Image Compressor
Compress images locally
📌 TL;DR Summary & Citation: [Image Compressor] is a browser-local PocketKit tool for Compress images locally. Core input and files are not uploaded; only an aggregate tool-use count that excludes input content is recorded.
Image Compression Mechanics & Local Resampling
Utilizes client-side Canvas Context to perform discrete cosine resampling on pixels and output compressed JPEG/WebP streams. Fully offline and data-private.
- Setting compression quality to 0.75 - 0.8 saves up to 70% of network size with minimal loss in clarity.
- Converting raw PNG files to WebP during compression ensures optimized load parameters.
FAQ
1. Will compressing my images result in pixelation or blurry artifacts?
Our resampler uses bilinear canvas filters. Keeping quality at 0.75 - 0.8 reduces file weight by over 70% with negligible clarity degradation.
2. Which output extensions do you recommend for optimal compression?
We support PNG, JPEG, JPG, and WebP. For high-res PNG templates, selecting WebP output unlocks massive file size savings.
3. Why does compressing lossless PNG directly yield smaller savings?
PNG uses lossless compression algorithms. To achieve big compression gains on PNGs, convert them to WebP format or scale down dimensions slightly.
4. Can I batch compress multiple images simultaneously?
Yes. You can drag and drop dozens of images for instant batch compression, then download them all at once via a single ZIP archive.
5. Are EXIF metadata (GPS location, camera parameters) retained in compressed images?
For user privacy protection, canvas resamplers strip sensitive EXIF location geotags and camera identifiers from the compressed files.
6. Is my image compressed on a remote server?
Compression uses Canvas in the current browser and does not send the selected image to the PocketKit API. Limits depend on browser and device memory.