Breaks more complex multi-level tables, with rows and merged cells misaligned or lost once the hierarchy becomes dense.
What was measured
Table Preservation
Preserves complex table structures, including rows, columns, multi-row headers, and merged-cell relationships in markdown.
decisive for this rankingtransformation
Accurate Markdown conversion of complex PDFs depends on keeping table structure intact, not flattening it into plain text. (3 of 3 judges)
What was given, what came back
Test input: Scanned Research Paper · pdf · group: scanned-research-paper
Input — what we sent
An image-only scanned research paper used to stress OCR and layout recovery in a multi-column academic document with figures, charts, tables, captions, and references.
Why this input is hard
- · OCR on scanned pages
- · Multi-column reading order
- · Figure and chart handling
- · Table reconstruction from scans
- · Caption association
- · Reference extraction
- · Overall document structure retention
Output — unretouched
Also checked on this input — same tool, 5 other criteria
Complex Document Handling✓ WorkedProcesses an image-only scanned research paper end to end and returns a parsed markdown output plus preview, showing it can handle a multi-page scanned document.Reading Order & Structure✗ FailedMisorders the first page so the abstract is placed before the title, showing a layout-reading-order inversion on the scanned article.Reading Order & Structure✓ WorkedThe tool preserves section hierarchy and column order in a dense multi-column scanned section, keeping headings aligned with the correct body text.Text & OCR Completeness✓ WorkedRecovers readable text from scanned pages, including the abstract, keywords, author affiliations, title, and opening paragraphs on the first page.Visual Content Retention⚠ StruggledExtracts the Figure 3 chart's values, but the chart structure and layout are not preserved, so the visualization is flattened into text-like output.
Provenance
- Observation
- d9350bf4-9574-4634-8293-5ced2ab60d9c
- Evidence run
- 6e3160de-fe46-4b45-b071-72560b5c5d0e
- Study
- Convert a Complex PDF into Clean Markdown with an API
- Research task
- 86b9h7t37
- Tested at
- not recorded
- Source
- first-party
- Evidence state
- verified
- Proof shown
- input + output shown
- Cost / latency
- not captured
- Repeat run
- not captured
- Tester
- not captured
The last three rows are honest blanks, not placeholders — our capture has no field for them yet.
Query this
get_evidence({
tool: "nutrient-io",
scenario: "scanned-research-paper"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 8 other tools
measured on Table Preservation
Adobe API✗ FailedBreaks a grouped-column table when intervening text appears, fragmenting the 1979–1981 layout and corrupting the extracted alignment.Extend AI⚠ StruggledBreaks multirow header relationships in a scanned table, so grouped headers and header-level structure are not reliably preserved.Landing AI✓ WorkedPreserves a complex diameter-class table with before-cut, trees-cut-per-acre, and after-cut relationships across the treatment rows and check area.LlamaParse✓ WorkedPreserves a nested treatment table with the 7-inch, 10-inch, 12-inch, 100-leave-tree, and clearcut columns and the acres/live-lodgepole rows.Mistral AI✓ WorkedThe multicolumn table is reconstructed without losing its overall layout logic, so the table structure remains readable in the parsed output.Reducto◐ MixedPartially reconstructs Table 1: most of the roughly 90 numeric values are exact, but literal 0 values in the 12-inch column become blanks, one mean cell picks up stray digits (33.0 830000), and a row-label-only section header is broadcast across all six columns in one instance.Tensorlake✗ FailedStruggles with hierarchical scanned tables, misplacing column headers and producing unreliable reconstructions on both the multicolumn table and the denser complex table.Upstage AI◐ MixedKeeps the table values intact but reconstructs the headers incorrectly, leaving a grouped-column table with inconsistent structure.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com