🗜️ Nén Ảnh

Step 1: Upload Your Image

Click the dropzone or drag and drop a JPG, PNG, or WebP image. The original file size and dimensions will be displayed next to the preview.

The compressor interface — upload an image to see original size and dimensions

Step 2: Adjust Quality Settings

Use the Quality slider (10%–95%) to control the compression level:

• 80-95% — Minimal quality loss, good for photos you want to keep sharp
• 50-70% — Balanced size reduction, ideal for web use
• 10-40% — Maximum compression, smallest file size (more visible quality loss)

Step 3: Compress & Compare

Click "Compress" to process. The tool shows both original and compressed versions side-by-side, along with the exact file size and percentage saved. Click "Download" to save the optimized image.

Best Use Cases

• Website optimization — Reduce page load times by compressing hero images and galleries
• Email attachments — Stay under size limits when sending photos
• Social media uploads — Faster uploads without noticeable quality loss at 70-80%
• Storage saving — Batch-compress photo collections (process one at a time)

Pro Tips

• For photos with text or fine details, stay above 70% quality to keep text readable
• WebP format typically gives 25-35% smaller files than JPG at the same quality
• PNG compression preserves transparency but won't reduce file size as much as JPG/WebP
• Compare the before/after preview to find your personal quality threshold