PNG to JPEG XL — Maximum Compression for Lossless Images
Convert PNG to JPEG XL. A next-gen format that achieves much smaller lossless files than PNG.
Drop PNG files here or click to select
.png (multiple files)
Settings
Files
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Format comparison
PNG (Portable Network Graphics) uses lossless compression and supports transparency. Ideal for logos and screenshots.
Pros
- ✓ Lossless compression
- ✓ Alpha transparency
- ✓ Great for sharp edges
Cons
- ✗ Larger file sizes
- ✗ Inefficient for photos
JPEG XL is a newer image format designed to support both lossless and lossy compression modes. Support can vary by browser and toolchain.
Pros
- ✓ Supports both lossless and lossy modes
- ✓ Designed for high compression efficiency across content types
- ✓ Suitable for archiving with metadata when supported
Cons
- ✗ Limited browser support
- ✗ Developing tool ecosystem
When to Convert PNG to JPEG XL
Convert PNG to JPEG XL when you want to test or archive in a next-gen format. Support is limited, so keep fallbacks in mind.
Technical Format Details
PNG Technical Specifications
Technical details
PNG is a lossless raster format that preserves pixel data exactly. It supports alpha transparency, which makes it a common choice for logos and UI assets.
Good for
- Logos/icons: Assets that need transparency- Screenshots: Crisp text and line art
Notes
- Photos: Files can be large (WebP/JPEG may be a better fit)- Quality setting: Since PNG is lossless, “quality” controls may have little or no effect
Reference: W3C: PNG 3rd Edition
JPEG XL Technical Specifications
Technical details
JPEG XL is designed to support both lossless and lossy compression. It can be attractive for experiments and archiving, but real-world support still varies by browser and app.
Good for
- Testing/archiving: Trying a next-gen format where supported- Fallback conversions: Converting back to PNG/JPEG for compatibility
Notes
- Compatibility: Confirm the recipient platform supports JXL- Publishing: WebP/JPEG/PNG is often the safer default for the web
Reference: JPEG XL (JPEG Committee)
How to Use
Add files
Drop or click to select your PNG files (multiple supported)
Confirm output
Default is JPEG XL. You can change to another supported output format if needed.
Adjust options
Set quality, resize, and metadata options only if you need them.
Convert & download
Download each file, or download everything as a ZIP for batch outputs.
FAQ
Is JPEG XL lossless compression better than PNG?
Yes. JPEG XL lossless mode can produce files about 35% smaller than PNG.
What about browser support?
Safari supports it, but Chrome and Firefox dropped support. Use caution when publishing for the web.
Is it good for archiving?
Yes. Lossless with high compression makes it ideal for archiving large image collections — saving significant storage.
Will converting reduce image quality?
It depends on the output format. PNG is lossless, so quality stays the same. Lossy formats like JPEG/WebP/AVIF/JXL can change file size and appearance depending on the quality setting. Always verify with the final output before publishing.
Can I keep Exif metadata?
When "Keep Exif/Metadata" is ON, we try to carry over things like capture time, camera info, and GPS where possible. Some tags may be dropped depending on the input, output format, and browser environment. Turn it OFF if you want to remove location data before sharing.
Can I convert multiple files at once?
Yes. You can select multiple files, convert them in one run, and download each file individually. For multiple outputs, you can also download everything as a ZIP. For very large batches, splitting into smaller runs is more stable.
Are my images uploaded to a server?
No. Conversion runs locally in your browser, and your images are not sent to an external server.
Why do colors sometimes shift after conversion?
Differences in decoding/encoding and color handling can cause small shifts. For critical images, compare the output against the original.
References
- W3C: PNG 3rd Edition
Official PNG/APNG specification reference.
- AOM: AVIF Specification
Normative AVIF container and coding behavior.
- JPEG Committee
Primary standards source for JPEG and JPEG XL.
- Google Developers: WebP
Reference for WebP encoding and support behavior.
More Tools
EXIF Remover (GPS & Date Taken)
Remove photo metadata like GPS and date taken before sharing. (HEIC/JXL supported)
Image Converter & Compressor (HEIC/WebP/AVIF/JXL)
Convert to JPEG/PNG/WebP/AVIF/JXL with quality control, plus format-specific pages for common pairs.
Character Counter (Lines & Bytes)
Count characters, lines, and bytes in real time — great for posts and drafts.
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