PDF DPI Checker

The PDF DPI checker analyzes a PDF's raster content to determine the actual image density in dots per inch and compares it to a user-specified target. It focuses on print-quality constraints, helping prevent soft images or pixelation by catching low-DPI assets during asset review or production workflows.
Conceptually, the tool reads embedded image metadata when available and samples raster regions to estimate DPI for each page or element. It then calculates the gap to the target and flags assets that fall short or exceed the requirement, offering actionable guidance for re-sampling, re-export, or rescaling.
Who benefits: designers preparing PDFs for print, production houses validating client deliverables, QA teams ensuring compliance with job specs, and publishers seeking consistent image sharpness across chapters and ads. Users can integrate the results into proofs, preflight checklists, or batch packaging.
Unique value: fast per-element DPI reporting, batch-ready exports, and clear pass/fail criteria without addressing color management or compression quality. Core features include per-image DPI computation, threshold-based alerts, and concise, exportable results suitable for proofs, press-ready packages, or QA audits.