How to Bulk Compress Images Instantly
Save Hours of Manual Work
If you have a folder full of 50 or 100 high-resolution photos from a recent event or photoshoot, processing them one by one is a nightmare. Traditional desktop software can be clunky, and most online tools make you wait in a queue while your files upload to a server. PhotoDiet's bulk image compressor harnesses the multi-threading power of your device's CPU to process dozens of images simultaneously, right inside your browser.
How to Compress in Batches
- Step 1: Select or drag an entire folder of images into the dropzone.
- Step 2: The tool instantly queues all valid image files.
- Step 3: Watch as your browser processes multiple images in parallel at lightning speed.
- Step 4: Download a convenient ZIP file containing all your compressed, web-ready images.
Frequently Asked Questions
Q: Is there a limit to how many images I can upload?
A: Because processing happens entirely on your local machine, the only limit is your device's RAM. Most modern laptops and phones can easily handle batches of 50 to 100 images at once without crashing.
Q: Will anyone see the images I bulk upload?
A: Absolutely not. Zero bytes of your image data are sent to our servers. The bulk compression is performed by JavaScript executing entirely within the secure sandbox of your local browser.
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