Image Compressor
Reduce image file sizes without visible quality loss.
Reduce image sizeQuality controlsLocal image processingBrowser-based processing
Image compressor tool
Lower quality usually creates a smaller file. Resizing large images can reduce file size more than quality alone.
Upload or drag an image
JPG, PNG, or WebP up to 20.00 MB
Canvas-based compression may remove metadata such as EXIF camera details. Keep important originals backed up before replacing them.
Compression preview and export
Compare original and compressed images, check file-size savings, then download the optimized file.
Original
Upload an image to preview it here.
Compressed
Compressed preview appears here.
Original size
Not uploaded
Compressed size
Not compressed
Size saved
Not compressed
Reduction
Not compressed
Output format
JPG
Quality setting
78%
Original dimensions
Not uploaded
Compressed dimensions
Not compressed
Browser processing
Images are compressed in this browser page with canvas.
Quality controls
Adjust quality for JPG and WebP or resize large images before export.
Before and after
Compare file sizes, dimensions, and preview output before downloading.
Dynamic Compression Insights
Upload a JPG, PNG, or WebP image to begin.
Lower quality usually creates a smaller file for JPG and WebP.
Resizing large images can reduce file size more than quality alone.
JPG is usually best for photos, but it does not support transparency.
Resize is off, so dimensions are preserved unless the image exceeds canvas limits.
How Image Compression Works
Compression reduces file size by changing quality, format, dimensions, or metadata.
Lossy compression removes some detail to reduce size.
Resizing reduces pixel count.
Format choice affects file size and transparency.
Compression results depend on the original image.
Already-compressed files may not shrink much.
Quality, Dimensions, Formats, and File Size Explained
Quality controls lossy export strength.
Lower quality usually means smaller file size.
Dimensions control how many pixels the image contains.
Large dimensions can create large files.
Format affects compression behavior.
Best settings depend on whether the image is a photo, graphic, screenshot, or transparent asset.
JPG, PNG, WebP, Transparency, and Metadata Notes
JPG is efficient for photos but removes transparency.
PNG is useful for logos, screenshots, and transparent graphics.
WebP often creates smaller files with good quality.
Transparent images should avoid JPG unless a background is added.
Metadata may be removed by canvas-based export.
Check quality before replacing original files.
Back up important originals before compression.
Common Image Compression Examples
Compress a JPG photo for email.
Reduce a PNG screenshot size.
Convert a large photo to WebP.
Resize a 4000px image to 1200px before export.
Compress product images for a website.
Shrink images for social upload.
Reduce image size for a form upload.
Preserve transparency for a logo.
Website, Social, Email, and Storage Use Cases
Website performance.
Blog images.
Ecommerce product photos.
Email attachments.
Social media uploads.
Portfolio images.
School submissions.
Cloud storage.
App assets.
CMS image cleanup.
Privacy and Local Processing Notes
Uploaded images are processed in the browser with canvas.
No account is required.
This page does not add backend storage or a server compression step.
Use care with personal photos, IDs, medical images, financial screenshots, or confidential work files.
Only compress images you own or have permission to use.
Compression can remove metadata and reduce visual quality.
Large images may be slow or fail on memory-limited browsers.
Review the preview before replacing an original file.
Method Explanation
1. Upload an image.
2. Validate the file type and size.
3. Optionally resize the image while preserving aspect ratio.
4. Draw the image into a browser canvas.
5. Export the canvas using the selected format and quality.
6. Compare original and compressed file sizes.
7. Preview and download the compressed image.
Frequently Asked Questions
An image compressor reduces image file size by changing quality, format, dimensions, or export settings.
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Related reading
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