img
image
format
.org
Tools
Image Tools
jpg
Image Compressor
Reduce PNG / JPG / WebP size
fmt
Format Converter
JPG ↔ PNG ↔ WebP
px
Image Resizer
Resize to exact dimensions
PDF
pdf
Images → PDF
Merge images to PDF
img
PDF → Images
Extract PDF pages
i
About
imageformat.org
🗜
Image Compressor —
PNG, JPG & WebP
Browser-local · No upload
·
Batch supported
·
No watermarks
⚡ Standard Compress
🔬 Multi-Algorithm Compare
🗜
Drop images here, or click to browse
JPG · PNG · WebP ·
Batch supported
· No size limit
Compression settings
Quality
90% — Near lossless
82% — Recommended
75% — Balanced
60% — Smaller file
45% — Max compression
Output format
Same as input
JPG
PNG
WebP
↓ Compress All
✕ Clear
Multi-algorithm compare
🔬 Runs 7 compression strategies simultaneously — pick the best result for each image. Processes one file at a time.
🔬 Run Comparison
✕ Clear
More Tools
🔄
Format Converter
Convert JPG ↔ PNG ↔ WebP
→
📐
Image Resizer
Resize to exact dimensions
→
📄
Images → PDF
Merge images into a PDF
→
🖼
PDF → Images
Extract PDF pages as images
→
FAQ
Does compression reduce visible quality?
At 75–85% quality the difference is invisible while file sizes drop 50–80%. PNG compression is always lossless — no quality loss at all.
Which format gives the smallest file size?
WebP is typically 25–35% smaller than JPEG and 50–80% smaller than PNG at equivalent quality.
What quality setting should I use?
For web images, 75–85% is ideal. For archiving or print, use 90%+.
Can I compress multiple images at once?
Yes. Drop multiple files, click Compress All, then download individually or as a ZIP archive.
Is this tool completely free?
Yes. imageformat.org is supported by advertising. All features are free — no paywalls, no watermarks.
Are my images uploaded to a server?
No. All compression happens locally in your browser using the HTML5 Canvas API. Your images never leave your device.