Tools
Small utilities that run entirely in your browser — nothing is uploaded, nothing is stored. Each one is the companion to a field note; the workings are in ramwise-examples on GitHub.
Data Quality & ETL
Catch schema drift, verify record fingerprints, and trace temporal mutability.
- CSV inspector & schema diff →
Drop a CSV to see its columns, inferred types, blanks, and row count. Drop a second to diff the headers and catch a dropped or renamed column before it silently shifts your data.
- Content fingerprinter & hasher →
Drop a file or paste text to compute its cryptographic SHA-256 and SHA-1 signatures. See how filenames are labels, but checksums are content.
- Mutable date dimension explorer →
Shift logical system dates to see how helper attributes like IsCurrentDay violate the static promise of the date dimension by forcing updates to old records.
System Infrastructure & Hardware
Calculate drive storage configurations and virtualization limits.
- Storage pool layout calculator →
Calculate usable storage capacity, write penalties, and fault tolerance across ZFS Mirror/RAIDZ, BTRFS RAID1, and LVM Thin in your homelab.
from ZFS, BTRFS, and LVM in the Homelab: Picking a Filesystem Without Regret
Byte-Level Inspectors & Utilities
Inspect character encodings and evaluate mathematical formulas.
- Bytes & hash inspector →
See a string’s UTF-8 vs UTF-16LE bytes and the SHA-256 of each — why “the same text” can hash two different ways — or drop a file for its content fingerprint.
- Cookie fat-to-flour checker →
Will your cookie set? Enter the butter, flour, and chocolate and get the effective fat-to-flour ratio, with a verdict for whether it sets or turns to soup.
Creative Coding
A small, growing gallery of algorithm and physics sketches, running live in the browser.
- Simulation sketches →
A small, growing gallery of algorithm and physics sketches you can watch and tweak.
Bigger toolkits
Same idea — everything runs in your browser, nothing uploaded — but full standalone apps rather than embedded single-post widgets.
- mdbuild ↗
A browser-based Markdown editor that exports to PDF, HTML, Word, and images — entirely client-side, nothing uploaded. Two previews (instant and fidelity) so you know what the PDF will actually be before you make it.
- wavsnap ↗
Turns audio into a shareable waveform video — drop in a file, pick a reactive visualizer, export an MP4. No signup, no watermark, and the audio never leaves your device.
- anatini ↗
76 client-side data & developer tools — convert and inspect CSV, JSON, and Parquet; a SQL playground; hashes, encoders, regex, JWT. The full kit the little inspectors here are a taste of.
- trueres ↗
69 client-side audio & video tools — hi-res verification, spectrograms, LUFS loudness metering, format conversion, headphone testing. Privacy-first audio work for people who care about sound.
Command-line tools
These ones don't run in the browser — you install them and drive them from a terminal or a CI job.
- willitload ↗
pip install willitloadStructural pre-flight for bulk loads. Point it at a fileset and an expected schema and it names the files that will break the load, with the exact reason for each. It reports structure, never data quality — and exits non-zero on breaking drift, so it drops straight into a CI gate.
More will show up here as posts earn them.