JPG to PNG & PNG to JPG Converter

Convert between JPG and PNG formats instantly with our free online tool. Preserve image quality, handle transparency, batch convert multiple images, and learn which format suits your needs best for web, print, and social media.

Convert PNG to JPG/JPEG

🎨

Drop PNG files here or click to browse

Supports PNG files • Max 10MB per file • Batch convert up to 20 images

⚠️ Transparency Warning

JPG doesn't support transparency. Transparent areas in your PNG will be converted to white background. If you need transparency, keep your image as PNG or consider using WebP format instead.

Convert JPG/JPEG to PNG

📸

Drop JPG files here or click to browse

Supports JPG, JPEG files • Max 10MB per file • Batch convert up to 20 images

💡 Why Convert JPG to PNG?

PNG supports transparency and lossless compression, perfect for logos, graphics, and images that need editing. Use PNG when you need transparency or plan to edit the image multiple times without quality loss.

🖼️ Format Quick Guide

Use PNG: Logos, graphics with transparency, text-heavy images, icons
Use JPG: Photos, complex images, social media posts, email attachments
File Size: JPG typically 50-80% smaller than PNG for photos

Understanding JPG vs PNG: When to Use Each Format

Choosing the right image format can dramatically impact your website's loading speed, image quality, and storage costs. While both JPG and PNG are universally supported, they serve different purposes. Understanding their strengths helps you make informed decisions for your projects.

📸 JPG (JPEG) Format

Best For:

  • Photographs and complex images with gradients
  • Social media posts (Instagram, Facebook, Twitter)
  • Email attachments and messaging apps
  • Website hero images and backgrounds
  • Digital cameras and smartphone photos

Advantages:

  • Small file sizes (50-80% smaller than PNG for photos)
  • Adjustable quality/compression balance
  • Universal browser and device support
  • Faster webpage loading times
  • Ideal for millions of colors

Limitations:

  • No transparency support
  • Lossy compression (quality degrades with each save)
  • Not ideal for text or sharp edges
  • Creates artifacts around text and lines

🎨 PNG Format

Best For:

  • Logos and branding materials
  • Graphics with text or sharp edges
  • Images requiring transparency
  • Screenshots and diagrams
  • Icons and UI elements

Advantages:

  • Transparency support (alpha channel)
  • Lossless compression (perfect quality)
  • Sharp text and edges without artifacts
  • Can be edited repeatedly without quality loss
  • Better for graphics with few colors

Limitations:

  • Larger file sizes for photos (2-5x bigger than JPG)
  • Slower webpage loading for photo-heavy sites
  • Not ideal for photos with complex color gradients
  • Higher storage and bandwidth costs

Practical Use Cases: Real-World Examples

🌐 Website Optimization

Problem: Your website loads slowly because all images are PNGs, even photos.

Solution: Convert photos to JPG (70-80% quality) and keep logos/icons as PNG. A typical product photo that's 2MB as PNG becomes 300KB as JPG with minimal visual difference. This can reduce page load time from 8 seconds to 2 seconds, dramatically improving user experience and SEO rankings.

🎨 Logo Design

Problem: Your logo has a white box around it when placed on colored backgrounds.

Solution: Convert JPG logos to PNG with transparency. This allows the logo to blend seamlessly with any background color. Essential for business cards, website headers, and marketing materials where the logo needs to appear on various colored backgrounds.

📱 Social Media Posts

Problem: Instagram rejects your image for being too large or compresses it poorly.

Solution: Convert PNG photos to JPG before uploading. Social platforms re-compress images anyway, so using JPG gives you control over quality. A 5MB PNG converted to 80% quality JPG becomes 800KB, uploads faster, and looks identical on screen.

📧 Email Marketing

Problem: Your email newsletter takes forever to load and many images don't display.

Solution: Convert all photos to JPG (60-70% quality is fine for email). Keep small logos as PNG. Email clients have strict size limits; smaller images mean faster delivery, better inbox placement, and higher engagement rates.

🖨️ Print Design

Problem: Text in your flyer looks blurry and pixelated when printed.

Solution: Use PNG for text-heavy graphics and logos. JPG's compression creates artifacts around sharp edges that become very visible in print. For photos in the same design, use high-quality JPG (90-95%) to balance file size and quality.

Technical Details: How Conversion Works

JPG to PNG Conversion Process

When converting JPG to PNG, our tool decodes the JPG image (decompressing it back to full pixel data), then re-encodes it as PNG using lossless compression. The result is a larger file that maintains the exact quality of the original JPG.

Important: Converting JPG to PNG doesn't improve quality—it just prevents further quality loss. If the original JPG was compressed at 60% quality, the PNG will have that same 60% quality level, just without compression artifacts getting worse on future edits.

PNG to JPG Conversion Process

Converting PNG to JPG involves decoding the PNG, then applying JPEG compression at your chosen quality level. Our tool defaults to 90% quality, which provides excellent visual quality while significantly reducing file size.

Transparency handling: Since JPG doesn't support transparency, transparent pixels are converted to white. If you need a different background color, you should composite the PNG onto your desired background color before conversion.

Quality vs File Size Trade-off

JPG quality settings range from 1-100%. Here's what to expect:

  • 50-60%: Very small files, noticeable quality loss, suitable only for thumbnails
  • 70-80%: Good balance for web use, minor quality loss invisible on most screens
  • 85-90%: Recommended for most uses, excellent quality with reasonable file size
  • 95-100%: Near-perfect quality but much larger files, diminishing returns

Common Mistakes to Avoid

❌ Common Mistakes

1. Using PNG for All Photos

Many beginners use PNG for everything because it's "lossless." But for photos, this creates unnecessarily large files. A 2MB PNG photo becomes 300KB as JPG with zero visible difference on screen.

2. Converting JPG → PNG → JPG Repeatedly

Each JPG save loses quality. Converting to PNG doesn't restore lost quality—it just prevents further loss. If you need to edit frequently, save your working file as PNG and only export to JPG for final use.

3. Using 100% Quality JPG for Web

Quality above 90% gives minimal visual improvement but dramatically increases file size. For web use, 80-85% quality is virtually indistinguishable from 100% but loads 3x faster.

4. Ignoring Transparency Needs

Converting a logo PNG to JPG adds an unwanted white background. Always check if your image needs transparency before converting to JPG. If unsure, keep it as PNG.

5. Not Optimizing Before Upload

Uploading 5MB images to your website kills loading speed. Convert photos to JPG and compress them before upload. Modern web best practice is keeping images under 200KB each.

✅ Best Practices

1. Choose Format Based on Content Type

Quick rule: photos = JPG, graphics/logos/text = PNG. This simple decision can reduce your website bandwidth by 60-80% while maintaining quality where it matters.

2. Save Master Files in High Quality

Keep original photos as high-quality JPG (95%) or PNG. Create optimized copies for web use at 80-85% JPG. This way you always have high-quality versions for print or future use.

3. Test Quality Settings

For critical images, try 70%, 80%, and 90% quality side-by-side. Often 80% looks identical to 90% but is 30-40% smaller. Finding your "sweet spot" saves bandwidth without sacrificing quality.

4. Use PNG for Editing Workflows

If you'll edit an image multiple times, work in PNG to avoid cumulative quality loss. Only convert to JPG for the final export. This is especially important for thumbnails, banners, and graphics you update regularly.

5. Consider Modern Formats

For web use, WebP offers better compression than both JPG and PNG while supporting transparency. However, for maximum compatibility (email, older devices), stick with JPG/PNG.

Format Comparison Chart

Feature JPG/JPEG PNG
Compression Type Lossy (discards data) Lossless (preserves all data)
Transparency Support ❌ No ✅ Yes (alpha channel)
Best For Photographs, complex images Logos, text, graphics, icons
File Size (Photo) Small (300KB typical) Large (2MB typical)
File Size (Logo) Medium (150KB typical) Small (50KB typical)
Quality Loss on Re-save Yes (cumulative degradation) No (perfect preservation)
Color Support 16.7 million (24-bit) 16.7 million + transparency
Browser Support 100% (universal) 100% (universal)
Loading Speed Fast (smaller files) Slower (larger files)
Print Quality Good at high quality settings Excellent (no artifacts)

📖 How to Use This Converter

Converting JPG to PNG:

  1. Click the "JPG to PNG" tab
  2. Click "Choose Files" or drag and drop your JPG images
  3. Preview your images (you can remove any by clicking the × button)
  4. Click "Convert to PNG" to process all images
  5. Download individual images or click "Download All as ZIP" for batch download

Note: Converting to PNG creates larger files but enables transparency support and lossless editing.

Converting PNG to JPG:

  1. Click the "PNG to JPG" tab
  2. Adjust the quality slider (90% recommended for most uses)
  3. Click "Choose Files" or drag and drop your PNG images
  4. Preview your images and remove any unwanted ones
  5. Click "Convert to JPG" to process with your selected quality
  6. Download individual images or get all as a ZIP file

Warning: Transparent areas will be converted to white background. Use 80-90% quality for best balance.

💡 Pro Tips

  • For web use: Convert photos to JPG at 80% quality to optimize loading speed
  • For logos: Keep as PNG to preserve transparency and sharp edges
  • For editing: Work in PNG, then convert to JPG only for final export
  • Batch convert up to 20 images at once to save time

❓ Frequently Asked Questions

Should I convert JPG to PNG or PNG to JPG?

It depends on your use case. Convert JPG to PNG if you need transparency, plan to edit the image multiple times, or need perfect quality preservation. Convert PNG to JPG if the image is a photo, you need smaller file sizes for web/email, or transparency isn't needed. Rule of thumb: photos → JPG, logos/graphics → PNG.

Does converting JPG to PNG improve quality?

No, converting JPG to PNG doesn't restore lost quality from JPG compression. It creates a lossless copy of the existing quality, preventing further degradation if you edit and save multiple times. Think of it as preservation, not improvement. The quality will match the original JPG exactly.

What happens to transparency when converting PNG to JPG?

JPG format doesn't support transparency, so transparent areas are converted to a solid color (typically white). If your PNG has transparency and you need to preserve it, keep it as PNG or consider using WebP format instead. Only convert to JPG if transparency isn't important for your use case.

What quality setting should I use when converting PNG to JPG?

For most uses, 80-90% quality provides excellent results. Use 90-95% for professional photography or print materials. Use 70-80% for web images to optimize loading speed. Use 60-70% for email attachments where speed matters more than perfect quality. Avoid 100% quality—it creates huge files with minimal visual improvement over 90%.

Can I convert multiple images at once?

Yes! Our tool supports batch conversion of up to 20 images at once. Simply select multiple files, convert them all together, and download as a ZIP file. This saves significant time when converting entire photo albums or design projects. Each file is processed individually to maintain quality control.

Is there a file size limit for conversion?

Yes, each image must be under 10MB. This covers most photographs and graphics. For larger files (like high-resolution scans or professional photography), you may need to resize or compress them first. Most smartphone photos and web images are well under this limit.

Do you store my uploaded images?

No. All image conversion happens directly in your browser using JavaScript. Your images never leave your device—they're not uploaded to our servers. This ensures complete privacy and faster processing. Once you close the page or clear your selections, the images are permanently removed from memory.

Why is my PNG file larger than the original JPG?

PNG uses lossless compression while JPG uses lossy compression. When converting JPG to PNG, you're storing the same image data without compression, resulting in a larger file. This is normal and expected. The benefit is no further quality loss if you edit and save multiple times. For photos, JPG is usually more efficient; use PNG only when you need its specific features like transparency.