JPG (JPEG)
The universal standard for photos. Lossy compression — discards detail to shrink files. Best for photographs and any image with continuous color gradients (skies, skin, blurred backgrounds). Doesn't support transparency.
Free Image Compressor
Compress JPG, PNG and WebP images in seconds — adjust quality, resize to a maximum dimension, switch format. 100% private: compression runs in your browser. Your images never upload.
- Files stay on your device
- Typical 60–90% size reduction
- Free, no signup
- Bulk: downloads as ZIP
Drop images here or click to choose · up to 50 files · JPG, PNG, WebP
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Drop JPG, PNG or WebP files into the bar above to start.
Compression runs entirely in your browser. Nothing is uploaded.
How to compress images online
- Drop your images. JPG, PNG and WebP — up to 50 at a time.
- Pick quality and format. 80% quality is the sweet spot; WebP gives the smallest files.
- Compress & download. Single image downloads directly. Multiple come bundled in a ZIP.
Why compress images at all?
1
Faster page loads
Images are typically the heaviest assets on a webpage. Cutting them by 70% directly improves Core Web Vitals — Largest Contentful Paint, Total Blocking Time and ranking in Google.
2
Smaller email attachments
Most email systems cap attachments around 25 MB. Compressing 5 MP photos down to a few hundred KB lets you send dozens of images in one email instead of one.
3
Cheaper cloud storage & bandwidth
Smaller images = lower S3 / Cloudflare / hosting bills, especially at scale. Web teams shipping thousands of product photos see immediate savings.
4
Side benefit: privacy
Canvas-based compression strips all EXIF and XMP metadata — GPS coordinates, camera serial numbers and timestamps. Useful when you want clean images to share publicly.
JPG vs PNG vs WebP — which format should you use?
PNG
Lossless compression — bytes change but pixels don't. Best for screenshots, logos, diagrams, anything with sharp edges or text. Supports transparency. Files are usually larger than JPG, but the quality is perfect.
WebP
Modern format from Google. Both lossy and lossless modes, plus transparency, plus animation. Typically 25–35% smaller than equivalent JPG. Supported by all modern browsers (Chrome, Firefox, Safari, Edge) — but not by older email clients or some legacy software.
Frequently asked questions
Is the image compressor really free?
Yes — completely free, no signup, no watermarks, unlimited use.
Are my images uploaded to a server?
No. The compressor runs as JavaScript in your browser using HTML5 canvas. Your images never leave your device.
Will compression hurt the visual quality?
At 80% JPG/WebP quality, the difference is barely perceptible. PNG compression is lossless — visually identical. For archival, push quality to 95%; for thumbnails, drop to 60%.
How small can files get?
Combining 70% quality with resize-to-1920px on photos shot at 12+ MP typically yields 80–90% reduction. WebP gives an extra 25% on top of JPG.
Is metadata (EXIF, GPS) preserved?
No — canvas-based compression strips all metadata. That's a privacy plus. To inspect or remove specific fields without re-encoding, use the EXIF Viewer & Remover.
Can I compress in batch?
Up to 50 images at once. For thousands of files across folders, use the FilesDesk desktop app.
Why is my PNG bigger after compression?
PNG is lossless — quality slider doesn't apply. The output may be similar in size to the input, especially if the original was already optimised. Switch to WebP or JPG for major savings.
Need to compress, rename and organise photos in bulk?
FilesDesk processes whole folders, renames each image based on what's inside, and works offline or online on Mac & Windows.
Try FilesDesk free