Compress images without losing quality.
OIMG uses state-of-the-art image compression techniques to reduce file size with minimal quality drop.
Open effortlessly
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Remain in control
OIMG provides you with Pixel Match Percentage, MS-SSIM, and SSIMULACRA 2 in real time — so you can proactively set optimization thresholds, instead of worrying about unexpected quality drops.
Find the sweet spot
Navigate around the size vs. quality trade-off by visualizing quality metrics and compression efficiency on a graph.
Compatibility? No problem.
Convert back to JPG or PNG on demand with one click (for example, when uploading to websites with limited format support)!
Built for speed
OIMG is written in Rust for speed and memory safety, and utilizes multithreading and SIMD optimizations so that you can make the most of your time.
Private by design
OIMG makes zero network calls. All data stays local by default. No opting out, no BS.
Free and Open Source
OIMG is free for personal and academic use forever, and is open sourced under GPLv3 license. Please contact [email protected] to discuss custom license arrangements.