Tools I built,
free for everyone.

Stream-process CSV, TSV, NDJSON, and JSONL with Miller-style verb chains.

Filter, sort, pivot, and reshape CSV, JSON, TSV, and NDJSON data.

Run SQL SELECT queries on CSV and TSV files instantly in your browser.

Profile CSV, Parquet, JSONL, Avro, and SQLite datasets and infer schema.

Run DuckDB SQL on CSV, JSON, Parquet, and SQLite files in the browser.

Open and safely extract ZIP, 7z, RAR, TAR, ISO, DMG, and nested archives.

Preflight unsafe PostgreSQL migrations for locks and blocking DDL.

Lint, format, and rewrite SQL across Postgres, MySQL, Snowflake, and BigQuery.

Compile AsciiDoc to HTML, PDF, and EPUB with diagrams and themes.

Compare DOCX versions, accept or reject tracked changes, extract comments.

Validate, repair, and convert EPUB, MOBI, and AZW3 ebooks.

Compare Excel workbooks at cell, formula, style, and structure level.

Generate styled Excel XLSX spreadsheets from declarative JSON.

Render LaTeX math to SVG, PNG, PDF, and accessible MathML.

Convert Markdown, DOCX, HTML, LaTeX, EPUB, and PDF with Pandoc.

Fill, flatten, and validate PDF AcroForms from JSON, FDF, or XFDF.

Parse PDFs into RAG-ready Markdown and JSONL chunks with reading order.

Merge, split, compress, rotate, and watermark PDFs entirely in your browser.

Compare PDFs visually and structurally with per-page masks and summaries.

Render PowerPoint slides to PNG, JPEG, SVG, and PDF and extract notes.

Compile Typst documents to PDF, SVG, PNG, and HTML in a live editor.

Diff two GraphQL schemas to find breaking and dangerous changes.

Compare OpenAPI and JSON Schema specs to find breaking changes per operation.

Detect breaking changes between OpenAPI 3.0 and 3.1 specs.

Paste raw CLI output and get clean, structured JSON for 100+ commands.

Query and scrape HTML with CSS selectors, extract text and attributes.

Query and patch YAML, JSON, TOML, and XML configs while preserving comments.

Query and convert YAML, JSON, XML, TOML, and INI with jq-style expressions.

Run EBU R128 loudness normalization and generate waveforms.

Subset, convert, and QA TTF, OTF, WOFF, and WOFF2 fonts in the browser.

Remove EXIF, GPS, XMP, and IPTC metadata from images and documents.

Generate Open Graph social cards and syntax-highlighted code screenshots.

Convert, normalize, mux, and burn SRT, VTT, ASS, and TTML subtitles.

Sanitize, optimize, rasterize, and diff SVGs and strip XSS risks.

Trim, concat, and remux video and generate thumbnails with FFmpeg.

Write, test, and benchmark grok and Logstash patterns with field inference.

Query any log file with SQL — nginx, Apache, syslog, and JSON logs.

Paste any log file and get instant syntax highlighting and structure.

Lint and security-scan GitHub Actions YAML for unpinned actions and injection.

Get a production-readiness score for Kubernetes YAML manifests.

Visualize terraform plan JSON with dependency graphs and blast-radius warnings.

Detect true file types from magic bytes and flag MIME mismatches.

Check DNS, RDAP, TLS, certificate chains, and ASN with DNSSEC validation.