About Compress image
Compress image online before attaching a photo or publishing it on a website. You can reduce image file size without uploading by choosing a quality level and a maximum edge length. Compare the resulting size and appearance rather than assuming every image will become smaller.
How to reduce image file size
- Select one or more supported images.
- Choose quality and a maximum edge length, then select Process.
- Inspect the image and size comparison, then download the result or ZIP.
A practical example
- Input
A 4000 by 3000 JPG; Quality: 78; Maximum edge: 2400.
- Result
A recompressed JPG with dimensions constrained to fit a 2400-pixel maximum edge.
The example does not promise a particular byte size. Content, format, quality, and browser encoding affect the result.
Supported input and limitations
- There is no exact 100 KB or 200 KB target-size guarantee. PNG responds differently to quality controls than lossy JPEG or WebP.
- BMP sources are exported as WebP. Lowering quality or dimensions can discard image detail, so keep the original.
Image batches accept up to 100 files and 100 MB total. Source images must be within 12,000 pixels per edge and 48 megapixels. Batch results include a ZIP download.
Processing happens on your device. Read about local processing and optional workspace recovery.
Frequently asked questions
Can I compress an image to exactly 100 KB?
There is no exact byte-target setting. Try lower quality or smaller dimensions, check the output size, and repeat if needed.
Does image compression reduce quality?
Lossy formats can lose detail, and resizing reduces pixel dimensions. Review the preview at the intended display size before replacing your original.