About Image Compressor
The Image Compressor provides a quick, privacy-respecting way to reduce image file sizes in the browser. It uses a canvas element to draw the image and then exports a compressed JPEG blob. Because compression is performed locally, the original file never leaves your device. This is convenient for preparing images for web use, reducing upload bandwidth, or creating optimized assets for blogs and documentation.
How to use
Choose an image from your device using the file picker. The image will preview in the tool. Adjust the quality slider to control compression level (0.1 = high compression, smaller size; 1.0 = best quality, larger size). Click Compress to generate a compressed version; once ready you can preview it and click Download to save the optimized file.
Benefits
Compressing images reduces page load time and bandwidth usage, improving user experience and SEO. Doing it client-side means you can quickly iterate without uploading sensitive images. This tool is ideal for single-image optimizations; for bulk compression, consider a build-step or server-side pipeline.
Tips & Best Practices
- Quality sweet spot: For photos, quality values between 0.6–0.8 offer good savings with minimal perceived loss
- Test different settings: Try various quality levels to find the best balance for your needs
- Preview before download: Always check the compressed image looks acceptable before saving
- Transparency note: JPEG format doesn't support transparency. Use PNG for images with transparent backgrounds
FAQs
- Q: Is this safe for private images?
A: Yes — processing is entirely local. Images are never uploaded to any server. - Q: What file formats are supported?
A: Most common image formats (JPEG, PNG, WebP) are supported as input. Output is JPEG. - Q: Can I compress multiple images?
A: Currently one image at a time. For batch processing, consider using dedicated desktop software.