Data & tables
Convert CSV, JSON, YAML and Excel data; sort, filter, compare by key, join tables and create pivots. Review your result before downloading a new copy.
Explore tools
HTML table and CSV converter
Extract a selected static HTML table as CSV, or build a safe HTML table from CSV cells.
CSV field constraint checker
Check CSV fields against local column rules and download valid records, rejected records and a cell-level issue report.
Fixed-width and CSV converter
Split fixed-width records by explicit Unicode code-point widths, or pad CSV fields into a fixed-width text file.
XLSX formula inventory
List ordinary formulas across workbook sheets with cell addresses, visibility and raw cached values, without recalculating.
CSV to SQL DDL draft
Draft a quoted CREATE TABLE statement from CSV headers and review sample-based type suggestions without executing SQL.
ICS calendar definition inventory
List local iCalendar components and event declarations with raw dates, time zones, recurrence rules and repeated properties.
2D WKT and GeoJSON converter
Convert strict two-dimensional WKT and GeoJSON geometries while preserving coordinate order, polygon holes and explicit Feature metadata sidecars.
GPX distance and elevation profile
Plot local GPX elevation against per-segment horizontal distance and export exact point metrics.
GPX point-budget simplification
Reduce GPX tracks to a specified total point budget while preserving original nodes and segment endpoints.
Assign CSV points to GeoJSON regions
Assign local CSV coordinates to Polygon or MultiPolygon regions with explicit hole, boundary and multiple-match policies.
Remove private GPX locations and times
Delete explicit private zones and start/end distances, reconstruct GPX from selected fields and export segment mappings without private centres.
RDF dataset canonical comparison
Compare two local RDF N-Quads datasets using RDFC-1.0 canonicalization, including renamed blank nodes and named graphs.
GeoJSON CRS reprojector
Reproject strict 2D GeoJSON between explicit WGS84 longitude/latitude and Web Mercator, preserving Feature metadata and polygon holes.
Rectilinear grid point counts
Count local planar or WGS84 point coordinates in occupied rectangular cells with explicit half-open boundaries.
Hidden worksheet and row/column inventory
Inventory declared hidden/veryHidden worksheets and explicitly hidden row/column ranges in a local XLSX without modifying it.
Typed binary and XML plist inspector
Read all local plist objects and references with exact integer width, signedness, raw float bits and a complete typed JSON report.
HMMER result-table export
Export every HMMER3 protein-table hit with query and target accessions, original numeric tokens, free-text descriptions and exact source byte spans.
MARC record-field export
Read raw ISO2709 records into complete ordered field/subfield JSON and long CSV, preserving Unicode, repeated tags, indicators and directory/value byte spans.
Multilocus sequence-matrix builder
Join already aligned DNA FASTA loci by exact taxon ID and export a complete FASTA/NEXUS supermatrix, locus partitions, presence map and original sources.
JSON with comments to JSON
Remove JSONC comments and trailing commas while preserving every original JSON number token.
JSON samples to schema skeleton
Merge strict JSON sample shapes into an editable Draft 2020-12 type skeleton with sources and inference evidence.
TOML and JSON configuration converter
Convert one configuration between TOML and JSON, retaining empty objects, arrays of tables and numeric types, with the original and report.
XCstrings manual translation exchange
Export existing direct translations and states for collaborators, then apply a complete returned table or a SHA-bound partial patch while retaining untouched catalog bytes.
Validate a JSON instance against a schema
Check supplied Draft 2020-12 constraints, inspect every supported rule failure and save the complete validation report.