Photo privacy guide
How to compress images without uploading them
Many image compressors upload files to a server, but browser-based tools can reduce image size locally for supported formats.
What local image compression means
Local compression means the browser loads the image, draws it to a canvas and exports a new compressed copy using standard Web APIs.
For supported operations, the image does not need to leave your device.
How to get a smaller file
- Convert JPG or PNG to WEBP for web sharing
- Lower quality for JPG or WEBP
- Resize large images before sharing
- Use 1600px or 1920px width for many web workflows
Why PNG can be difficult
PNG is lossless, so exporting as PNG may not reduce file size much. For photos, converting to WEBP may create a smaller file.
For graphics or screenshots, results depend on the image content and browser encoding.
When not to compress too much
Avoid heavy compression for printing, professional photography, archival copies or important documents where detail matters.
A compressed sharing copy is useful, but the original file should be kept separately when quality matters.
Try ExifSafe
Compress JPG, PNG and WEBP locally with ExifSafe.