No uploads.
Files stay in your folder. There is no queue, no progress bar tied to the internet.
Compressy is a fast, offline image compressor for Windows. Shrink images without uploading them to a server, creating an account, or giving your files to a cloud service.
Compressy does the work locally on your PC. Just select your images, compress them, and keep going.
Files stay in your folder. There is no queue, no progress bar tied to the internet.
Compression runs on your machine — mozjpeg, oxipng — not on someone else's server.
No sign-in, no dashboard, no email wall between you and a smaller file.
Start, finish, and export in the same window. Your computer does the work.
Compressy is designed to make compression feel like a normal Windows utility — not another website you have to upload files to. Compress individual images or work through a whole folder without sending anything over the internet.
Choose a folder or select images in. The file list shows size, type, and dimensions — with checkboxes for exactly what you want to compress.
Set quality, engine, and output format. Run it locally — 2, 4, or 8 threads — and watch per-file savings appear on the right.
Export a CSV, open the folder, or overwrite in place with a .bak backup. No upload step in between.
JPEG, PNG, WebP, AVIF and more. Compressy handles common image formats while giving you control over how aggressively your images are compressed.
Photographs and exports. Quality slider 40–95 with balanced, fast, and maximum engines.
Screenshots, UI, and transparency. Lossless toggle keeps PNG/WebP bit-exact when you need it.
Smaller web delivery. Keep original or convert — WebP as output for the whole batch.
Maximum density when size matters most. AVIF output without leaving the app.
There is no upload or download step between you and your files. Your computer does the work — so large folders don't stall behind a server queue.
No transfer · Threads 2 / 4 / 8Compressy doesn't need an internet connection to compress, and your files don't need to pass through someone else's server.
Local processing · No cloud requiredNo account. No dashboard. No subscription. No unnecessary settings. Just a focused Windows app for making images smaller.
Install once. Use offline. Resize, rename, and strip metadata in the same pass — then export a CSV of what you saved.