Drop files here, or click to browse
Drop one or many images · automatic bulk mode for multiple files
Bulk supported. Drop multiple files and they'll be processed in a queue with a single ZIP download. Same settings apply to every file.
How to use
01
Drop your images
Drag one or many JPG, PNG, or WEBP files onto the dropzone, up to 50 MB each. Single files show a preview card with the file name and its current size.
02
Pick format, quality, and target size
Choose an export format (WEBP, JPG, PNG, or keep the original), select a quality preset or fine-tune the slider, then set the target max size anywhere from 0.1 to 10 MB.
03
Compress and download
Hit the Compress button. A single file downloads directly with a compressed- prefix, while multiple files arrive together as compressed-images.zip, processed in a web worker so the page stays responsive.
Why Image Compressor
- Quality presets (High / Medium / Low) plus a fine-tune slider.
- Export to any format: WEBP, JPG, PNG, or keep the original.
- Before/after preview with exact size savings.
- 100% client-side. Your images never leave your device.
Common questions
How does this image compressor decide how much to squeeze?
It combines your quality setting with the target max size you set. The underlying library re-encodes the file at your chosen quality, then keeps reducing until the output fits under the size cap. If your cap is generous, quality alone decides the result.
Can I compress photos without uploading them anywhere?
Yes. Compression runs on your own machine using the browser-image-compression library inside a web worker. Your photos never touch a server, which also means there's no upload wait before processing starts.
What does the target max size slider actually control when compressing?
It sets a hard ceiling between 0.1 and 10 MB for each output file. The default is 1 MB, a comfortable weight for web pages and email attachments. The tool iterates internally until the result comes in under that number.
Does compression ever change my image dimensions?
Only in one case: if the longer edge exceeds 4096 pixels, the tool scales it down to 4096. A standard 4032x3024 phone photo squeaks under that cap, so its dimensions stay untouched.
Is WEBP the best format to compress into?
For most photos, yes. WEBP usually produces smaller files than JPG at similar visual quality, and every modern browser displays it. Stick with PNG output only when you need lossless graphics or transparency.
Why reduce image size online instead of opening a desktop editor?
Speed, mostly. To reduce image size online here, you drop a file, press one button, and you're done, with no app launch or export dialog. For batch jobs the gap widens, since the ZIP output packages everything automatically.
How many pictures can the compressor handle in one batch?
There's no fixed count. Each file can be up to 50 MB, and batches download as a single compressed-images.zip archive. Very large batches just take longer, since everything is processed on your own hardware.
What's the difference between the quality presets and the fine-tune slider for compression?
The High, Medium, and Low presets jump to sensible quality values, while the slider lets you land anywhere in between. Lower values mean smaller files with more visible artifacts, so nudge it until you find the trade-off you can live with.