Convert JPEG to PNG Online Free
Convert JPEG to PNG for lossless editing, logo transparency extraction, and multi-generational design workflows. PNG freezes your JPEG quality in place — no further degradation on re-save. Free, private, no upload required.
Why Use Konverton for JPEG to PNG Conversion?
Format Conversion
Convert between JPG, PNG, WebP, HEIC, GIF, BMP, TIFF, AVIF, and ICO formats with adjustable quality settings.
Edit & Crop
Crop images with precision, resize to custom dimensions, and enhance with brightness, contrast, and sharpening controls.
100% Private
All conversions happen in your browser. Your files never leave your device.
Batch Processing
Convert multiple images at once with batch processing. Apply the same settings to all files for efficient workflow.
Technical Specifications
JPEG Input:
- Lossy DCT compression (8x8 pixel blocks)
- 16M color depth (24-bit RGB)
- No alpha channel (no transparency)
- Artifacts compound on re-save
PNG Output:
- Lossless DEFLATE compression
- Alpha channel support (transparency)
- Existing JPEG artifacts frozen, not worsened
- Native in Photoshop, GIMP, Figma, Sketch