Understand the source
We inspect dimensions, pixels, file size, format and aspect ratio before choosing a treatment.
✦ Image Lab · Compress
Compress images without guessing.
Image Lab checks your image first, explains what matters, recommends a practical compression level, and lets you compare the result before downloading.
🔒 Analysis and processing happen locally in your browser.
Drop your images here
Upload one image or a batch. Your originals stay untouched.
JPG · PNG · WebP · GIF · BMP · AVIF
Your image
Diagnosis
Adjust manually
Manual controls
Change quality, width or format only if you want a different trade-off.
SmallerHigher quality
Leave empty to compress without resizing.
Estimated size —Estimated savings —Output —
ORIGINAL![Original image preview]()
OPTIMIZED![Optimized image preview]()
Compression that starts with the purpose
The same image can need completely different treatment for a website, an email, a store or a high-quality archive.
Choose the trade-off
Use a purpose-based goal or control quality, maximum width and output format yourself.
See the actual result
Compare the original with the generated file and see the real size reduction before downloading.
Frequently asked questions
Does the image leave my device?
No. The core compression workflow uses browser APIs and processes the selected images locally.
What is the best format for a website?
WebP is a strong default for photographs and general web images because it usually provides a good quality-to-size balance.
Will compression reduce quality?
Lossy compression always involves a quality-size trade-off. The preview lets you judge the actual result before downloading.
Can I compress several images at once?
Yes. Select multiple images and the same treatment is applied to the batch. Each original remains untouched.
Can I resize while compressing?
Yes. Set a maximum width while adjusting manually.