Image Compressor

Reduce image file size by adjusting JPEG quality while previewing the result.

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Click or drag image here

JPG, PNG, WebP supported · Max recommended 25MB

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About this tool

Our free image compressor reduces your photo file size without visible quality loss. Compress JPG, PNG and GIF files instantly in your browser. Whether you need to shrink photos for a website, reduce attachment sizes for email, or meet upload limits for online forms, our tool makes it simple.

Key features

Compress JPG, PNG and GIF images
Adjustable quality slider for full control
Reduces file size significantly
No uploads to any server — fully private
Works instantly on mobile and desktop
No registration or subscription needed

Common uses

Compress photos for website page speed
Reduce image size for email attachments
Shrink images to meet online form upload limits
Prepare photos for WhatsApp and messaging apps
Reduce storage usage on your device

How it works

Image Compressor works by re-encoding the image data rather than changing its pixel dimensions, so the photo looks the same size on screen but takes up less storage and loads faster. The right setting depends on the photo: images with lots of fine detail (text, patterns) need a higher quality setting than simple photos with large smooth areas like skies or plain backgrounds.

Tips for best results

Start around 75-80% quality — most photos look identical to the original at this setting.
JPG compresses much further than PNG; convert PNG photos to JPG first if you don't need transparency.
Compress after resizing, not before — a smaller image compresses to a smaller file automatically.
Preview the result before downloading to make sure text and fine detail are still readable.

Frequently asked questions

How much can I compress an image?

JPG photos can often be compressed to 20-30% of their original size with minimal visible difference.

Does compressing an image reduce its dimensions?

No. Our compressor reduces file size only — the pixel dimensions stay the same.

Is there a file size limit?

We recommend files up to 25MB.

Can I compress a PNG without losing transparency?

Yes. PNG output preserves transparency.

How do I compress to a specific KB size?

Use our Resize to KB tool which lets you set an exact target file size.

Will compression make my photo look worse?

At moderate settings, most compression is invisible to the eye. Very aggressive compression can introduce visible blockiness in fine detail.

Which format compresses better, JPG or PNG?

JPG generally compresses photos far smaller than PNG. PNG suits graphics, logos, and images needing transparency.

Is my photo uploaded to a server when I compress it?

No. Compression happens directly in your browser using JavaScript — your image never leaves your device.

Is this a photo resizer and compressor in one tool?

Yes, this tool handles both resizing dimensions and compressing file size in the same workflow, so you don't need a separate photo resizer and compressor for each step - adjust the quality slider to shrink file size while keeping the resolution you set.