Convert to JPG with smart quality-size balance, real-time preview, batch processing
All image processing is done locally in your browser via WebAssembly, ensuring privacy. Conversion supports custom quality, smart compression, batch processing, real-time before/after comparison, and one-click download to optimize image loading and transfer efficiency.
Why convert to JPG?
HEIC often cannot be previewed on non-Apple devices, and PNG/BMP files are too large for fast loading. Converting to JPG provides excellent cross-platform compatibility, displaying reliably on most websites, apps, and email clients, while significantly reducing file size compared to PNG/BMP for faster uploads and easier sharing.
What is JPG?
JPG (or JPEG) is the most widely used lossy image compression format, standardized by the Joint Photographic Experts Group in 1992. It is natively supported by virtually all devices and platforms.
Why compress JPG?
Oversized images slow page loading and consume storage and data. Proper compression improves load speeds, boosts SEO, and meets platform upload limits for smoother sharing and usage.
How does JPG compression work?
JPG uses lossy compression, permanently removing some image data for smaller files. It converts colors into luminance and chrominance, splits the image into 8x8 pixel blocks, uses mathematical transforms to identify less important visual information, and discards data based on the chosen quality setting. MozJPEG uses smarter algorithms to optimize traditional JPG encoding, improving compression efficiency by 5-15% at the same visual quality.
Choose Quality Level?
Use Case Quality Level Compression Ratio Notes Archiving, professional photography 90-100 20-40% Preserves detail, skin tones, and lighting; ideal for print and original backups Web images, social media, email 75-89 50-70% Visually lossless, optimal for web loading Thumbnails, previews 60-74 70-85% Small display size, trades detail for speed Extreme compression, low-bandwidth, batch storage Below 60 85%+ Works for large images; visible artifacts on small images Privacy & Security?
No registration required. All processing is done locally in your browser via WebAssembly. Images are never uploaded to the cloud, collected, or stored. Your privacy is fully protected.
How to Use?
1Adjust QualityAuto by default, or set a custom quality value2Add FilesSelect, select all, or drag and drop to convert/compress3DoneClick thumbnails to compare before/after4SaveSave individual images or download all