Browser tool
Compress & Resize Images for the Web
Drag in images, adjust quality and pixel dimensions, then compare the measured output before downloading.
Add images
JPEG, PNG, WebP, or AVIF. Processing stays in this browser.
Drop images here or choose files
Add one image or a batch. You can tune each image after upload.
Choose imagesQuick instructions
- 1
Load your assets
Drag-and-drop images or use the file picker. The tool queues each file, capturing original dimensions, weight, and format.
- 2
Set global defaults
Adjust target width, height, quality, and format. These defaults apply to all queued images.
- 3
Fine-tune per image
Override dimensions, aspect-ratio behaviour, format, and quality for individual images without losing your global baseline.
- 4
Export optimised files
Compress one asset at a time or run the full batch. Downloads happen instantly because processing stays on-device.
Examples & tips
Reduce a large portfolio photograph
Try WebP at a moderate quality, then use the measured before-and-after sizes to decide whether the visual trade-off works.
Create retina-ready thumbnails
Lock the long edge to 1600px, keep aspect ratio, and export as AVIF for crisp, lightweight gallery previews.
Ship accessible social cards
Resize social images to 1200×630 and compare the exported dimensions and file size before downloading.
Useful details
- Resize oversized source images to the largest dimensions they will actually be displayed at.
- Compare PNG and WebP output visually; the smaller format depends on the artwork and browser encoder.
About this tool
Large image files are the quickest way to bloat page weight and throttle Core Web Vitals. The Image Compressor gives you fine-grained control over output quality, format, and size without requiring uploads or an account.
Because everything runs locally, designers, marketers, and developers can iterate on variations safely—even with embargoed artwork or client assets. Drop in a batch of files, define default settings, and export optimised images that are ready for production.
Questions
- Does the compressor upload my images?
- No. All processing happens in your browser using the Canvas API, so sensitive artwork never leaves your device.
- Can I keep EXIF data for attribution?
- Only an unchanged file can retain its original metadata. Resizing or re-encoding through Canvas removes EXIF, copyright, GPS, and other embedded metadata.
- Which formats offer the best compression?
- WebP provides excellent balance for photographs, while AVIF unlocks the smallest files when your browser supports encoding.
- Will resizing stretch my artwork?
- Aspect ratios are locked by default. Disabling “keep aspect” resizes to the exact dimensions and may stretch the image; this tool does not crop.