About

ImageToKB is a set of image tools that run entirely in your browser: resize a photo to fit an upload limit, remove hidden metadata such as GPS location, turn a signature photo into a transparent PNG, and combine images into a PDF. Nothing is uploaded.

How it was tested

• Size search: tested against a model of JPEG sizes, to check the result is always under the limit with the highest quality that fits.
• Metadata removal: sample photos with EXIF, GPS, camera details, XMP and PNG text were cleaned and then decoded with ImageSharp, an independent .NET image library: same pixels, no metadata left (except a rotation flag where a photo needs it).
• PDFs: opened with PDFsharp, an independent .NET PDF library, to check every page, its size and its image.

Your files stay on your device: everything runs in this browser tab and nothing is uploaded.