Compress an Image (Reduce Photo File Size)
Cut your photos' file size by up to 80% with no visible difference, to email them, publish them, or meet a maximum size. Free, batch, no upload.
- Up to −80%
- JPG, PNG, WebP
- Batch
- 100% private
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to reduce a photo's file size?
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Add your images
Drag one or more JPG, PNG, or WebP photos into the area.
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Choose the level
Light for maximum quality, Recommended for the best trade-off, Strong for the smallest size.
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Download
Compare the old and new size, then download your images one by one or as a ZIP.
Light, sharp images
Visible space savings
Before/after size and the percentage saved are shown for each image.
Three simple levels
No complicated settings: pick a level, compression handles the rest.
WebP or JPG conversion
Turn your PNGs into WebP or JPG for much lighter files.
Never heavier
If an image is already optimized, the original is kept rather than a heavier version.
Why compress an image?
Smartphone photos often weigh 3 to 8 MB. That's too much for an email, for a form that limits attachments to 2 MB, or for a website that needs to load fast. Compressing an image reduces its size by removing information invisible to the eye, while keeping a sharp photo.
Reduce a photo's size in MB or KB
The “Recommended” level usually divides a photo's size by 3 to 5 with no visible difference. The “Strong” level also reduces the resolution of very large images (2048 pixels max) to get down to a few hundred KB: perfect for administrative forms and listings.
Private, free compression
Your images are compressed in your browser, without being uploaded. You can process dozens of photos at once, with no sign-up or limit.
Frequently Asked Questions
Does compression reduce quality?
With the “Light” or “Recommended” level, the difference is invisible to the naked eye. The “Strong” level favors file size and may be slightly visible on fine details.
How do I get a photo under 1 MB?
Choose the “Strong” level: most smartphone photos then drop under 1 MB, often between 200 and 600 KB.
Why is my PNG barely compressed?
PNG is a lossless format. For a significant reduction, choose WebP or JPG as the output format.
Can I compress several images at once?
Yes, add as many as you want, then download them all in a ZIP archive.