Reduce image file size up to 90% without visible quality loss. PNG, JPG, WEBP. Everything processed in your browser.
or click to browse — PNG, JPG, WEBP (up to 50 files)
Drag & drop or select your PNG, JPG, or WEBP images. Process up to 50 at once.
Set the quality slider. 60-80% reduces file size dramatically with almost no visible difference.
Download individually or all at once. Your images never leave your device.
Compressed images load 3-5x faster, improving user experience and SEO rankings. Google uses page speed as a ranking factor.
Smaller files mean lower hosting costs and faster delivery, especially important for mobile users on limited data plans.
Most email providers limit attachment sizes to 25MB. Compressed images fit easily and load instantly in email clients.
Unlike cloud-based compressors, Vectowl processes everything locally in your browser. Your images never leave your device.
No. All compression happens locally in your browser using the Canvas API.
For web images, 70-80% gives excellent results with significant file size reduction.
Yes, WEBP typically produces 25-35% smaller files than JPEG at the same visual quality.
Removes some data permanently. JPEG and WEBP use this. At 70-85% quality, the visual difference is imperceptible while files shrink 60-80%.
No data is lost. PNG uses this. The original image is perfectly preserved. Typically achieves 20-50% size reduction.
Images account for ~50% of web page weight. Compressed images load 3-5x faster, improving both user experience and Google search rankings.
| Use case | Quality | Typical savings |
|---|---|---|
| Web pages & blogs | 75-85% | 60-75% smaller |
| E-commerce products | 85-90% | 40-60% smaller |
| Social media posts | 70-80% | 65-80% smaller |
| Thumbnails & previews | 60-70% | 75-85% smaller |
| Print & archival | 90-100% | 10-30% smaller |
| Feature | JPEG | PNG | WEBP |
|---|---|---|---|
| Compression type | Lossy | Lossless | Both |
| Transparency | ✗ | ✓ | ✓ |
| File size (photo) | Medium | Large | Smallest |
| Best for | Photos | Logos, icons | Everything |
| Browser support | Universal | Universal | All modern |
Vectowl compresses images entirely in your browser using the HTML5 Canvas API. Your images are never sent to any server, ensuring complete privacy. Processing speed depends only on your device, not your internet connection.
Does compression reduce image quality? At quality settings between 70-85%, the difference is virtually invisible to the human eye. Compression artifacts only become noticeable below 60% quality, appearing as blocky patterns around sharp edges and text. For most web use, the tradeoff between file size and quality is overwhelmingly worth it.
Should I compress images before uploading to social media? Social media platforms (Instagram, Facebook, Twitter) apply their own compression when you upload. However, starting with an optimized image gives better results because the platform's compression works with cleaner source data. Pre-compressing also speeds up your upload time significantly on mobile connections.
What about retina displays? Retina screens show more detail, but compressed images still look excellent at 80%+ quality because the higher pixel density masks any minor artifacts. The key is to provide images at 2x the display dimensions rather than increasing the quality setting.
How does browser-based compression compare to desktop software? Modern browser Canvas APIs produce results comparable to dedicated tools like Photoshop's "Save for Web" or TinyPNG. The main advantage of browser-based compression is privacy (your images never leave your device) and convenience (no software installation required). The main limitation is that very large images (over 50 megapixels) may be slow to process on older devices.