What Is FitPhotoKB
FitPhotoKB is a free image compression tool built for anyone who needs to reduce a photo to an exact file size — including passport applications, government portals, job forms, visa submissions, and AI workflows. All compression runs entirely in your browser using professional-grade encoders — your image never leaves your device. No account, no server, no uploads. Built and maintained independently, with privacy as the core design principle.
Why It Was Built
This tool was built after repeatedly struggling to compress photos to exact limits for government portal uploads — every existing tool either uploaded your image to a server or gave no control over the exact output size. FitPhotoKB solves that specific problem entirely in the browser, with no data leaving your device at any point.
How It Works
The tool is completely free with no usage limits and no account required. It uses mozjpeg for JPEG compression and oxipng for lossless PNG optimisation — both are professional-grade open source encoders. WebP and AVIF output use the browser's built-in encoders, and HEIC input is supported on Chrome and Safari.
Supported Formats
FitPhotoKB supports JPEG, PNG, WebP, AVIF, and HEIC input formats, outputs to all major formats, and processes up to 20 images at once. It works on any device with a modern browser — no installation required.