Image Compressor
Compress images without visible quality loss
Image Compressor reduces JPG, PNG, and WebP file sizes by optimizing pixel data and stripping unnecessary metadata — smaller images load faster on websites and are easier to email or upload, without a visible drop in quality at normal viewing sizes.
Defaults to a high-quality balance of size and clarity. Lower this for smaller files, or raise it if you need the result closer to the original. PNG files stay lossless unless you set quality to 60 or below.
Choose an image above — processing starts automatically.
How to use Image Compressor
- 1
Upload one or more images (JPG, PNG or WebP).
- 2
Adjust the quality slider to balance file size against visual quality.
- 3
Preview the before/after file size comparison.
- 4
Download the compressed image, ready to use.
Everything you need to know about compressing images
What does image compression actually do?
Compression reduces a photo's file size by simplifying the pixel data it's stored with — either by discarding detail the human eye barely notices (lossy compression, used by JPG and most web-optimized formats) or by re-encoding the data more efficiently with no quality loss at all (lossless, used by PNG). For photographs specifically, a well-tuned lossy compression can cut file size 50–80% with no visible difference at normal viewing sizes.
When you actually need this
- Website performance — large uncompressed images are one of the most common causes of a slow-loading page.
- Email attachments — a handful of full-resolution phone photos can easily exceed attachment limits.
- Storage — compressing a large photo library saves meaningful space with no visible tradeoff.
Compression vs. resizing vs. converting — not the same thing
| Tool | What it changes |
|---|---|
| Image Compressor | File size, via quality/encoding — dimensions stay the same |
| Image Resizer | Pixel dimensions (width/height) — quality setting unchanged |
| Image Converter | File format (JPG, PNG, WebP, etc.) — may also change compression method |
How far can you compress before it looks bad?
There's no single right answer — it depends on the image and how it'll be viewed. A photo destined for a small thumbnail tolerates far more compression than the same photo displayed full-screen. That's why a live before/after preview (rather than a fixed setting) is the right way to compress: you can see the actual tradeoff and stop right before quality visibly drops, instead of guessing at a percentage.
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Frequently Asked Questions
How much can I shrink an image without losing quality?
Most photos compress 50–80% smaller with no visible difference at normal screen sizes — the slider lets you see the tradeoff in real time before downloading.
Which formats are supported?
JPG, PNG and WebP — for other formats, convert first with the Image Converter, then compress.
Does this work for logos and graphics with text?
Yes, though PNGs with sharp edges and flat colors compress differently than photos — the live preview shows you the actual result before you download.
What's the difference between compressing and resizing?
Compressing changes file size via quality/encoding while keeping the same pixel dimensions; resizing changes the actual width/height. Use Image Resizer if you need smaller dimensions, not just a smaller file.
Is compression lossy or lossless?
It depends on the format and quality setting — the live before/after preview shows you exactly what you'll get before downloading, rather than leaving it to guesswork.
Is my data safe when using this tool?
Yes. Files are processed securely and deleted from our servers within 1 hour.