01
Set the target size
Select a standard KB/MB preset, or open a size guide for any custom limit from 1KB to 20MB.
Free Image Compressor
A fast, private online image compressor. Shrink photos to any target file size from 1KB to 20MB for portals, forms, or email - in batches, and 100% locally in your browser.
Compress images to 2MB or less
Output is optimized JPG. Transparent areas are placed on white.
Drop images here, or click to choose files
Processed locally in your browser · Zero server uploads
SupportsJPEG, PNG, WebP, AVIF, HEIC, GIF, BMP, TIFF
TargetOptimized JPG compressed to ≤ 2MB
Rate this tool
(0 ratings)
Client-Side Architecture
What is Free Image Compressor?
Free Image Compressor is a private, in-browser tool that shrinks photos and graphics to any target file size you choose. Unlike cloud services that upload your files to a remote server, it decodes, re-encodes and resizes every picture directly on your device, so your photos never leave your computer or phone.
Batch Image Compressor WorkflowAny Target From 1KB to 20MB
Pick a target size, drop a batch in, and every file is reduced to just under the limit on your own device - then download them one by one or all at once as a single ZIP.
Zero Uploads
100% Client-Side Image Compressor
Your images never leave your computer or phone. Files are decoded and optimized directly in local browser memory, keeping passport scans, ID photos and private documents strictly confidential.
Shared Target
Fast Batch Compression
Compress multiple photos or whole folders at once. Drop a batch in to apply one shared limit, switch targets to re-compress everything instantly, and download files individually or as a single ZIP.
1KB - 20MB
Precise Target Sizes
Hit the exact upload limit any web portal asks for. The image compressor ships one-click presets for 20KB, 50KB, 100KB, 200KB, 500KB, 1MB and 2MB, plus custom targets up to 20MB for online forms, exams and email.
Learn how our in-browser image compressor balances JPEG quality and dimensions in our guide on How the Image Compressor works.
How to use this free image compressor
Reduce your photos to a target size in three easy steps, entirely in your browser:
02
Add images to compress
Drop a single photo or an entire batch. Processing begins locally, with zero server uploads.
03
Check and download
Review the output file sizes and any dimension changes, then save JPG files individually or as a ZIP.
Supported inputs and output
The image compressor works on raw pixels in your browser, turning any supported graphics format into an optimized JPG.
Accepted Inputs
Decoded locally inside your browser
- JPG
- PNG
- WebP
- GIF
- BMP
- AVIF
- SVG
HEIC from an iPhone only decodes natively in Safari. On Chrome, Firefox or Edge, run it through the HEIC to JPG converter first - that step is local too - then compress the JPG here.
Output Format
One target format, tuned to your size limit
- JPGLossy · No transparency
Universally accepted by upload forms, exam portals and email clients. Quality is chosen per image, as high as the size limit allows.
- PXDimensions · Reduced only if needed
Pixel dimensions stay untouched whenever quality alone can reach the target. Tight limits on large photos trigger progressive downscaling.
- ZIPBatch · All results together
Every completed file in the batch is packed into a single ZIP archive, assembled in browser memory rather than on a server.
- EXIFMetadata · Stripped
Re-encoding from raw pixels drops EXIF, GPS, IPTC and XMP — useful before sending a photo to a portal you do not control.
Which target size should you choose?
The image compressor accepts any target you need. Follow your destination portal’s stated limit, or use these recommended ranges:
20-50KB
Strict forms
Legacy portals, signatures and tiny profile images. Expect visible detail loss on large photos.
100-200KB
Common uploads
A practical range for application photos, web forms and document portals.
300-500KB
Balanced quality
Useful when a portal allows more detail or the image contains text and fine edges.
1-2MB
Email and sharing
Reduces large camera images while retaining more resolution for normal viewing.
How this online image compressor hits your limit
The budget picks the size first
Your limit decides how many pixels it can afford at a sensible bits-per-pixel. Squeezing a 12MP photo into 100KB looks far worse than spending that 100KB on a 1MP version of it.
MozJPEG buys back the quality
MozJPEG needs 25-30% fewer bytes than standard encoders for the same picture, and that saving is spent on a higher quality setting rather than a smaller file.
The fallback is honest
If even the smallest usable output stays above the target, the result area says so and hands you that file rather than claiming success.
Need a smaller file without switching to JPG? Use the Image Converter to re-encode into WebP or AVIF instead - both preserve transparency and are significantly smaller than PNG at the same visual quality.
Compression stays on your device
Every quality search, every dimension recalculation and the ZIP archive itself are produced strictly inside this browser tab. Open your browser’s Network panel while the image compressor runs: you will see zero image uploads. Speed and practical batch size depend only on your device’s memory.
Popular target-size guides
Every common upload limit has its own dedicated image compressor page, pre-set and ready to use. Or pick any custom target in the tool above.
Continue with another image tool
After checking an image, choose a tool for the change you need. Each tool has a different purpose.
Image Format Converter
Change the image file format, such as PNG to JPG or WebP. This is different from converting pixels to print units.
Explore tool
Image Resizer and Social Media Sizes
Change pixel width and height for a website, print layout or social media preset. Enlarging an image does not restore missing detail.
Explore tool
Metadata Remover
Need to strip or edit EXIF before sharing? Open Metadata Remover to remove GPS, camera data and other hidden fields.
Explore tool
Image Size Finder
Check pixel width, height, megapixels and aspect ratio instantly for one image or a full batch.
Explore tool
Free image compressor FAQ
Does this image compressor produce an exact file size?
It targets a result at or below the maximum you select, and avoids padding the file just to hit an exact byte count.
Why can image dimensions change during compression?
The tool first searches for the highest JPEG quality that fits your target. If quality alone is not enough, it progressively scales down pixel dimensions so the photo stays clean rather than blocky.
What happens to transparent PNG or WebP files?
The output is an optimized JPG. Because JPEG has no alpha channel, transparent areas are rendered on a white background.
Can I compress multiple images at once?
Yes. The image compressor applies your target to every file at once. Download the results individually, or export the whole batch as a single ZIP archive.
Are my images uploaded to a server?
No. This image compressor decodes, resizes and encodes files entirely inside your browser. Your photos are never sent to an external server or to cloud storage.
Which input formats are supported?
Anything your browser can decode: JPG, PNG, WebP, GIF, BMP, AVIF and SVG. iPhone HEIC photos decode natively only in Safari, so on other browsers convert them to JPG with the Image Converter first.
Is EXIF and GPS metadata kept?
No. Re-encoding from raw pixels strips EXIF, GPS, IPTC and XMP, which protects your location data and shaves a little more off the file size.
What if the target size cannot be reached?
When even the smallest usable output stays above your limit, the image compressor says so plainly and hands you that file rather than claiming success.
Free & Private In-Browser Tool
Ready to Use Our Free Image Compressor?
Batch compress photos to any KB or MB limit right in your browser. 100% private, zero uploads, no watermarks.