Image Compressor — Free, Private, Browser-Based
Reduce image file sizes by up to 90% while keeping visual quality. Works on PNG, JPG, WebP, and AVIF. Everything runs locally in your browser — your images never leave your device.
How to compress images without losing quality
- Drop your image. Drag and drop one or more PNG, JPG, WebP, or AVIF files into the upload area, or click to browse. There is no file size limit.
- Choose output quality. Use the quality slider to pick a target (50–90% is the sweet spot for most photos; UI screenshots tolerate 70–80%).
- Pick output format. Keep the original format, or convert to WebP/AVIF for smaller files at the same visual quality.
- Download. Click Download to save the compressed image, or Download All for batch ZIP. EXIF metadata is stripped automatically.
Frequently Asked Questions
- Are my images uploaded to a server?
- No. Compression runs entirely in your browser using canvas APIs. Your files never leave your device.
- What formats are supported?
- Input: PNG, JPG/JPEG, WebP, AVIF, HEIC. Output: PNG, JPG, WebP, AVIF. Use the HEIC to JPG tool first if you need to convert iPhone HEIC files separately.
- Will compression lose quality?
- Lossy formats (JPG, WebP, AVIF) reduce quality slightly based on your quality slider. PNG uses lossless compression — pixel data is identical, just stored more efficiently.
- Is there a file size limit?
- No hard limit. Performance depends on your browser and device memory. We have tested files up to 50 MB without issue.
- Can I batch compress?
- Yes. Drop multiple files at once and download all as ZIP, or download individually.
- Does it strip EXIF metadata?
- Yes. Compressed images do not retain camera EXIF data (location, device, timestamps) for privacy.
Use Cases
- Compress photos for email attachments without losing quality
- Optimize images for faster website loading (especially WebP/AVIF conversion)
- Reduce file size for Substack, Medium, Notion, and Twitter uploads
- Strip EXIF metadata before sharing photos publicly
- Batch convert iPhone HEIC photos to web-friendly JPG or WebP