PDF File Inspector

What this PDF inspector reports in seconds: Drop a PDF up to 50 MB on 09/22/2026 and get instant header version like %PDF-1.7, linearized yes or no, binary marker present or absent, Size object count, leading garbage check, and file size in kilobytes via local byte slices. The engine reads bytes 0 to 1024 for the header, scans 2 KB tail for /Size and /Root, tests /Linearized flag, decodes with TextDecoder and reports $0 results without any cloud upload or PDF software install needed.

Why header accuracy protects USA document dollars: A missing %PDF header on a $2,400 Austin exhibit can signal truncated upload that triggers $4,500 clerk rejection and $1,200 rework in Chicago where document management pipelines ingest $6,000 bulk scans nightly and one bad version tag stalls OCR queues. Miami teams serving $1,100 linearized PDFs save $900 bandwidth when fast-web-view is confirmed before $2,200 publisher distribution, while Denver forensic labs diagnosing $700 corrupted files waste $800 lab hours if binary markers absent due to text-mode transfer. Seattle engineers billing $5,500 for invoice generation need object counts to confirm licensed PDF software output before client delivery.

Real inspections with real budgets on 09/22/2026: Austin litigators checking $2,400 exhibits dated 09/22/2026 confirm clean %PDF header and Size 245 before e-filing to avoid rejection. Chicago QA verifying $6,000 bulk scans flags a file with garbage start not found for re-scan saving $2,400 OCR credits. Miami clerks auditing $1,100 fast-view PDFs confirm Linearized yes before $1,400 CDN upload for event programs. Denver trainees inspecting $700 suspect files note Binary marker absent indicating FTP ASCII corruption, while Seattle engineers validating $5,500 invoices compare object counts 180 versus expected 182 to catch truncated pages. New York publishers reviewing $2,200 manuscripts verify version 1.4 for press compatibility.

Tips for reliable byte inspection: Always confirm header shows %PDF-1.x not not found, since not found means the file is not a PDF or is zero bytes and risks $2,400 filing failure. Check leading garbage reads clean %PDF header; if it shows gibberish prefix, re-export from the source PDF software instead of re-uploading. Use Size marker around 200 to 500 for typical 10-page reports; counts like 0 signal a truncated Size dict that may hide $1,100 linearized flag loss. Compare file size kilobytes against expected scan DPI where 300 dpi 20-page color near 15 MB on 09/22/2026.

Privacy and offline handling: All byte reading runs inside your browser for $0 on 09/22/2026 with no file, header, or trailer sent to any server. The 50 MB window covers most exhibits while keeping memory safe on mobile, and results expire when you close the tab. This local model satisfies legal compliance chain-of-custody and document management retention without vendor exposure, keeping $2,400 exhibits and $5,500 invoices resident on your device.