Image Compressor
Compress JPG, PNG, and WebP images in your browser — no uploads, no sign-up, no limits. Choose quality or target size mode for full control.
Drag & drop images here
or click to browse — JPG, PNG, WebP · up to 10 images
Free Online Image Compressor — Reduce File Size Instantly
Our free online image compressor lets you reduce the file size of JPG, PNG, and WebP images directly in your browser — no account, no watermark, no server upload. Whether you need to optimize images for a website, meet an upload size limit, or save storage space, this tool gives you full control: choose a quality percentage or set an exact target file size in KB. The result appears in seconds, with a clear before-and-after size breakdown and a one-click download.
Unlike cloud-based compressors that send your images to a remote server, every byte of your data stays on your device. The compression engine runs entirely in your browser using the HTML5 Canvas API — making it fast, private, and free from any file-size caps imposed by third-party servers.
How to Compress an Image Online
- 1
Upload your images
Drag and drop one or more image files onto the upload zone, or click it to open the file picker. You can add up to 10 images at once (JPG, PNG, WebP, GIF, or any format your browser supports).
- 2
Choose a compression mode
Select "By Quality" to set a quality percentage (10–95%). Lower values create smaller files; values above 80% are nearly lossless for most photos. Select "By Target Size" if you have a strict KB limit — the tool automatically finds the highest quality that fits.
- 3
Pick an output format (optional)
Keep the original format or switch to JPEG, PNG, or WebP. Converting a PNG photo to JPEG or WebP often cuts the file size by 50–80% on its own.
- 4
Compress and download
Click Compress. Each image shows its before/after size and the percentage saved. Download files individually or click "Download All" to grab everything at once.
Features
Quality slider (10%–95%)
Fine-tune the trade-off between file size and visual quality.
Target-size mode
Enter a KB limit and the tool auto-selects the best quality level.
Batch compression
Upload and compress up to 10 images in a single pass.
Output format conversion
Convert PNG or WebP to JPEG on the fly for maximum size reduction.
Visual savings bar
See exactly how much space you saved per image at a glance.
Drag-and-drop upload
Drop files straight from your desktop — no clicking required.
100% browser-based
Files never leave your device. Nothing is uploaded to any server.
Download all at once
One-click bulk download for batch-compressed images.
When Should You Compress Images?
Web and blog images
Large images are the most common reason for slow page loads. Compress blog hero images, product photos, and thumbnails to improve Core Web Vitals (LCP, CLS) and Google rankings.
Email attachments
Most email clients cap attachments at 10–25 MB. A folder of high-resolution JPEGs from a camera can easily exceed this. Compress before attaching.
Social media uploads
Instagram, WhatsApp, and LinkedIn recompress images on their end, often badly. Pre-compressing at your desired quality gives you control over the final look.
E-commerce product pages
Online stores with hundreds of product images benefit enormously from compression — faster browsing, lower CDN costs, and better conversion rates.
Mobile app assets
Developers reducing APK or IPA size benefit from compressing bundled image assets — every KB shaved from the build improves download conversion rates.
Form file size limits
Government portals, job application forms, and college admissions systems often require photos under 100 KB or 200 KB. Target-size mode handles this exactly.
Which Quality Setting Should You Use?
A practical guide for common scenarios:
| Quality | Best For | Typical Size Reduction |
|---|---|---|
| 80–95% | Portfolio, print proofs, professional photography | 20–50% |
| 60–75% | Blog posts, e-commerce products, social media | 50–75% |
| 40–55% | Thumbnails, preview images, chat backgrounds | 70–85% |
| 10–35% | Tiny avatars, government form photos with KB limits | 85–95% |
Actual reduction depends on image content. Photos compress much more than flat graphics.
Frequently Asked Questions
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