Published tools

OpenFileTools

Browse browser-local PDF, image, media, file and developer workflows plus source-backed Trade Studio tools. Retired experiments are not kept public just to increase page count.

Showing 11 of 232 published tools.

Photography & Print

Inspect print resolution, photo quality, proof sheets, comparisons, histograms, and passport-ready output.

Image DPI CheckerInspect embedded JPG or PNG resolution metadata and calculate real print sizes from exact pixel dimensions without uploading the photo.Change Image DPIChange JPEG or PNG DPI metadata without resizing or adding pixels, then download the same encoded image data with updated print-resolution metadata.Image Color Profile CheckerInspect JPEG, PNG, or WebP color-profile evidence, embedded ICC metadata, sRGB declarations, and RGB/CMYK-family structure locally before print or marketplace export.Print Size CalculatorConvert image pixels and target PPI into physical print dimensions and compare common photo sizes locally.Print Quality CheckerCheck the effective PPI of a photo at a chosen print size and see maximum recommended print dimensions at 300, 240, and 150 PPI.Photo Contact SheetArrange up to 40 photos into a clean A4 or Letter contact-sheet PDF with filenames, all generated locally.Photographer Proof SheetCreate a client-ready multi-page photo proof PDF with filenames, format/file-size notes, and configurable thumbnail density.Image HistogramInspect RGB and luminance distributions, mean brightness, and near-black/near-white clipping from a local photo sample.Sharpness CheckerEstimate local edge detail, shadow clipping, highlight clipping, and average luminance without sending the photo to a server.Image ComparisonCompare two local images with a reveal slider, exact source facts, quantitative pixel-difference statistics, and a downloadable difference heatmap when dimensions match.Passport Photo MakerManually align a US 2×2 passport photo with official composition guides, then export a 600×600 JPG or six-photo 4×6 print sheet.