firecrawl/pdf-inspector

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Fast Rust library for PDF inspection, classification, and text extraction. Intelligently detects scanned vs text-based PDFs to enable smart routing decisions.

Stars: 19.1k
Forks: 1.3k
Open beginner issues: 0
Indexed issues: 102
Avg merge: 9h 21m
Merged PRs (30d): 51

Dominant language: Rust
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 16, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

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102 open issues indexed

Expose per-page pages_with_images signal Open

firecrawl/pdf-inspector#36 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Enable Link-Time Optimization (LTO) and codegen-units = 1 for Release builds (and possibly other options) Open

firecrawl/pdf-inspector#95 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
[layout issue] columns not found properly Open

firecrawl/pdf-inspector#104 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Expose per-font ToUnicode presence/validity so consumers can detect garbled text layers Open

firecrawl/pdf-inspector#122 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Form XObject path/paint graphics never reach underline/strikeout detection Open

firecrawl/pdf-inspector#126 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
wasm: expose DetectionConfig/ScanStrategy — { strategy: "full" } is silently ignored (always Sample(8)) Open

firecrawl/pdf-inspector#183 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Your project is on StackMap — a curated map of the AI stack Open

firecrawl/pdf-inspector#185 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Closed stroked paths (h then S) never reach underline detection Open

firecrawl/pdf-inspector#196 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
extract_pages_markdown returns an empty page when the page contains a single U+FFFD Open

firecrawl/pdf-inspector#202 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 16, 2026
detector: text-ratio branch shadows the Mixed classification when scanned pages carry a little real text Open

firecrawl/pdf-inspector#205 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
processPdf/extractPagesMarkdown/extractTextInRegions drop most body text while extractText() returns it fully (complex-layout pages) Open

firecrawl/pdf-inspector#210 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Corrupted text extraction for text-based PDFs Open

firecrawl/pdf-inspector#211 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Arabic (RTL) text is returned in visual order, not logical order Open

firecrawl/pdf-inspector#212 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Arabic text-based PDF classified as Mixed with nearly all pages needing OCR; classification takes ~15s Open

firecrawl/pdf-inspector#213 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Feature: language-aware sanity signal for text layers that decode to the wrong characters Open

firecrawl/pdf-inspector#214 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Feature: label footnote / header / marginal text as distinct regions Open

firecrawl/pdf-inspector#215 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Expose signals the detector already computes: reading direction and per-page confidence Open

firecrawl/pdf-inspector#217 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add RTL/Arabic regression fixtures to CI — generated at test time, nothing to host Open

firecrawl/pdf-inspector#218 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Two-column pages: columns are detected but markdown is emitted in raster order (lines interleaved) Open

firecrawl/pdf-inspector#219 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Feature: distinct-n self-check to catch duplicated output (well-encoded but repeated text) Open

firecrawl/pdf-inspector#220 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Sparse/grouped table rows collapse into a single Markdown row with concatenated cells Open

firecrawl/pdf-inspector#229 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Partial CJK corruption on CIDFontType2 subsets whose ToUnicode is a full-range identity bfrange (dompdf) Open

firecrawl/pdf-inspector#246 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Document and expose configurable classification thresholds and sampling options for OCR routing Open

firecrawl/pdf-inspector#247 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add OCR routing integration guide with confidence threshold and Mixed-PDF handling examples Open

firecrawl/pdf-inspector#248 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
extract_pages_markdown_bytes() flags every page as needs_ocr on a plain text-based PDF, contradicting detect_pdf_bytes() Open

firecrawl/pdf-inspector#252 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Add OCR routing decision guide with recommended confidence thresholds and examples Open

firecrawl/pdf-inspector#254 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Document confidence scores and make OCR routing thresholds configurable Open

firecrawl/pdf-inspector#266 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Expose configurable confidence threshold for OCR routing and document threshold behavior Open

firecrawl/pdf-inspector#267 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Markdown is always None Open

firecrawl/pdf-inspector#269 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Ruled table splits into multiple tables when a single cell wraps to more than one line Open

firecrawl/pdf-inspector#270 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
pdf-inspector is near the top of the star-velocity board at 1,717 stars a day Open

firecrawl/pdf-inspector#271 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
pdf-inspector fails on Chinese z-library PDFs (crash + misclassification + silent empty extraction) Open

firecrawl/pdf-inspector#272 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Scanned/ImageBased page_signals empty case untested Open

firecrawl/pdf-inspector#276 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Electricity and magnetism Open

firecrawl/pdf-inspector#281 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Page-number stripping deletes body content on A4 pages (PAGE_NUMBER_TOP_Y is US-Letter-calibrated) Open

firecrawl/pdf-inspector#283 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Valid PDF rejected as `malformed document: invalid PDF structure` when more than 506 trailing bytes follow `%%EOF` Open

firecrawl/pdf-inspector#286 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Table row is dropped into prose when its label starts with a footnote marker (is_footnote_row only checks the text before the first ")") Open

firecrawl/pdf-inspector#288 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Making V2RAY Proxies Open

firecrawl/pdf-inspector#290 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
ERROR: arxiv paper title and people name format process error Open

firecrawl/pdf-inspector#291 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Adopt/state policy/licensing for externally-sourced PDFs included as test fixtures Open

firecrawl/pdf-inspector#293 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Rotated column headers are scrambled across cells when the page is not mostly rotated Open

firecrawl/pdf-inspector#296 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Raised numeric glyphs are never re-attached: footnote markers lead their cell, exponents corrupt the next one Open

firecrawl/pdf-inspector#297 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Two strict-parsing cases reject PDFs that other readers accept (trailing bytes after %%EOF, startxref off by one) Open

firecrawl/pdf-inspector#301 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
feat(wasm): support text extraction within page regions Open

firecrawl/pdf-inspector#302 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Emit image placeholders with position and extractable bytes Open

firecrawl/pdf-inspector#304 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Dense CAD/DWG PDF pages can return empty text when content streams exceed 1M operations Open

firecrawl/pdf-inspector#307 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
extract_text_with_positions Python page filter has inconsistent page indexing Open

firecrawl/pdf-inspector#308 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Extract text from legacy Form XObjects that inherit page resources Open

firecrawl/pdf-inspector#309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
please cut a patch release: lopdf 0.42.0 DoS fix (RUSTSEC-2026-0187) is on main but unreleased Open

firecrawl/pdf-inspector#310 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026
Overlapping text drawn twice at the same position is not deduplicated, every character is duplicated in markdown output Open

firecrawl/pdf-inspector#313 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 16, 2026

firecrawl/pdf-inspector

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