Image Compressor

Introduction

Image Compressor makes it quick and simple to reduce image file sizes for the web, email, and storage while preserving visual quality. It supports single-file and bulk compression with options for lossy or lossless optimization, resizing, output format selection (JPEG, PNG, WebP, AVIF), and metadata handling. Use it to speed up websites, shrink attachments, or prepare images for mobile.

What is this tool?

The tool applies encoding and optimization techniques to reduce image bytes: recompressing JPEGs with lower quality, optimizing PNG palettes, converting to modern formats (WebP/AVIF), stripping or preserving EXIF metadata, and resizing dimensions. It can run client-side (no upload) for privacy or server-side for more aggressive formats and batch jobs.

Why use this tool?

• Faster pages: Smaller images load quicker and improve page speed and UX.
• Bandwidth & storage savings: Reduce hosting costs and mobile data usage.
• Email & uploads: Meet attachment size limits and speed transfers.
• Responsive images: Resize and generate multiple densities (1x/2x) for responsive delivery.
• Preserve quality: Balance visual fidelity and file size with adjustable settings.

How to use it

1. Drag-and-drop or upload one or more images (PNG, JPEG/JPG, WebP, GIF, HEIC where supported).
2. Choose options:
   • Mode: Lossy (recommended for photos) or Lossless (preserve exact pixels where possible).
   • Quality slider (1–100) for JPEG/WebP/AVIF.
   • Resize: enter max width/height or select common presets (e.g., 1920/1280/800 px).
   • Format: Keep original or convert to JPEG/WebP/AVIF/PNG.
   • Metadata: Keep EXIF/GPS or strip for privacy.
   • Advanced: color palette optimization for PNG, progressive JPEG, chroma subsampling options.
3. Click “Compress” and preview results side-by-side (original vs compressed) with file size and percent reduction shown.
4. Download individually or batch-download as a ZIP. Use “Apply to all” for bulk operations.

Supported formats & limits

• Input: JPEG/JPG, PNG, WebP, GIF (static), HEIC (where supported), SVG (rasterize then compress).
• Output: JPEG, PNG, WebP, AVIF (server-side for AVIF), or original format.
• Max single-file size: configurable (commonly 8–50 MB); batch size limit applies.
• Client-side processing is used where possible to avoid uploads; server-side used for advanced conversions like AVIF or heavy batch jobs.

Examples

• Input: PNG screenshot, 4.2 MB → Output: WebP (quality 80) 420 KB — 90% reduction, visually similar for web use.
• Input: JPEG photo, 3.8 MB → Output: JPEG (quality 75) 520 KB — good balance for galleries and thumbnails.

FAQ

Do you store my images?
By default, processing happens client-side in your browser and files are not uploaded. If server-side processing is required (e.g., AVIF conversion, large batch jobs), images are uploaded temporarily and deleted automatically—see your deployment’s privacy policy for retention specifics.

Will compression lower visible quality?
Lossy compression reduces bytes by discarding some image information; use the quality slider and preview to find the best trade-off. Lossless modes preserve image pixels but usually achieve smaller savings.

Is EXIF/metadata removed?
You can choose to keep or strip metadata. Stripping EXIF (especially GPS) is recommended when sharing publicly to protect privacy.

Which format should I choose?
For photos: WebP or AVIF at quality 70–85 gives best size-to-quality ratio. For screenshots/graphics with transparency: optimized PNG or WebP (lossless). For maximum compatibility: JPEG for photos, PNG for transparency. Test with the preview to decide.

Tips

• Resize before heavy compression if you only need smaller display sizes—downscaling reduces file size dramatically.
• Use higher quality for hero images, lower for thumbnails and avatars.
• Generate multiple sizes for responsive images (srcset) to serve appropriate resolutions per device.

Accessibility & UX

Provide progress indicators during batch jobs, accessible labels for controls, and an option to restore the original. Offer suggested presets (Web/Email/Print) to help non-technical users choose sensible defaults.