Image Compressor
ImageCompress PNG, JPEG and WebP images in your browser with an adjustable quality slider, batch processing and before-and-after file size preview.
About Image Compressor
High-resolution images eat bandwidth and storage, slowing down pages and blowing email attachment limits. This tool compresses PNG, JPEG and WebP images locally in your browser: drag in files for batch processing, tune the quality slider to balance size and clarity, and see before/after file sizes at a glance. Images are never uploaded - your privacy stays intact.
How to Use
- Open the Image Compressor tool page
- Enter or paste your data into the input area
- View the real-time results and use the copy button to get the output
Use Cases
- Optimize web images — Compress banners and product photos to shrink page weight and speed up loading.
- Slim email attachments — Compress photos below email attachment size limits to avoid send failures.
- Save cloud storage — Batch-compress images before uploading to cloud drives to save space and sync traffic.
- Social media fit — Compress images within the size limits of WeChat, Twitter and other platforms for quick sharing.
- E-commerce optimization — Compress product hero images while keeping clarity, balancing display quality and load speed.
FAQ
Does compression lose quality?
JPEG and WebP use lossy compression - lower quality means smaller size but more artifacts. PNG is lossless, so size reduction is limited. Preview at 80% quality first, then adjust.
Which formats are supported?
PNG, JPEG and WebP for both input and output, with cross-format compression (e.g. PNG to WebP).
Can I batch compress?
Yes. Drag in multiple images to batch-compress them, each showing its own before/after size comparison.
Are images uploaded?
No. All compression runs locally in your browser via the Canvas API. Images never leave your device.
Any browser compatibility requirements?
This tool works in all modern browsers (Chrome, Firefox, Edge, Safari). No plugins required.
Can I use it offline?
After initial load, the core compression logic runs entirely in your browser with no network dependency.
Comments
Comments are stored locally in your browser. Configure Giscus for cloud-based comments.