Why compress images?
Oversized images are the single most common cause of slow web pages, rejected form uploads, and bloated email attachments. Compressing an image re-encodes it more efficiently — usually shaving 50–90% off the file size with little or no visible difference.
This tool lets you set a target file size (for example "under 200 KB") and automatically finds the best quality level that fits. It shows the before/after sizes for every file so you can judge the tradeoff yourself.
How it works
Drop your JPG, PNG, WebP or HEIC images above, choose a target size or quality, and press Compress. The tool progressively re-encodes each image in your browser, reducing quality and — if needed — dimensions until it hits your target.
Unlike most online converters, FileLark never uploads your files to a server. The conversion runs entirely inside your browser using modern web technology, which means it works offline once the page has loaded, there are no file size queues or daily upload limits, and your images can never be stored, scanned, or leaked — they simply never leave your device.
Tips for the best results
Photographs compress far better as JPG or WebP than as PNG — if your photo is a PNG, converting it to WebP first can cut the size by 5–10× on its own. Keep PNG for screenshots, logos and graphics with sharp edges or transparency. For web use, aim for under 200 KB for large hero images and under 50 KB for thumbnails.