Image Compressor
Compress and reduce image file size without losing quality. Supports JPEG, PNG, WebP.
Click to select an image or drag and drop
Supports JPEG, PNG, WebP
Shrink JPEG, PNG, and WebP files in your browser with a quality slider that shows the tradeoff between file size and visual fidelity. Drop in photos straight from a camera, see the before-and-after side by side, and download versions optimized for web or email. Because everything runs in the browser via the Canvas API, your images never leave your device.
Modern cameras capture photos at resolutions and quality levels that are overkill for most uses. A phone photo straight off the camera might be 5–12 MB, which is painful to email, slow to upload, and absurd for a web page where it ends up displayed at 800 pixels wide. Compressing to an appropriate size cuts file sizes 80–95% with no visible loss — and loads pages dramatically faster.
JPEG is the right choice for photos. Its lossy compression exploits the fact that eyes care more about luminance than color, and typical quality settings between 70 and 85 are visually indistinguishable from the original for most content. PNG is better for graphics with sharp edges, text, or transparency — it's lossless, so quality settings don't apply, but downscaling and paletting can still cut size considerably. WebP does both jobs better than either at the cost of slightly older-browser compatibility, but today every modern browser supports it.
The biggest single win for file size is downscaling, not quality. An image meant for a 1200-pixel-wide blog layout doesn't need to be 4000 pixels wide. Reducing dimensions first, then tuning quality, usually gives the best result.
- 1
Upload your image
Drag and drop a JPEG, PNG, or WebP file, or click to pick one from your device. Multiple files can be processed one at a time.
- 2
Adjust quality and size
Use the quality slider (for JPEG/WebP) and optional resize fields to find the right balance. The preview updates so you can see when quality degrades.
- 3
Pick output format
Keep the original format or convert: JPEG for photos, PNG for graphics with transparency, WebP when browser support allows it.
- 4
Download the compressed version
Save the smaller file. Check the file-size reduction shown in the UI to confirm the savings.
Blog and website images
Keep page-load times fast by compressing photos to around 200–500 KB instead of serving multi-megabyte originals.
Email attachments
Avoid bouncing emails with oversized attachments by compressing photos before hitting send.
Social media uploads
Many platforms recompress aggressively — uploading a pre-compressed version gives you more control over the final quality.
Mobile data savings
Lighter images cost users less data and load faster on slow connections.
Is image quality really preserved?
JPEG and WebP use lossy compression, so quality does decrease — but at settings between 70 and 85, the loss is imperceptible for most photos. The preview lets you tune until you can't tell the difference, then save.
Are my images uploaded anywhere?
No. Compression runs in your browser using the Canvas API. Images are processed in memory and never uploaded, logged, or stored anywhere outside your device.
Why is my PNG bigger than the original?
PNG is lossless, and re-encoding a PNG often produces a slightly larger file because the original was already optimized. For photos, converting to JPEG or WebP gives much better savings. Keep PNG only for graphics with text, sharp edges, or transparency.
Can I batch-process many images?
The UI processes one image at a time. For hundreds of images, a build-time tool (like sharp or imagemin in Node) is a better fit. For a handful, this tool is quicker.
What's the maximum file size I can compress?
Practical limits depend on your device's memory. Most browsers handle 20–50 MB images comfortably. Very large RAW photos (100 MB+) may cause the tab to slow down or crash — consider downscaling first in a desktop app.