Image Compressor
Compress JPG, PNG, and WebP images. Reduce file size by up to 80% while maintaining quality.
Drop your Images (JPG, PNG, WebP) here
or click to browse
How to Compress Images - Step by Step Guide
Upload Images
Select or drag your images to upload
Choose Quality
Select compression level (higher = better quality, larger file)
Compress
Click compress - images are processed in your browser
Download
Download your compressed images instantly
Frequently Asked Questions about Image Compression
How does image compression work?
Will compression affect image quality?
Is this image compressor free?
The complete guide to Image Compressor
Last updated June 1, 2026Compressing an image for web use, email, or upload portals reduces file size without degrading visible quality — done right, you lose less than you'd notice at any normal viewing distance. Convertify's Image Compressor supports JPG, PNG, WebP, and GIF, runs entirely in your browser, and lets you dial compression with a quality slider or target a specific file size.
The core tradeoff in image compression is quality vs. size. JPEG compression is lossy — every quality reduction removes some pixel data permanently. PNG compression is lossless — it rearranges pixel data more efficiently but removes nothing. For photos, JPEG at 70-85% quality is visually nearly identical to the original while being 60-80% smaller. For icons, logos, and screenshots with solid colors, PNG lossless stays sharp; convert to WebP for smaller sizes.
How Image Compressor on Convertify compares
| Feature | Convertify | Typical online tool |
|---|---|---|
| Files uploaded | Never | Yes |
| Formats supported | JPG, PNG, WebP, GIF | JPG only |
| Batch compression | Yes (ZIP download) | One at a time |
| Target size mode | Yes | Quality slider only |
| Daily limit | Unlimited | 20 images/day |
| Sign-up | No | Often |
Step-by-step: how to use Image Compressor
- 1
Upload your images
Drop one or multiple images (JPG, PNG, WebP, GIF) onto the upload zone. Batch mode compresses all at once.
- 2
Set compression level
Drag the quality slider (10-100%) or type a target KB/MB. Lower quality = smaller file. 80% is a good starting point for photos; 90-95% for product images where sharpness matters.
- 3
Compress and download
Compressed images download individually or as a ZIP for batch jobs. The original vs. compressed file size comparison is shown for each image.
Real-world scenarios
Web page performance optimization
Unoptimized images are the most common cause of slow page load times. A 5 MB hero image compressed to 200 KB loads 25x faster and improves Core Web Vitals scores — directly affecting Google rankings for the page.
Email attachments under size limits
Gmail and Outlook block attachments over 25 MB. Compress multiple product photos or event photos before attaching — a folder of 20 photos goes from 60 MB to under 10 MB without visible quality loss.
E-commerce product images
Online stores typically need product images under 200-500 KB per image for fast loading. Compress product photos in batch before uploading to Shopify, WooCommerce, or similar platforms.
Social media uploads
Twitter compresses images aggressively and adds visible artifacts. Compress your images to near the platform's maximum quality threshold yourself before uploading, so you control the compression rather than the platform.
Troubleshooting and edge cases
The compressed image looks noticeably different from the original.⌄
You may have used too low a quality setting. Try 75-85% for photos — the difference between 85% and 100% is virtually invisible, and file size typically drops 50-70% in that range. Only drop below 70% when file size is critically constrained.
The compressed PNG is bigger than the original.⌄
This can happen if the original PNG was already well-optimized. PNG compression is lossless — you can't make a lossless file smaller beyond a certain point. Convert the PNG to WebP or JPEG instead for a substantial size reduction.
I want to compress without any quality loss.⌄
Use 100% quality mode for JPEG (minimal loss) or lossless mode for PNG/WebP. True no-loss compression of JPEGs only strips metadata (EXIF) and redundant color table entries — the typical saving is 10-20%.