Batch Image Compressor
Compress a whole folder of images with one setting and download them all together as a ZIP.
Drop your files here
or click to browse
Processed locally — never uploaded
How to use batch image compressor
- 1Add a whole folder
Drag files or a folder onto the panel. You will see a count and the combined size before anything is processed.
- 2Pick one setting
Choose the quality and format that suits the batch. Optionally cap the long edge so oversized camera photos come down too.
- 3Download the ZIP
Every file is processed in sequence and packed into a single archive keeping its original filename.
About batch image compressor
Batch image compressor handles a whole folder at a time. Add fifty photographs, pick one quality setting, and get fifty compressed files back in a single ZIP.
This is the version worth using when you are preparing a website, resizing a product catalogue, or trying to get a folder of photos under an email attachment limit. Doing those one at a time is the tedious part, and doing them with three slightly different settings gives you an inconsistent result that is hard to correct later.
Applying a single rule to the whole batch is deliberate. One setting across every file is what makes the output consistent, which matters when the images are going to sit side by side on a page or run together in a slideshow. If one picture genuinely needs different treatment, run it on its own with the single image compressor afterwards.
Everything happens locally, so there is no upload step. That is why a batch of two hundred images will not hit a server limit, and why the tool keeps working on a slow or intermittent connection.
Frequently asked questions
How many images can I add at once?
There is no fixed count limit, because nothing is uploaded. The practical ceiling is how much memory your device has free while processing. A few hundred images at once is usually fine on a modern phone or laptop.
Do the filenames stay the same?
Yes. Each compressed file keeps its original name, so a structure of filenames survives the round trip. If you change the output format, the extension is updated to match.
How is this different from the single image compressor?
It is the same engine with one setting applied to many files and a ZIP at the end. That saves repeating yourself and keeps quality consistent across the whole set.
Can I mix formats in one batch?
Yes. Drop in a mix of JPG, PNG and WebP. Choosing "keep original format" compresses each in its own format, while choosing a specific format converts the entire batch to it.
What happens if I close the tab halfway through?
The processing stops, because it was running in your browser rather than on our server. Add fewer files, or simply leave the tab open until the ZIP appears.
Is there a watermark or a file size limit?
Neither. Nothing is added to your images, and there is no upload ceiling because no upload ever happens.
Related tools
Private by design. Your files are processed on this device and are never uploaded to the 1xmobcas.com server. Use batch image compressor offline with total confidence.