Two ways to compress
- By quality: choose a quality from 10–95% and the image is saved again. For photos, 70–80% often looks almost the same while saving a lot of space.
- To a target size: enter a limit such as 200 KB and the tool finds the best quality that fits. If even the lowest quality is too big, it also shrinks the dimensions step by step.
Reducing the pixel dimensions saves the most. A phone photo of about 4,000 × 3,000 pixels resized to a 1,920 px long side still looks sharp on screen but is a fraction of the size.
Meeting upload limits
Job applications, government forms in Korea and online stores often say “photo under 200 KB” or “under 1 MB”. Choose “To a target size” and type the number, or tap one of the buttons (100 KB to 2 MB). This tool counts 1 KB as 1,024 bytes; if a site counts 1 KB as 1,000 bytes the file may be slightly over, so leave a little margin.
Formats
- JPG: the safest choice for photos and opens everywhere. Transparent areas become white.
- WebP: smaller than JPG at the same quality and supports transparency. With “Auto”, PNG images are saved as WebP to keep transparency (JPG if your browser cannot save WebP).
- PNG is lossless, so lowering quality does not shrink it; it is converted to JPG or WebP instead.
Play it safe
- Keep your originals. Enlarging a compressed photo does not bring the detail back.
- Camera details (EXIF) such as device and location are not kept when the image is re-saved.
- Files are processed only in this browser and never sent to a server.
FAQ
How do I get a photo under 200 KB?
Choose “To a target size”, enter 200 or tap the 200 KB button, then press Compress. It saves the best quality that fits.
What quality should I use?
For viewing on screens, 70–80% is usually enough. For printing or zooming in, use 85% or more.
My PNG got bigger.
PNG is lossless, so re-saving it may not shrink it. This tool keeps the original if the result would be larger, and “Auto” converts PNG to WebP to make it smaller.