About Image Compressor
Compress JPEG, PNG, and WebP images online with adjustable quality while keeping original pixel dimensions intact.
Features
- Adjustable lossy and lossless quality slider (1% to 100%)
- Instant before-and-after side-by-side file size and byte comparison
- Automatic percentage savings and byte reduction calculation
- Supports high-resolution JPEG, PNG, and modern WebP formats
- 100% private client-side execution — photos never leave your device
How It Works
- Upload a JPG, PNG, or WebP photo from your computer or phone.
- Adjust the compression quality slider (recommended: 75% to 85% for optimal web delivery).
- Click "Compress Image" to execute fast in-browser canvas re-encoding.
- Compare original vs compressed size and click "Download Image" to save.
FAQs
How does Pixelora compress images without visibly degrading quality?
Pixelora utilizes high-efficiency HTML5 Canvas encoding algorithms that perform intelligent color quantization, high-frequency chroma subsampling, and metadata stripping, keeping essential edge contours sharp while discarding redundant data.
Are my private photos uploaded to a remote server?
No. All compression processing occurs entirely within your local browser memory via JavaScript and Canvas APIs. Your images are never transmitted across the network, ensuring complete privacy.
What image formats can I compress with this tool?
Pixelora natively compresses JPEG (.jpg, .jpeg), PNG (.png), and modern WebP (.webp) image files.
Why did my image file size increase after compression?
If a source JPEG was already heavily compressed at a low quality setting (e.g. 50%), re-encoding it at a higher quality slider position (e.g. 85%) can generate a larger byte footprint without improving visual quality.
How is Image Compressor different from Image Size Reducer?
Image Compressor reduces byte weight primarily by adjusting color quantization and compression density while preserving your exact original pixel dimensions. In contrast, Image Size Reducer downscales physical width and height dimensions.