BoltDeckNeed to send photos by email, upload them to a form with a size limit, or speed up your website? This JPG compressor shrinks JPEG photos in seconds while keeping them looking sharp. Pick a quality, or set a target like “under 500 KB” and let it find the best result for each photo.
Compress one photo or a whole batch, resize at the same time if you like, and download everything as a ZIP. It all happens in your browser, so your photos never leave your device. No sign-up, no watermark.
Got PNG, WebP or HEIC files? The full image compressor handles those too.
How to use it
- 1Drop your JPG photos onto the box above, or tap "Choose images". JPG output is already selected.
- 2Pick a quality (80% is a good start), or switch to "Target size" and choose a limit like 500 KB.
- 3Each photo is compressed straight away — check how much smaller it got, then download them one by one or as a ZIP file.
🛡 Your files stay on your device
Everything happens right here in your browser. Nothing you type or upload is sent to a server, stored or seen by anyone — not even us.
How it works — and how to check it yourselfRead our privacy policy
Questions and answers
What quality should I use for JPG?
75–85% looks the same as the original for almost every photo and is often a half to a tenth of the size. Go lower only if the file must be very small — below about 60% you may start to see blocky edges.
Why is my JPG so big in the first place?
Phones and cameras save photos at very high quality and full resolution, so a single picture can be 4–10 MB. That's more than screens, email and websites need.
Can I get it under a specific size, like 1 MB?
Yes. Choose "Target size" and pick the limit. BoltDeck finds the best quality that fits for each photo, and makes it slightly smaller if needed.
Does compressing a JPG again make it worse?
A little each time, so it's best to compress from the original photo rather than from an already-compressed copy.
Are my photos uploaded?
No. Compression happens in your own browser, on your device. Nothing is sent to BoltDeck or anyone else.