Resize Image
Resize images by dimensions or percentage. Supports JPG, PNG, WEBP, BMP, and GIF.
Compress Image
Reduce image file size without losing quality. Supports JPG, PNG, and WEBP. Free, no signup, up to 200MB.
3 free operations remaining today
Drop your image here
Compress JPG, PNG, or WEBP — up to 200 MB
Browse files
How to Compress an Image
Smart PDF Lab compresses images in three steps with quality you can control.
- 1
Upload your image.
Drop your JPG, PNG, or WEBP file or click Browse files to upload images up to 200MB.
- 2
Choose your compression level.
Select between lossless, balanced, or maximum compression based on use case.
- 3
Download the compressed image.
Save your optimized file directly to your device.
Why Compress Images With Smart PDF Lab
Smart PDF Lab reduces image file size for faster website loading, smaller email attachments, and more efficient storage. Three calibrated compression modes give predictable output for different use cases. Lossless compression cuts file size without any visible quality change.
Balanced compression halves typical file sizes with imperceptible quality difference. Maximum compression produces the smallest possible file for upload-restricted forms. JPG, PNG, and WEBP all supported. No signup, no watermark.
When to Use Each Compression Mode
Each mode targets a specific use case:
- Lossless mode — Use for product photography, archival originals, and images that need editing later.
- Balanced mode — Use for websites, blogs, social media uploads, and email attachments.
- Maximum mode — Use for forms with strict upload limits, mobile-optimized galleries, and thumbnails.
- PNG handling — Lossless mode preserves transparency in all PNG files.
- JPG handling — All modes support adjustable quality with predictable output.
- WEBP support — Modern format compresses smaller than JPG at equivalent quality.
Frequently Asked Questions
Will compression affect my image quality?
Lossless mode preserves every detail. Balanced mode reduces quality slightly in ways most people cannot see. Maximum mode trades visible quality for the smallest possible file size.
What file formats are supported?
Smart PDF Lab compresses JPG, JPEG, PNG, and WEBP images. Each format uses appropriate compression for its structure.
Does the compressor preserve PNG transparency?
Yes. Lossless and balanced modes preserve PNG transparency. Maximum mode may convert transparent PNGs to flat backgrounds for smaller file size.