Upload an image and compress it to JPEG. Adjust quality to control file size.
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Select an image file above to get started. Supported formats: PNG, JPG, GIF, WebP, and more.
Images are compressed entirely in your browser. No files are uploaded to any server. Your privacy is protected.
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What is the Image Compressor?
An image compressor is a tool that reduces the file size of digital images (JPG, PNG, WebP, and other formats) by removing redundant or invisible data. It uses lossy compression (which discards some data the eye won't notice, like subtle colour gradations) or lossless compression (which keeps every pixel but reorganises the file structure more efficiently). The result is a smaller file that loads faster, takes up less storage, and is easier to share—while looking virtually identical to the original.
How it works
The compressor analyses your image's pixel data and removes or simplifies information that humans can't perceive. For JPG files, it reduces colour precision in shadows and highlights. For PNG files, it optimises the colour palette and metadata. The tool applies algorithms that balance file size against visual quality, letting you choose how aggressive the compression is. Advanced compressors also strip unnecessary metadata (camera make, GPS location, timestamps) that adds bulk. The compressed file is then downloaded—the original stays private.
Examples
Input
Result
Notes
4.2 MB JPG photo from a phone camera
1.1 MB (74% reduction)
Phone photos contain high-resolution metadata and colour data. Compression removes invisible detail and unnecessary EXIF headers while keeping the image sharp.
850 KB PNG screenshot with text
240 KB (72% reduction)
Screenshots compress well because they have solid colour blocks. PNG lossless compression reorganises these blocks without losing the text clarity.
2.8 MB PNG graphic with gradients and transparency
680 KB (76% reduction)
Gradients and transparency are re-optimised. The tool reduces colour depth where the eye won't notice while preserving sharp edges and the alpha channel.
How to use the Image Compressor
Upload your image file (JPG, PNG, WebP, GIF, or JPEG) by dragging it onto the tool or clicking the upload button.
Choose your compression level: Preview mode shows before/after; choose how much quality loss you'll accept.
Optionally toggle metadata removal to strip EXIF data (camera info, GPS, timestamps) and reduce file size further.
Click 'Compress' and wait for processing (usually under 10 seconds for typical file sizes).
Compare the original and compressed versions side by side to confirm quality is acceptable.
Download your compressed image and use it in place of the original.
Benefits
Faster website load times: a 5 MB image compressed to 1 MB improves page speed by 2–3 seconds on mobile networks.
Smaller storage and bandwidth costs: 70% smaller files mean less server storage and lower data egress charges.
Better mobile experience: smaller images load instantly on slow 4G/3G connections and consume less phone storage.
SEO boost: Google rewards fast-loading sites with higher search rankings; image compression directly improves Core Web Vitals.
Email and messaging: compressed images fit attachment limits and send faster, ideal for portfolios and client deliverables.
No loss of perceived quality: modern compression is invisible to the human eye—most visitors won't see any difference.
Tips & common mistakes
Common mistakes
Compressing already-compressed images: re-compressing JPG multiple times degrades quality; compress once and save the result.
Using maximum compression on photos with important detail: fine-grain detail (skin texture, hair, fabric) needs some quality headroom.
Forgetting to check the preview: always compare before/after side by side; what looks fine on a desktop may be blurry on mobile.
Compressing the wrong format for the job: PNG lossless compression works great for graphics; JPG works better for photos. Choose wisely.
Tips
Aim for 0.5–2 MB per image on websites: this balances quality and speed. A 10-image gallery totalling 20 MB will feel sluggish.
For web, use progressive JPG (loads low-res first, then refines) and WebP format (20–30% smaller than JPG); this tool supports both.
Remove metadata before sharing to protect privacy: compress + metadata removal strips camera model, location data, and timestamps automatically.
Test compressed images on the devices your audience uses: mobile, tablet, and desktop viewing conditions reveal compression artifacts faster than you'd expect.
Frequently asked questions
Does compression make my image look worse?
Not visibly, if done correctly. Modern compression removes data your eye can't perceive. Use the 'Preview' option to compare side by side. Most people see no difference at 60–70% compression; anything beyond 85% may show artefacts (blotchiness, colour banding). Start conservative and increase if needed.
What's the difference between lossy and lossless compression?
Lossy (JPG) discards some pixel data to shrink files drastically; great for photos but can't restore the original exactly. Lossless (PNG, WebP lossless) keeps all data but compresses more efficiently; ideal for graphics, screenshots, and images needing perfect clarity. This tool handles both automatically based on format.
Will my original image be affected?
No. The compressor never touches your original file. You upload, the tool creates a new compressed copy, and you download that copy. Your original remains unchanged on your device and in your cloud storage.
Is there a file size limit?
Most free compressors handle 50–100 MB files without issues. Very large files (over 200 MB) may take longer to process. For bulk compression, use command-line tools (ImageMagick, ffmpeg) or batch plugins in Photoshop or Lightroom.
Should I compress before or after uploading to WordPress/Shopify?
Compress first on your device, then upload. These platforms often re-compress on their own, so starting with an already-small file ensures the best final result. Some platforms like Shopify auto-optimise; Contentful and Vercel also offer native compression.
Can I batch compress multiple images at once?
This tool compresses one image at a time. For bulk compression, use online batch tools, Photoshop scripting, or command-line tools like ImageMagick ('mogrify -quality 85 *.jpg') to process entire folders automatically.