Image converters · OnDevice
Compress image to a target size
Pick a size cap and drop JPEG, PNG, WebP, AVIF, or TIFF files. The page searches JPEG quality (and resizes only if needed) until each file fits. Work stays on this device.
No upload. Files never leave your device.
Drop images here
JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF are welcome. Multiple files are fine. Output is always JPEG so the size cap can be met.
Results
No files yet. Nothing is sent to a server when you add them.
Frequently asked questions
Does this upload my photos?
No. Compression runs in a Web Worker on your device. Nothing is sent to a conversion server.
How does it hit the size cap?
The image is decoded, then encoded as JPEG while the quality setting is searched so the file stays under your cap and as sharp as possible. If even a low-quality JPEG is still too big, the image is resized and the search is tried again.
Why is the output always JPEG?
JPEG is the practical format when you need a small file for a form, email, or size-limited upload. PNG is often larger than the cap you picked.
Which sizes can I pick?
Presets are 50 KB, 100 KB, 200 KB, 500 KB, and 1 MB. You can also type a custom cap in kilobytes.
Can I compress many files at once?
Yes. Add a batch, compress, then download a ZIP.
Is there a file size limit?
Input files larger than 40 MB are refused. The cap applies to the output, not the original.