Image Converter Online
Switch between PNG and JPG in seconds — directly in your browser. No uploads, no accounts, no data ever sent to a server.
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Drag & drop files here
PNG or JPG · Up to 20 files · Max 50 MB each
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Select Files
Output Format
Choose the target format for all files
85%
Smaller fileBalanced ★Best quality
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Lightning Fast
Processed in milliseconds using your browser's native Canvas API — no server round-trip, ever.
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100% Private
Your images never leave your device. Zero uploads. Zero tracking. Zero risk to confidential files.
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Full Resolution
Output at original resolution. Tune JPEG quality from 1–100% for the perfect size-to-quality ratio.
The Smarter Way to Handle Image Formats
Understanding the difference between PNG and JPG isn't just technical trivia — it directly affects your workflow speed, storage costs, website load times, and image quality over time.
image PNG: Choose Quality First
PNG's lossless compression is the right choice when pixel-perfect accuracy matters. Every re-save is identical to the original — no degradation, ever.
- Logos, icons, and brand assets
- Screenshots and UI mockups
- Images with transparent backgrounds
- Graphics with text or sharp edges
- Source files for editing workflows
photo_camera JPG: Choose Size First
JPG's smart lossy compression removes imperceptible data to produce dramatically smaller files — often 80–90% smaller than the same image in PNG.
- Product and portfolio photography
- Blog posts and editorial images
- Social media and email content
- Any image where load speed matters
- High-volume storage at scale
balance The Core Trade-off
A 400 KB photograph saved as JPG can balloon to 3–5 MB as a PNG. For photographs, this trade-off rarely makes sense. For a logo with a transparent background, PNG is non-negotiable. Knowing which tool to reach for — and when — is what separates efficient workflows from frustrating ones.
security Why Browser-Based Matters
Most image converters upload your files to a remote server to process them. That means your photos, screenshots, and confidential documents pass through infrastructure you don't control. Our tool runs exclusively in your browser. The conversion happens on your device — we receive nothing.
Important: Converting JPG → PNG does not recover compressed quality. It freezes the current state and prevents future degradation. Always convert to PNG before editing, and export back to JPG as your final step for sharing or publishing.
How to Convert in 3 Steps
1
Select or drop your images
Click the upload area or drag files directly onto it. You can add up to 20 PNG or JPG files at once, up to 50 MB each. Paste from clipboard also works.
2
Choose your output format & quality
Toggle between PNG and JPG output. If converting to JPG, use the quality slider — 80–85% is the sweet spot for most web use cases.
3
Convert and download
Hit "Convert All Files" — processing is near-instant. Download each file individually or grab everything in one ZIP archive.
| Feature | PNG | JPG / JPEG |
|---|---|---|
| Compression type | Lossless — zero quality loss | Lossy — smaller files |
| Transparency support | ✓ Full alpha channel | ✗ Not supported |
| Typical file size | Larger (3–10×) | Much smaller |
| Re-save quality | Unchanged forever | Degrades with each save |
| Best for | Graphics, logos, editing | Photos, web, email |
| Browser support | Universal | Universal |
Transparency note: When converting PNG → JPG, any transparent pixels are filled with solid white. JPG has no alpha channel. If preserving transparency is essential, keep your file in PNG format.
Frequently Asked Questions
Does converting JPG to PNG actually improve image quality?
No — quality lost during JPG compression cannot be recovered by converting to PNG. What the conversion does is lock in the current quality and prevent any further degradation from future saves. Think of it as moving to a non-destructive format for ongoing editing, not as a quality enhancer.
Are my files actually private? Nothing is uploaded?
Completely private. The entire conversion process runs using your browser's built-in HTML5 Canvas API. Your files are read and processed entirely in local memory — no data packets are sent anywhere. You can verify this yourself by opening your browser's developer tools, going to the Network tab, and watching: there will be zero image-related requests during conversion.
What JPEG quality percentage should I use?
For web images, 75–85% hits the sweet spot — files are dramatically smaller with quality differences that are barely visible. Use 90–95% for professional photography or print preparation. Only go below 70% if aggressively minimising file size is your priority and visible compression artifacts are acceptable.
Why is the PNG so much bigger than my original JPG?
PNG stores every single pixel with lossless accuracy. A 500 KB JPG photo can easily become a 3–5 MB PNG. This is expected — you're trading file size for perfect quality preservation. For photographic content where you don't need to edit it further, JPG is almost always the smarter choice for storage and sharing.
Can I batch-convert multiple images at once?
Yes. Select up to 20 images at once — a mix of PNG and JPG is fine. Click "Convert All Files" and everything processes simultaneously in your browser. Download files individually or use "Download All" to get everything as a ZIP archive in a single click.
Does converting PNG to JPG remove transparency?
Yes. JPG does not support an alpha channel, so all transparent areas are filled with white when converting to JPG. If your image relies on a transparent background — a logo placed over a coloured section, for example — you should keep it as PNG or use WebP which supports both transparency and compression.