What is Image Compressor?
An image compressor reduces the file size of JPEG, PNG, and WebP images by applying compression algorithms that remove unnecessary data while preserving visual quality. Smaller image files load faster on websites, fit within email attachment limits, and improve Core Web Vitals scores for better SEO performance.
Best for
- Compressing JPEG and PNG images for websites
- Reducing email attachment sizes
- Shrinking uploads before forms or chats
- Optimizing images for web performance and SEO
Privacy
Image compression relies on browser-native canvas APIs and does not involve remote server processing. Your images never leave your device.
Quick tips
- Lower quality values reduce size but may introduce visual artifacts.
- Converting PNG to JPEG or WebP often yields the largest size reduction for photos and screenshots.
- Keep original dimensions unless you also need resizing.
- If you need transparency, prefer PNG or WebP instead of JPEG.
How to use this tool
- Select a JPEG, PNG, or WebP image file.
- Choose your target quality and output format.
- Click Compress and download the smaller image for web, email, or upload use.
Common questions
Can I compress JPEG and PNG images without uploading them?
Yes. The compression workflow runs locally in your browser, so your JPEG, PNG, and WebP files are not uploaded to a remote server. Everything happens on your device.
Which format gives the best compression?
WebP usually provides the best balance of quality and small file size for web use. It can reduce file size by 25–35% compared to JPEG at the same visual quality.
Should I choose JPEG, PNG, or WebP after compression?
JPEG is usually best for photos, PNG is useful when you need transparency or crisp graphics, and WebP often gives the best size-to-quality balance for websites.
Is EXIF data preserved?
Browser-based canvas compression generally strips EXIF metadata like location and camera info. This is often desirable for privacy when sharing images online.
How much can I compress an image without losing quality?
For JPEG and WebP, setting quality to 75–85% typically reduces file size by 50–70% with virtually no visible quality loss. For PNG, compression is lossless so quality stays the same, but file sizes are larger.
Is this image compressor free?
Yes, completely free. No account, no subscription, no hidden limits. You can compress as many images as you need.
Can I compress multiple images at once?
The image compressor processes one file at a time. For batch conversion of multiple images, use the Image Format Converter tool which supports bulk processing and ZIP download.
Does the compressor work offline?
Once the page loads, the compression logic runs entirely in your browser using the Canvas API. You can compress images even if your internet connection drops.