Compress your images and SVGs without leaving your browser
Convert to JPEG, PNG, WebP, GIF, BMP or clean SVG markup locally. Local Optimizer keeps the workflow fast, private and ready for batch jobs.
Privacy first, by design
No upload
Files are processed locally in your browser and never sent to a server.
Private and GDPR-friendly
Nothing leaves your device, and the site is built to minimize data collection.
Fast and offline-ready
Once loaded, the converter keeps working even without a network connection.
Drag & drop your files here
or click to browse your folders
JPEG, PNG, WebP, GIF, BMP and SVG
Browse filesFrequently asked questions
Why use a local image compressor?⌄
Unlike classic online tools, Local Optimizer processes your files directly in your browser using the HTML5 Canvas API. Your images are never uploaded to a server: that means total privacy and maximum speed, since processing does not depend on your internet connection. You can even use the tool offline once the page has loaded.
Which formats are supported?⌄
Local Optimizer accepts JPEG, PNG and WebP images as input, as well as SVG vector files. Images can be converted to JPEG, PNG or WebP with a quality setting from 10% to 100%. SVG files are minified: comments, editor metadata and unnecessary whitespace are removed without changing the visual output.
Does compression degrade my images?⌄
JPEG and WebP use lossy compression: the lower the quality you pick, the smaller the file, at the cost of visual detail. A quality of 75–85% usually offers an excellent trade-off that is often imperceptible to the naked eye. PNG remains lossless. Try several settings: the comparison table instantly shows how much space you saved.
Is there a limit on file size or count?⌄
No server-imposed limits, because there is no server! The only limit is your device's memory. You can process several files at once and download them individually or as a single ZIP archive.