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OnlyCompress
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Free Online JPG Compressor

Batch compress up to 30 images at once. Quickly reduce image size without losing quality. Files are never uploaded to a server — all processing happens locally on your device.

Select Images ⟶

Drag and drop JPG images here, or paste (Ctrl + V / ⌘ + V) for quick import. Other formats will automatically convert to JPG. ? JPG does not support transparent backgrounds. To keep transparency, please use PNG compression.

How to Use

Supports Multiple Formats

Optimized specifically for JPG/JPEG compression. Also supports common formats including PNG, GIF, BMP, WEBP, AVIF, SVG, HEIC, HEIF, TIF, TIFF, and PSD. Non-JPG images will automatically optimize and compress into standard JPG format.

Compress JPEG to Target Size

Once compression is complete, click the thumbnail and drag the sliders to fine-tune image quality and scale. Quickly compress images down to a specific size (e.g., compress jpeg to 100kb).

Real-Time Preview

Click thumbnails to compare original vs. compressed images side-by-side. Adjust settings on the fly to get your ideal result effortlessly.

100% Free Forever

Completely free to use with no usage limits or daily quotas. Supports unlimited batch processing for both daily and high-volume needs.

No Registration Required

Skip tedious sign-up and login forms. Access full features instantly with just one click—a pure, hassle-free efficiency tool.

Save Data Usage

Powered by advanced WebAssembly/JavaScript technology, all compression runs locally in your browser. Files are not uploaded to any server, so no additional network data is used.

No Watermarks

Compressed images keep their original content with no added watermarks or branding. Outputs are clean and professional, ready for work or publishing.

Privacy & Security

All images are processed locally within your browser and never uploaded to any server. Your data never leaves your device, ensuring total privacy.

JPG Compression Use Cases

  1. Compress JPG for Website Performance Optimization

    JPG images are often among the largest assets on a webpage. Uncompressed images can significantly slow down loading speed and impact user experience and SEO performance.

  2. E-commerce Product Image Optimization

    E-commerce platforms such as Shopify, Amazon, and eBay require strict image standards including file size, resolution, and loading speed, which affect rankings and conversions.

  3. CMS & Upload Limits

    Platforms like WordPress and CMS systems often limit uploads (2MB–5MB), requiring compression before uploading.

  4. Mobile Upload & Sharing

    Mobile photos are often large (3MB–15MB). Compression reduces data usage and speeds up uploads.

  5. Social Media Publishing

    Platforms like Instagram, X (Twitter), Facebook, and TikTok automatically compress images. Pre-compression helps avoid quality loss from secondary compression.

  6. Compress JPG for Email & File Sharing

    Email services often limit attachments (10MB–25MB). Large images must be compressed before sending.

  7. Landing Pages & Ads

    Marketing landing pages rely heavily on images. Large files slow down loading speed and reduce conversion rates.

  8. CDN & Bandwidth Optimization

    Large images consume more CDN bandwidth. Compressing JPG files helps reduce server costs.

  9. Storage Management

    Compressing images saves storage space in cloud services like AWS S3 or OSS and local servers.

  10. API & Automation

    AI, OCR, and image processing APIs often have strict file size limits (e.g., under 1MB), requiring compression before processing.