Select JPG
Choose one or more JPG files from your device.
✦ JPG IMAGES · PROCESSED LOCALLY
Compress JPG
privately in your browser.
Reduce the file size of JPG images directly in your browser without uploading them. The result can be smaller, the same size, or larger — depending on the image and its original quality.
Drop JPG files here
or choose files
JPG or JPEG files · up to 20 files · max. 75 MB per imageSelected images
Files stay on your device
Files stay on your deviceNo accountNo watermark
COMPRESS JPG
JPG compression in three steps
The quality setting controls how much detail is preserved versus how small the file becomes.
Set the quality
The quality slider is preset to 80 %. Lower values produce smaller files.
Download JPG
Download results individually or collect multiple files in a ZIP archive.
FORMAT KNOWLEDGE
What happens when you compress a JPG?
LokalPix decodes the JPG and re-encodes the pixels at the chosen quality level.
JPG
Lossy re-encoding
Compression here means another round of lossy JPG encoding. Existing artefacts are not removed.
QUALITY
Encoder setting, not a quality measure
The percentage controls the encoder. 80 % is a good compromise for most photos; below that, blocking artefacts may appear.
IMPORTANT
A smaller result is not guaranteed
The output can be smaller, the same size, or larger than the original, depending on the image content and its source compression.
FORMAT IN DEPTH
JPG compression in depth
Technical background for a deliberate quality choice.
How JPG compresses
JPEG divides the image into 8×8 pixel blocks and transforms them using the discrete cosine transform. Quantisation reduces coefficients; less important detail is discarded in the process.
When compression helps
If the source file comes from a camera or editor and was encoded at a high quality setting, re-encoding at 75–85 % can produce noticeably smaller files.
When compression does not help
If the file was already heavily compressed, the result will be similar in size or larger. Re-encoding then adds another lossy step without reducing file size.
What is lost during compression
Existing JPG artefacts remain. EXIF metadata are removed by default. The original image cannot be reconstructed exactly from the result.
FREQUENT QUESTIONS
Questions about JPG
Answers about compression, quality, and privacy.
Will my file always be smaller?
No. The result depends on image content, source compression, and the chosen quality level. LokalPix shows an honest savings badge after processing, indicating the actual percentage saved or added.
Which quality should I choose?
80 % is a practical starting point for photos. Lower it for smaller files; raise it when visible artefacts are a concern.
Are metadata preserved?
Metadata are removed by default.
Can I compress several JPG files?
Yes. Up to 20 files can be processed in one batch and downloaded individually or together as a ZIP archive.
Are resolution and aspect ratio preserved?
Yes. LokalPix does not change the pixel dimensions during compression.
PRIVACY BUILT IN
Your images belong to you.
Compression uses your browser's built-in functions. There is no image upload and no cloud storage.
Technology and data flow in detail →- ✓ Processing in your browser
- ✓ No server-side image storage
- ✓ No user account