Compress Image Online
Upload an image, choose JPG or WebP compression, adjust quality and optional width, then download a smaller file.
Your compressed image will appear here
Reduce image file size before uploading or sharing
Quality-based compression
Lower quality to reduce file size while previewing the compressed result before download.
Optional max width
Scale down large photos during compression for an additional size reduction.
Private local compression
Váš obrázek zůstane ve vašem prohlížeči. ImageConver nenahraje zdrojový soubor.
Jak to funguje
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1
Nahrajte obrázek
Choose a photo, screenshot, or product image from your device.
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2
Set compression
Pick JPG or WebP, set quality, and optionally limit the width.
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3
Download smaller file
Check the before and after size, then save the compressed image.
How to compress images without overdoing it
For photos, quality between 70 and 85 often gives a good balance between size and appearance. WebP can be smaller than JPG in many browsers, while JPG remains widely compatible for uploads and older workflows.
Často kladené otázky
Can this compress PNG files?
You can upload PNG files, but the compressed output is JPG or WebP because those formats support quality-based file reduction.
Je můj obrázek nahrán?
No. Your image stays in your browser and compression runs locally.
Why use max width?
Large camera photos often have more pixels than needed. Reducing width can lower file size more than quality changes alone.
Compress Image Online last reviewed: Jun 27, 2026.