345 free online tools
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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.
Offline JSON-LD expander and compactor
Expand or compact JSON-LD 1.1 with inline contexts and a supplied local URL-to-context map, without fetching remote documents.
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.
Shorten low-level recording pauses
Shorten long pauses under an all-channel RMS threshold and export complete retained-frame mappings.
Recover and split recorded channels
Explicitly isolate, repeat or split existing source channels into playable WAV files with full mappings.
Full-recording spectrogram and numeric export
Analyze the complete recording and export a labelled PNG, full STFT amplitude matrix and explicit window/time/frequency settings.
Apply explicit recording frequency filters
Apply explicit high-pass, low-pass or notch chains and export WAV, response and clipping counts.
Schema-bound Protobuf message decoder
Inspect binary Protobuf with a supplied standalone proto2/proto3 schema and explicit message type, including 64-bit integers, field presence and unknown wire records.
Avro writer/reader schema compatibility
Check both resolution directions between local Avro JSON schemas, including promotion, aliases, defaults and incompatible results.
Find matching SSH known-host records
Search a local known_hosts file for a supplied host and port, with match explanations and supported public-key fingerprints.
Font Unicode coverage
Check supplied static fonts for each Unicode code point, without installing fonts or using fallback.
Rectilinear grid point counts
Count local planar or WGS84 point coordinates in occupied rectangular cells with explicit half-open boundaries.
Batch STL geometry measurements
Measure up to3,000 local STL models with complete bounds, dimensions, area and explicitly qualified closed-surface integrals.
Filename-template MP3 tag editor
Persist composed MP3 titles, artists and track numbers from an explicit filename template while preserving MPEG and unrelated tag frames.
CUE-index recording splitter
Split one WAV, MP3 or raw FLAC recording at explicit CUE indexes and export PCM16 WAV tracks with complete source-frame mappings.
Finalize DOCX text revisions and classic comments
Accept or reject supported DOCX run-level text revisions, delete classic comment structures and stop future revision tracking.
LCOV offline coverage report
Read one local LCOV 1.x tracefile, recompute coverage totals, retain unknown branches and download a complete offline HTML report.
Intel HEX address merger
Merge local Intel HEX 00–05 files by sparse 32-bit addresses, checking record checksums, overlaps and entry-point conflicts before output.
Notebook output cleaner and source recovery
Remove outputs and execution counts from a local nbformat 4 notebook while preserving cell source, attachments and precise metadata numbers.
JUnit offline test report
Read local JUnit XML results, distinguish testcase outcomes from declared counters and download every failure and log in an offline report.
CycloneDX dependency-reference audit
Audit local CycloneDX 1.6 bom-ref declarations and dependency edges, showing duplicates, dangling references, external URNs and unambiguous cycles.
GEDCOM references and ancestry audit
Inspect UTF-8 GEDCOM 5.5.1 family/person references, reciprocity and declared ancestry SCCs with original lines and pedigree classifications.
SARIF rules and locations report
Read local SARIF 2.1.0 runs, resolve rules, artifact indices and directory URI bases, preserving unlocated results, unknown states and complete original results.