Image Compressor
Reduce image file size online — compress JPEG, PNG, and WebP without losing visible quality.
Last updated: March 25, 2026
Used 88K+ timesWhat users say
“Compressed 50 product photos before uploading to Shopify — went from 8 MB total to under 2 MB with no visible quality loss. The side-by-side preview makes it easy to check.”
“The 80% quality slider recommendation is spot-on. My PageSpeed score jumped 12 points after switching to compressed images.”
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Buy me a coffeeWhat is Image Compressor?
Image compression reduces the file size of photos and graphics by encoding visual data more efficiently. There are two types: lossless compression (removes only metadata and redundant data, preserving every pixel exactly) and lossy compression (subtly reduces color accuracy at edges and gradients where the human eye is least sensitive, achieving much higher size savings).
This tool offers both modes. For JPEG images, the quality slider controls lossy compression — at 80% quality you typically save 60–70% file size with no perceptible quality difference. For PNG images, lossless optimization removes hidden metadata (EXIF, color profiles) and applies smarter palette encoding. All processing runs entirely in your browser using the HTML Canvas API, so your photos are never uploaded to any server.
How to Use Image Compressor
Click "Upload" or drag and drop an image (JPEG, PNG, or WebP) onto the tool
Use the quality slider to control compression level (80% is the recommended default)
Toggle "Lossless" if you need pixel-perfect output (PNG only)
Review the before/after file size and quality preview side by side
Click "Download" to save the compressed image to your device
Common Use Cases
- Reducing hero images and product photos before uploading to a website
- Optimizing images to improve Core Web Vitals (LCP) and Google PageSpeed scores
- Shrinking images before attaching to email (many providers cap at 10MB)
- Compressing screenshots and wireframes to reduce Slack/Notion storage usage
- Reducing image file sizes before uploading to social media (Twitter, LinkedIn)
- Batch-preparing images for an e-commerce product catalog
- Optimizing mobile app assets before bundling with an iOS or Android build
- Reducing image size before storing in cloud storage (S3, GCS) to cut costs
Example Input and Output
A typical JPEG at 80% quality retains virtually all visual fidelity while saving over 60% in file size:
Photo: product-hero.jpg
Dimensions: 2400 x 1600 px
Original size: 2,457 KB
Format: JPEG
EXIF data: Yes (camera model, GPS, date)Compressed size: 890 KB (−63%)
Dimensions: 2400 x 1600 px (unchanged)
Format: JPEG (quality 80)
EXIF data: Stripped
Visual difference: Imperceptible to human eyePrivacy First
All compression happens locally using the HTML Canvas API. Your photos never leave your browser — they are not sent to, stored by, or seen by our servers at any point.
Best Setting for Web
For most website images, try 80% quality with EXIF stripping. This combination typically reduces a 3MB JPEG to under 1MB with no visible quality loss — fast enough to significantly improve your Core Web Vitals score.
PNG vs JPEG
PNG compression is always lossless — it removes metadata and optimizes palette encoding without touching pixel data. JPEG compression is inherently lossy. For screenshots and logos, always use PNG. For photographs, JPEG or WebP at 75–85% quality is optimal.
Frequently Asked Questions
What quality setting should I use?
What is the difference between lossy and lossless compression?
Will compressing my image reduce its dimensions (resolution)?
Is there a file size limit?
Why should I compress images before uploading to WordPress or Shopify?
Does compression remove EXIF data (GPS, camera info)?
Should I use WebP format instead of JPEG?
How This Tool Works
The tool draws the uploaded image onto an off-screen HTML Canvas element using the CanvasRenderingContext2D API. To compress, it calls canvas.toBlob() with the target MIME type (image/jpeg or image/webp) and the quality parameter (0–1). The browser's built-in codec applies compression at the hardware-accelerated level. For PNG lossless mode, it re-encodes with stripped EXIF by drawing the image through Canvas without preserving metadata. The resulting Blob is then offered as a download via a temporary Object URL.
Technical Stack
Image Workflow
Compress, convert, resize, crop, and prepare assets for websites and social platforms in one pass.