Image Compress
Adjust quality to reduce file size. Move the slider to see a live size estimate.
Supports JPG, PNG, WebP
Drag or click to select image
JPG, PNG, WebP · Max 50MB
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About Image Compress
Reduce image file sizes without visible quality loss. Compressed images load faster on websites and take less storage space. Works with JPEG, PNG, and WebP.
How to Compress an Image
- 1Upload the image you want to compress.
- 2Adjust the quality slider to set the compression level.
- 3Click Compress and see the file size comparison.
- 4Download the compressed image.
Popular Use Cases
Speed up your website
Compressed images load faster and improve Core Web Vitals scores, which benefits both SEO and user experience.
Meet upload size limits
Marketplaces, forums, and application forms often cap image uploads at 1–5 MB. Compress photos to fit while keeping them sharp.
Send photos faster
Smaller images attach and send faster in email and messengers, and use less mobile data.
Free up storage space
Modern phone cameras produce 5–15 MB photos. Compress them before archiving to save gigabytes.
Why FileZoom
No upload — photos stay private
Compression runs fully in your browser, so personal photos never leave your device.
Free with no limits
Compress as many images as you want — no account, no watermark, no daily quota.
Quality slider with size preview
Fine-tune the balance between quality and size, and check the resulting file size before downloading.
JPEG, PNG, and WebP support
Compress the three most common web formats with one tool, keeping the original format of each file.
Formats & Features
| Supported formats | JPEG, PNG, and WebP, processed one image at a time. |
|---|---|
| Output | The same format and pixel dimensions, re-encoded at a smaller file size. |
| Quality control | A slider from low to high; 80% is the recommended balance for most photos. |
| Typical reduction | 40–70% for JPEG with little visible difference; PNG results vary more. |
| Metadata | EXIF data such as GPS location and camera details is stripped during re-encoding. |
| Processing | 100% in your browser via the Canvas API. Photos never leave your device. |
How It Works
The tool draws your image onto an in-memory canvas using the browser's Canvas API, then re-encodes it at the quality level you choose. Re-encoding rebuilds the image data more efficiently and discards invisible overhead such as bulky metadata. Everything runs on your device — the photo is never uploaded, and the original file on disk is left untouched.
Tips & Best Practices
- Start at 80% quality and lower it gradually while watching the size preview — stop when quality starts to suffer.
- For the smallest web images, convert to WebP first, then compress — WebP beats JPEG by 25–35% at similar quality.
- Compressing also removes location metadata, a quick privacy win before sharing photos publicly.
- Have many images? Use Batch Convert to handle up to 50 at once instead of one by one.
FAQ
How much can image size be reduced?
JPEG images can typically be reduced by 40-70% with minimal visible difference. PNG results vary more.
Does compression change the image dimensions?
No. Only the file size is reduced; the pixel dimensions remain the same.
What quality setting should I use?
80% quality is a good balance between file size and visual quality for most uses.
Are images uploaded to a server?
No. All compression is done locally in your browser using the Canvas API.
What is the difference between lossy and lossless compression?
Lossy compression (JPEG, WebP) discards visually insignificant detail for much smaller files. Lossless (PNG) preserves every pixel but reduces size less.
Can I compress many images at once?
This tool processes one image at a time for precise control. For bulk work, use FileZoom's Batch Convert tool, which handles up to 50 images in one go.
Does compression remove EXIF metadata?
Yes. Re-encoding strips metadata such as GPS location and camera details — which also protects your privacy when sharing photos.
Which format produces the smallest files?
WebP usually beats JPEG by 25–35% at similar quality. If your target supports it, converting to WebP plus compression gives the smallest result.