Select your images
Choose multiple JPG, PNG or WebP files or drag them into the upload area.
FREE ONLINE IMAGE TOOL
Compress images.
Keep them yours.
Reduce image file sizes, process multiple photos together, and download them individually or as one ZIP. Your images stay in your browser.
No image upload
Batch compression
ZIP download
Browser-side processingImages are not sent to our server
Control your outputQuality, format and dimensions
Free to useNo account or watermark
STEP 01
Compression settings
Set how you want your images optimized.
82%
Smaller fileHigher quality
KB max
When a target is set, the tool tries to get each output below it. Exact targets cannot be guaranteed for every image or format.
Resize large images
Optional — keep the original dimensions when disabled.
px
px
Aspect ratio is preserved. Smaller images will not be enlarged.
STEP 02
Private
Add images
Select several images at once or drop them here.
Drop your images here
or select multiple files from your device
JPG, PNG and WebP · Up to 25 MB per file0 images0 B total
Preparing images…0%
Compression complete
HOW IT WORKS
Compress multiple images in three steps
No account, installation or image upload required.
Choose compression settings
Adjust quality, output format, optional maximum file size and image dimensions.
Download your results
Save a single compressed image or package all completed images into a ZIP in your browser.
Your images are not uploaded
The tool reads selected files in your browser and uses the Canvas API to resize and compress them. ZIP creation also happens locally. No image-processing upload endpoint or image storage is used by this page. Your browser still loads the website and separately configured third-party services such as analytics or advertising.
HELP & FAQ
Image compressor FAQs
What to know before you compress your files.
Can I compress multiple images at once?
Yes. Select multiple JPG, PNG or WebP images, choose your settings and select Compress all images. The browser processes files one at a time to help limit memory use.
Are my images uploaded to Infovistar?
No. Selected image data is processed locally in your browser and is not sent to an image-processing endpoint by this tool. Avoid using a shared or untrusted device for sensitive images.
Which output format should I choose?
WebP can provide smaller files with good visual quality in many cases. JPEG works well for photographs. PNG is lossless and supports transparency, but its output may be larger and the quality slider does not control PNG compression.
Will every image reach my target KB size?
No. The tool attempts to meet the target with supported lossy formats. Some images, dimensions, browser encoder limits or lossless PNG output may prevent the target from being reached. Check the result status before submitting the file elsewhere.
Does compression reduce image dimensions?
Only when Resize large images is enabled and the image is larger than the maximum width or height you entered. The aspect ratio is preserved and images are not enlarged.
Why is a PNG file sometimes not smaller?
PNG is a lossless format and browser canvas encoders do not offer a universal PNG quality control. For photographs, choosing WebP or JPEG may reduce file size much more, but JPEG does not preserve transparency.
Free online image compressor for multiple images
Use Infovistar's free image compressor to reduce file sizes without sending your pictures to an image-processing server. Add multiple JPG, PNG or WebP files, change quality and output format, optionally resize large images, and review the savings before downloading. The tool runs in your browser, making it useful for website images, email attachments, online forms and everyday photo optimization.
Compression results depend on the original image, file type, image dimensions, browser encoder and selected quality. Keep an original copy when image fidelity matters, and always check any file-size or dimension requirements from the website where you plan to submit the image.