Disclosure ( Each row inspects a blank public government PDF form ( Happy to answer any questions about the extraction script, PDF submitted by \/u\/mcsno <\/a> [self-promotion]<\/code> per Rule 1):<\/strong> I build JustFill<\/a>, a browser PDF form filler and Excel-to-PDF batch mail-merge<\/a> tool. While debugging why official government PDFs filled in Chrome or macOS Preview frequently open blank in Windows Adobe Acrobat\u2014or block packet merging\u2014we ran a programmatic structural inspection across 137 federal, state, and international government form entries and released the full table and raw CSV under CC BY 4.0<\/strong> (no login or email gate).<\/p>\nDataset Access (CC BY 4.0, Direct Links)<\/h3>\n
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137 rows \u00d7 26 columns<\/code>):<\/strong> https:\/\/justfill.app\/data\/justfill-government-forms-fillability-2026-09-02.csv<\/a><\/li>\nScope & Schema (
26<\/code> columns)<\/h3>\nIRS<\/code>, USCIS<\/code>, SSA<\/code>, VA<\/code>, State Dept<\/code>, DOL<\/code>, CMS<\/code>, California Judicial Council, UK HMRC<\/code>, etc.) using pypdf<\/code> and structural dictionary checks: – Identity & Source:<\/strong> slug<\/code>, formName<\/code>, issuer<\/code>, group<\/code>, country<\/code>, status<\/code> (134<\/code> ok<\/code>, 2<\/code> blocked<\/code>, 1<\/code> no_pdf<\/code>), pdfUrl<\/code>, edition<\/code>, pdfVersion<\/code>, producer<\/code> – Geometry & Widget Counts (628<\/code> pages, 19,512<\/code> terminal fields across 133<\/code> distinct PDFs):<\/strong> pages<\/code>, sizeKb<\/code>, fields<\/code>, textFields<\/code>, checkboxes<\/code>, radios<\/code>, choices<\/code>, signatures<\/code>, textLayer<\/code> – Structural Locks & Accessibility \/ Naming Metadata:<\/strong> xfa<\/code>, encrypted<\/code>, modifyDenied<\/code>, annotateDenied<\/code>, namedFieldsShare<\/code> (share of terminal widgets with semantic human-readable names rather than internal codes like f1_01[0]<\/code>), verdict<\/code> (xfa_hybrid<\/code>, acroform<\/code>, flat<\/code>), note<\/code><\/p>\nSummary Findings in the CSV (
134<\/code> analyzed entries)<\/h3>\n\n
114 \/ 134<\/code> (85.1%<\/code>) are xfa_hybrid<\/code> PDFs:** They embed an Adobe LiveCycle \/XFA<\/code> XML packet alongside standard \/AcroForm<\/code> widgets (0<\/code> in this sample were pure dynamic XFA shells). Writing to \/AcroForm<\/code> without stripping \/XFA<\/code> (https:\/\/justfill.app\/xfa-pdf-to-fillable-pdf<\/a>) causes desktop Acrobat to prioritize the empty <xfa:datasets><\/code> stream.<\/li>\n63 \/ 129<\/code> (48.8%<\/code>) of interactive forms have namedFieldsShare < 0.10<\/code>:** Terminal widgets use opaque internal identifiers such as topmostSubform[0].Page1[0].f1_1[0]<\/code> instead of semantic labels (with human descriptions stored only in \/TU<\/code> tooltip strings or adjacent page text).<\/li>\n44 \/ 134<\/code> (32.8%<\/code>) set modifyDenied = true<\/code> (16<\/code> also set annotateDenied = true<\/code>):<\/strong> Empty-password owner encryption locks page assembly and stamp\/annotation workflows despite opening without a user password.<\/li>\n5 \/ 134<\/code> (3.7%<\/code>) are flat PDFs (0<\/code> interactive fields):** Including DOL WH-347<\/code>, State Dept DS-3053<\/code>, DS-64<\/code>, USPS Form 1583<\/code>, and the UK HMRC Starter Checklist<\/code>.<\/li>\n<\/ol>\n\/AcroForm<\/code> vs. \/XFA<\/code> internals, or additional agencies worth adding in the next crawl.<\/p>\n<\/div>\n
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