Compress Images Online
Reduce file size by up to 80% with no visible quality loss. Free, no signup.
Supports JPG, PNG, WEBP, GIF, TIFF, BMP — up to 50MB per file, 50 files at once.
Image compressor
Drag and drop files or folders here, or
JPG, PNG, WEBP, GIF, TIFF, BMP, AVIF, HEIC — up to 50MB each, or 50 from a folder
Full compressor — every format
Ctrl+Z undo · Ctrl+Y redo
Remove EXIF, GPS, and other metadata for smaller files
Total savings:
( saved)
Keyboard Shortcuts
General
How It Works
1. Upload
Drop your images or a folder. Up to 20 files, or 50 from a folder.
2. Compress
We find the smallest file that still looks identical to the original, then stop.
3. Download
Download individually or as a ZIP. Files auto-delete after 1 hour.
Compress by Format
Learn how compression works for each format and use a dedicated compressor.
KoalaPic vs TinyPNG
| Feature | KoalaPic | TinyPNG |
|---|---|---|
| Price | Free | Free (20/month limit) |
| Batch uploads | 50 files | 20 files |
| Max file size | 50 MB | 5 MB |
| Quality control | SSIM-based (3 levels) | Automatic only |
| Target size mode | Yes | No |
| Formats | JPG, PNG, WEBP, GIF, TIFF, BMP | PNG, JPEG, WebP |
| API access | Free (rate-limited) | Paid only |
Frequently Asked Questions
Smart Quality uses SSIM (Structural Similarity Index) to find the lowest file size that still looks identical to your eye. Choose High for near-perfect quality, Medium for a good balance, or Low for maximum savings. Target Size compresses until the file fits within your specified size limit — useful when you need to meet upload restrictions.
SSIM ranges from 0 to 1, where 1 means identical to the original. Values above 0.95 are visually indistinguishable in most cases. Our Smart Quality modes target 0.92 (Low), 0.95 (Medium), or 0.98 (High).
Yes. Your images are processed on our server and automatically deleted after 1 hour. We do not view, share, or use uploaded images in any way. No account is required.
Need to change dimensions instead? Resize images · Need a different format? Convert images
More tools
- Convert HEIC, RAW, AVIF to anything.
- Resize Percent, pixels or preset.
- Crop Snaps to faces for you.
- Edit Rotate, filter, enhance.
- Remove BG One click, no green screen.
- Video Clips, frames and GIFs.
- Bulk Up to 50 images at once.
- Annotate Arrows, boxes, blur and text.
- Inspect Read EXIF and metadata.
- Identify Detect format by magic bytes.
- Compare SSIM and PSNR side by side.
- Metadata Write EXIF, GPS, copyright.