FREE DATASET TOOLS
Make your data easier to work with.
Inspect recordings, document a collection, and measure transcription errors. Free, with downloadable results and no signup.
Media Dataset Inspector
Inspect audio and video files locally. Count recording hours, check codecs, sample rates and dimensions, and export a CSV file manifest.
Open free tool →Dataset Card Builder
Create a free dataset card, README and CSV datasheet. Document collection methods, provenance, permissions, quality checks and limitations.
Open free tool →Speech Evaluation Workbench
Free WER and CER calculator with transcript alignment, normalization controls, batch JSONL scoring and downloadable speech evaluation reports.
Open free tool →Selected files and tool text stay in your browser. Standard site analytics measure visits and tool actions. Review results before sharing them with collaborators or buyers.
Need a collection plan? Read the guides. Already have data? Request an assessment.