose MBtoKBConverter.org?

  • 100% free and secure with no sign-up or installation required
  • Instant file compression in your browser with no server uploads
  • PDF and image compression tools available in one platform
  • Works on all devices: mobile, tablet, and desktop
  • Advanced compression technology that maintains quality while reducing file size

Final Words

MBtoKBConverter.org is your go-to solution for all file compression needs. Whether you’re preparing documents for job applications, college admissions, or government forms, our tool helps you meet strict size requirements quickly and easily.

Remember, our tool is completely free, secure, and works entirely in your browser. Your files never leave your device, ensuring maximum privacy and security. No watermarks, no registration, and no limits on usage.

We’re constantly improving our tool to provide better compression results while maintaining quality. If you have any feedback or feature requests, please don’t hesitate to contact us.