ConvertFast Team ·
Image Compress — Reduce Photo File Size for Web & Email
Compress images to make them faster to upload, share, or host on websites. Choose the right balance of quality and compression to suit your needs.
Which image format should you use?
JPG is usually the smallest practical choice for photographs. PNG is useful for graphics that need transparency or sharp flat-color edges. WebP can reduce file size for many web images while supporting both photographic and transparent content. Keep the original file until you have checked the compressed result.
How to compress images
- Open Compress Images.
- Upload one or more images (batch supported).
- Choose output format (JPG, PNG, WebP) and quality settings.
- Click "Start Conversion" and download the compressed images.
Suggested settings
- Photographs: JPG at 70–85% quality.
- Logos/graphics: PNG or lossless WebP.
- Batch compress when preparing many images for web galleries.
Tips
- For photos, JPG at 70–85% often provides a good trade-off between quality and size.
- For graphics with flat colors, PNG or lossless WebP may be better.
- Use the Image Converter to change formats before compressing.
How should you verify a compressed image?
Compare the output at its intended display size, not only while zoomed in. Look at text, faces, gradients, transparent edges, and areas with fine detail. Confirm that the pixel dimensions and format match the destination’s requirements. If artifacts are visible, raise the quality setting or return to the original source.
Will compression reduce image quality?
Lossy compression reduces file size by discarding some image data. The effect depends on the source image, output format, and selected quality. Lossless settings preserve image data but generally produce larger files.
Related tools
- Image Converter — change formats before compressing
- Images to PDF — bundle images into a single PDF
- OCR PDF — make text in a scanned PDF searchable