Image Compressor – Reduce JPG, PNG & WebP Free
Compress images instantly in your browser with full quality control. Three-step workflow: upload, adjust settings, download. Files never leave your device — 100% private, no server upload, no sign-up.
Drop images here to get started
Drag & drop JPG, PNG, or WebP images — or click to browse your files
Max 20 MB per file · Multiple files supported · Batch processing
Output Format
Best for photos & real-world images. Lossy compression with high reduction rates.
Compression Quality
Resize (Max Width)
Images narrower than this limit are not enlarged.
What is Image Compression?
Image compression reduces file size by removing redundant data or encoding it more efficiently. Lossy compression (JPEG, WebP) discards some detail invisible to the human eye. Lossless compression (PNG) preserves every pixel while reorganising data. This free tool uses the browser’s Canvas API to compress images entirely on your device — no server, no upload, no privacy risk.
How This Tool Works
Upload Images
Drag & drop or browse to select JPG, PNG, or WebP files up to 20 MB each. Multiple files are supported. You can reorder images by dragging the thumbnails. Nothing is sent to any server at any point.
Adjust Settings
Choose your output format — JPEG for photos, PNG for lossless transparency, or WebP for the best modern compression. Set quality (1–100%) and optionally cap the maximum output width. Estimated compressed sizes update in real time.
Download Results
See a full summary: total space saved and percentage reduction. Use the before & after slider to compare the original vs. compressed image. Download individual files or grab all as a single ZIP archive.
Why Compress Images for Websites?
Oversized images are the single biggest cause of slow-loading web pages. Google’s Core Web Vitals — especially Largest Contentful Paint (LCP) — penalise sites that serve unoptimised images. Compressing images before uploading them can reduce page weight by 60–80%, dramatically improving load speed, SEO rankings, and user experience.
Smaller images load faster, reducing bounce rates and keeping visitors engaged longer.
Google rewards fast sites. Optimised images improve Core Web Vitals and search ranking positions.
Serving smaller files reduces hosting bandwidth consumption, especially important for high-traffic websites.
Many email clients limit attachments to 10–25 MB. Compressing images before sending ensures reliable delivery.
Platforms like Instagram and Twitter recompress images automatically. Send optimised images to retain control.
Mobile users on slower networks benefit most from compressed images. Reduce data usage and load time significantly.
Supported Formats: JPG, PNG, WebP
This tool supports the three most widely used web image formats, each with different compression characteristics suited to different use cases.
JPEG — Best for Photos
JPEG uses lossy compression that discards subtle colour variations invisible to the human eye. Ideal for photographs, product images, and real-world scenes. Typical compression at 80% quality reduces file size by 50–70% with no visible quality loss. Does not support transparency.
PNG — Lossless & Transparent
PNG uses lossless compression, preserving every pixel. Best for logos, icons, screenshots, and images requiring a transparent background. Because all data is preserved, PNG files are typically larger than JPEG. For maximum reduction on PNG inputs, convert to WebP.
WebP — Best for the Web
WebP is Google’s modern format that supports both lossy and lossless compression. It produces files 25–35% smaller than JPEG at equivalent quality, and supports transparency like PNG. All major browsers support WebP. It’s the best all-round choice for websites.
Frequently Asked Questions
Upload your images using the drag-and-drop zone or the browse button. Select your output format (JPEG, PNG, or WebP), adjust the quality slider, and optionally cap the maximum width. Click “Compress Images” and download your files individually or as a ZIP. No sign-up or payment required.
Lossy compression (JPEG, WebP) does reduce some data, but at 70–85% quality the human eye cannot detect any difference. The before & after slider in our results view lets you compare the original and compressed versions side by side. PNG compression is lossless, so quality is always preserved exactly.
WebP is generally the best format for websites in 2024. It produces files 25–35% smaller than JPEG at the same visual quality, supports transparency like PNG, and is supported by all modern browsers including Chrome, Firefox, Safari, and Edge. Use JPEG for legacy compatibility, and PNG only when lossless transparency is required.
No. All processing happens entirely inside your browser using the HTML5 Canvas API. Your images never leave your device and are never sent to any server. This makes the tool safe to use with private, confidential, or sensitive images.
Yes. Select multiple files in the file picker or drag a batch onto the drop zone. All images are compressed using the same settings. Use the “Download All (ZIP)” button on the results page to save every compressed image in a single archive file.
For most web use 70–85% is the sweet spot — files are 40–70% smaller with no visible quality loss. For email or social media 60–75% works well. Use 90%+ only for print-quality output. Use our “Balanced (80%)” preset as a starting point and compare results using the before & after slider.