Image Compressor
A fast, free image compressor that runs entirely in your browser. Drop in your JPG, PNG, or WebP image and reduce the file size without making it look worse. No account needed, nothing uploaded.
Drop image here or tap to upload
JPG, PNG, WebP, HEIC — up to 20 MB
What Makes a Good Image Compressor?
A good image compressor does two things well: it reduces file size as much as possible, and it preserves image quality well enough that you can't tell the difference at normal viewing distances. The best tools give you control over the compression level so you can find the right balance for your specific use case.
This compressor uses the browser's Canvas API with optimized JPEG encoding to achieve high compression ratios while keeping images looking sharp. For most photos, quality 80 reduces file size by 60 to 80 percent with no noticeable difference at screen resolution.
Quality vs File Size: Finding the Right Balance
| Quality Setting | Typical File Size Reduction | Best Use Case |
|---|---|---|
| 90 to 95% | 20 to 40% | Print, archiving, professional work |
| 80 to 89% | 50 to 70% | Web photos, social media, email |
| 70 to 79% | 65 to 80% | Thumbnails, previews, government forms |
| Below 70% | 75 to 90%+ | Very small file requirements only |
Use Cases for Image Compression
- Government exam forms: SSC, IBPS, RRB, UPSC, and other portals require photos under 50KB. Use target-size mode for precise control.
- Website and blog: Large images are the single biggest reason for slow-loading websites. Compress all images before uploading to WordPress or any CMS.
- Email attachments: Most email providers have attachment limits (usually 10 to 25MB). Compress large photo albums before attaching.
- Social media: Pre-compressing before WhatsApp, Instagram, or Facebook upload prevents their auto-compression from degrading your quality further.
- Cloud storage: Reduce the storage footprint of old photo libraries without permanently losing the original quality.
Frequently Asked Questions
What image formats does this compressor support?
This tool supports JPEG, PNG, and WebP as input formats. You can compress and output in JPEG, PNG, or WebP. JPEG gives the best compression for photographs. PNG is better for graphics and images with transparency.
Does image compression reduce dimensions or just file size?
Only file size. The pixel dimensions stay the same unless you also use the resize tool. Compression changes the encoding quality, which reduces how much data is stored per pixel without changing the number of pixels.
Can I compress multiple images at once?
Currently this tool processes one image at a time. For batch compression, you'd need a desktop application. This tool is designed for quick, single-image compression with live quality preview.
Will compression affect image quality permanently?
Yes, JPEG compression is lossy, meaning once you save at a lower quality, the information is permanently removed. Always keep a copy of your original file. Never re-compress an already compressed JPEG multiple times, as each round of compression stacks additional quality loss.