ImageHub
Image Converter - JPG, PNG & WebP
Convert images between JPG, PNG and WebP quickly and securely. Use ImageHub's online converter to change file formats for web publishing, compatibility, or smaller file sizes without installing software.
- Step 1: Upload one or more images (JPG, PNG, WebP or common formats).
- Step 2: Choose the output format (e.g., JPG → PNG or PNG → WebP) and optional quality settings.
- Step 3: Click Convert and download your converted files instantly.
- Free and no signup required — convert images instantly in your browser.
- Batch conversion support for faster workflows and multiple files.
- Preserve image quality with adjustable compression/quality controls.
- Works on desktop and mobile — no software to install.
Drop your image here or click to browse
Supports JPG, PNG, and WebP formats
Instant Conversion
Convert images in seconds with our optimized processing
Privacy First
Images are processed locally and never stored on our servers
All Devices
Works perfectly on desktop, tablet, and mobile devices
What is an Image Format Converter?
An image format converter transforms images from one file format to another while preserving visual content. ImageHub's converter supports the three most important web formats: JPG (JPEG), PNG, and WebP. Each format serves different purposes—JPG for photographs, PNG for graphics with transparency, and WebP for modern web applications requiring superior compression.
Format conversion is essential when preparing images for different platforms, ensuring compatibility with older software, optimizing web performance, or meeting specific file format requirements for applications and services.
Why Convert Image Formats?
Different image formats excel in different scenarios. Converting allows you to optimize images for specific use cases while maintaining quality and compatibility.
Platform Compatibility
Some platforms or applications only accept specific formats. Converting ensures your images work everywhere you need them, from older email clients to modern web applications.
File Size Optimization
Converting to WebP can reduce file sizes by 25-35% compared to JPG without visible quality loss. This dramatically improves website loading speeds and reduces bandwidth costs.
Transparency Requirements
If you need transparent backgrounds for logos or graphics, you must convert to PNG or WebP. JPG doesn't support transparency, replacing it with a solid background color.
Quality Preservation
Converting from lossy JPG to lossless PNG prevents further quality degradation when making subsequent edits. Always work from the highest quality source available.
Supported Format Conversions
JPG to PNG Conversion
Converting JPG to PNG transforms compressed photographic images into lossless format. This is useful when you need to add transparency, make further edits without quality loss, or ensure perfect pixel accuracy.
Note: JPG to PNG conversion cannot restore quality already lost during JPG compression. The resulting PNG will be larger but not higher quality than the JPG source. Convert from original uncompressed files when possible.
PNG to JPG Conversion
Converting PNG to JPG applies lossy compression to reduce file size significantly. This is ideal for photographs or images where transparency isn't needed and smaller file size improves performance.
Important: Transparency is removed during PNG to JPG conversion, replaced with a solid background (typically white). For graphics requiring transparency, use WebP instead or keep the PNG format.
JPG/PNG to WebP Conversion
Converting to WebP offers the best compression efficiency for modern web applications. WebP files are 25-35% smaller than JPG at equivalent quality and support transparency like PNG with much better compression.
WebP is supported by over 95% of browsers as of 2024, making it the optimal choice for new websites and applications. Provide fallback formats for legacy browser support if needed.
WebP to JPG/PNG Conversion
Converting WebP to JPG or PNG ensures compatibility with older software, email clients, or systems that don't support WebP. Choose JPG for photos without transparency, PNG for graphics with transparency.
While this sacrifices WebP's compression efficiency, it ensures universal compatibility across all platforms and applications, including older operating systems and image editing tools.
How to Convert Images with ImageHub
Upload Your Image
Click "Choose File" or drag and drop your image into the upload area. ImageHub accepts JPG, PNG, WebP, and most common image formats up to 50MB.
Select Output Format
Choose your target format: JPG for photos, PNG for graphics with transparency, or WebP for optimal web performance. Quality settings allow fine-tuning compression levels.
Convert and Download
Click "Convert" to process your image. Conversion typically completes in seconds. Download the converted file immediately and use it in your projects.
Image Conversion Best Practices
- Always keep original files: Store uncompressed or highest-quality versions separately. Convert from originals rather than re-converting already compressed images.
- Consider final use case: Web images benefit from WebP or optimized JPG. Print materials need high-quality PNG or lossless formats. Match format to purpose.
- Combine with resizing: Resize images to appropriate dimensions before or after conversion. Oversized images waste bandwidth even when compressed. Use our resize tool for dimension optimization.
- Test quality settings: When converting to lossy formats, preview results at different quality levels. Find the optimal balance between file size and visual quality.
- Batch convert similar images: Use consistent settings for related images to maintain uniform quality across projects, websites, or galleries.
Image Converter FAQs
Does conversion reduce image quality?
Quality loss depends on formats involved. Converting between lossless formats (PNG to PNG) or from lossy to lossless (JPG to PNG) preserves quality. Converting from lossless to lossy (PNG to JPG) or between lossy formats introduces compression that may reduce quality, though this is usually imperceptible at reasonable quality settings (75-85).
Can I convert images without uploading to servers?
ImageHub uses secure server-side processing for reliable conversion across all formats. Your images are processed immediately and deleted after conversion, ensuring privacy. Files never remain on servers or are used for any purpose beyond your requested conversion.
What's the maximum file size I can convert?
ImageHub supports images up to 50MB. Most photos and graphics fall well below this limit. For very large files (gigapixel images, high-resolution scans), consider resizing before conversion or using dedicated desktop software.
Should I convert JPG to PNG before editing?
If you plan extensive editing, converting JPG to PNG first prevents additional quality loss from repeated saves. However, this doesn't restore quality already lost in the original JPG. Ideally, edit from original camera RAW or uncompressed files when available.
Why is my PNG larger than the original JPG?
PNG uses lossless compression, which preserves every pixel perfectly but creates larger files than lossy JPG compression. This is expected behavior. PNG is appropriate when quality and transparency matter more than file size. For photographs without transparency needs, JPG or WebP provides better size efficiency.
Can I convert multiple images at once?
Currently, ImageHub converter processes one image at a time for optimal speed and quality control. For batch conversion needs, convert images individually or consider desktop tools designed for batch processing if you regularly convert large quantities of images.
What happens to transparency when converting PNG to JPG?
JPG doesn't support transparency, so transparent areas are replaced with a solid background color (typically white). If transparency is important, use PNG or WebP format instead. WebP supports transparency with much better compression than PNG.
Is WebP compatible with all browsers and devices?
As of 2024, WebP is supported by over 95% of browsers including Chrome, Firefox, Edge, Safari, and mobile browsers. Only very old browsers (Internet Explorer, pre-2020 Safari) lack support. For modern websites, WebP is safe to use. Provide JPG/PNG fallbacks for legacy browser support if needed.