Compress Image Online (Reduce File Size)

Free Online Image Compressor

Need to reduce image file size for faster website loading or email attachments? Our Image Compressor can reduce file sizes by 40-80% while maintaining visual quality. We show you the exact before/after sizes so you can see the savings.

How It Works

JPEG and WebP formats use "lossy" compression – they discard image data that's less noticeable to human eyes. At 70-80% quality, the visual difference is minimal, but file size drops dramatically.

Recommended Settings

80% Quality: Best balance – nearly indistinguishable from original.
60-70% Quality: Great for web images – significant size reduction.
40-50% Quality: Thumbnails and previews – smaller but noticeable artifacts.
WebP Format: Modern browsers support this – 20-30% smaller than JPEG.

Compress images without visible quality loss

Upload a photo that's too heavy and pull the quality slider until the file size is right. Most phone photos drop from 3–5 MB to under 500 KB with no difference you can actually see — the sweet spot is usually around quality 75–85.

Smaller images mean faster websites and forms that finally accept your upload. Compression happens locally, and you can compare the before/after preview before committing.

What people use it for

Shrinking photos for email attachments and upload limits
Speeding up websites and blogs (smaller images, faster pages)
Fitting images into forms that reject files over 1–2 MB
Batch-squeezing a photo library before cloud backup

Frequently asked questions

How much can I compress a JPG?

Typically 70–90% smaller at quality 80 with no visible loss. Heavy compression at quality 40–50 still looks decent for web thumbnails.

Does compression change the pixel dimensions?

No — dimensions stay identical; only the file size drops. Use the resizer if you also want fewer pixels.

Can I compress PNG files?

Yes. Photographic PNGs compress dramatically when converted toward JPG/WebP; graphics with flat colors stay PNG and get a modest lossless squeeze.

Is there a watermark or usage limit?

None. Unlimited files, no watermark, no sign-up — and nothing leaves your device.

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