The toolkit
Browser tools that stay out of your way. No accounts, no installs, no data leaving the tab. Each one does exactly one thing.
Suite is the home base. Every tool opens as a tab inside a single page, so you can move between them without navigating away or losing your work. If you're reaching for more than one tool in a session, start here.
Scale converts between data and time units instantly. Enter a value in any unit and get the full picture: bits to terabytes, Kbps to Gbps, milliseconds to days. Three tabs cover data size, transfer rates, and time, with a currency converter rounding it out. Handy when a spec says "1 Gbps" and you want to know how long a 500 GB transfer would actually take, or when you're sizing storage and need to think across units.
Scaffold turns a YAML definition into an interactive diagram. Describe your nodes (services, databases, load balancers, hosts) and their connections, and the canvas arranges everything with a force simulation, updating live as you type. Nodes can be organised into groups, which render as labelled regions on the canvas. The canvas also works directly: double-click to add a node, shift-click two nodes to connect them, right-click for options. Diagrams share via URL and export as JPEG or PDF.
Scout performs DNS lookups via DNS-over-HTTPS, straight from the browser. Enter a hostname and it queries every standard record type (A, AAAA, MX, TXT, CNAME, NS), returning each result with its value and TTL. Toggle chips to filter by type. No local DNS client, no terminal required.
Seal decodes PEM certificates and certificate signing requests entirely in the browser. Drop in a cert or CSR and the inspector surfaces every field: subject, issuer, validity window, SANs, public key algorithm, serial number, SHA-256 fingerprint, and key usage extensions. A validity badge shows at a glance whether the certificate is current, expired, or not yet active.
Sift parses raw whois output into a structured inspector. Paste the dump and the right pane organises it into clean sections: domain details, registrar info, key dates (created, updated, expiry), registrant, and nameservers. Expiry dates come with a live countdown. No more scanning walls of unformatted text.
Sigil decodes JSON Web Tokens in the browser. The three parts of the token (header, payload, signature) are colour-coded in the input pane. The inspector breaks each section down cleanly: algorithm and type from the header, all payload claims with standard ones like sub, iss, aud, and exp called out prominently, and a validity badge showing whether the token is live, expiring soon, or already expired.
Skim parses OpenAPI specs and renders them as a browsable UI. Supports both Swagger 2.0 and OpenAPI 3.0. Paste a spec and every endpoint appears grouped by tag, with method badges (GET, POST, PUT, DELETE), parameter tables, request body schemas, and response codes with descriptions. Faster than reading raw JSON, lighter than running a full Swagger UI instance.
Slice takes a CIDR prefix and returns the full picture: network address, broadcast, subnet mask, wildcard mask, usable IP range, host count, IP class, and binary mask. Preset buttons cover the common private ranges. A separate section lets you carve the subnet into smaller prefixes and download the result as CSV. A reference table covers every prefix length from /0 to /32.
Span converts raw traceroute output into a visual path diagram. Each hop becomes a node on a vertical path, with RTT colour-coded by latency band and the delta between consecutive hops shown as a badge on the connecting line. Five bands cover the range from under 10ms through to timeouts. The diagram exports as PNG.
Split shows a side-by-side diff of any two text inputs. Paste into the Before and After panes, or upload files directly. Changes are highlighted line-by-line with an LCS diff: deletions in red on the left, additions in green on the right. Works across any plain text: configs, code, logs, manifests.
Stalk looks up geolocation and network data for any IPv4 or IPv6 address. Enter an IP and get back country, city, ASN, ISP, timezone, and coordinates on a map. It also shows BGP routing information and resolves the reverse DNS (PTR) record. Useful when you need to understand where a request is coming from, which organisation owns a given block, or how the address is announced.
Stencil is a three-panel live renderer for Jinja2 templates. Write the template using standard syntax (variables, loops, conditionals, filters), supply values as JSON or YAML, and the rendered output updates as you type. Useful for generating environment-specific configs, templated manifests, or anything with a fixed shape and variable data.
Sundial converts Unix timestamps and date strings into every common format at once. Paste an epoch (seconds or milliseconds), an ISO 8601 string, or hit Now for the current time, and it returns UTC, local time, ISO 8601, RFC 2822, relative time, and more in a single view. Good for debugging log timestamps, reading API responses, or sanity-checking a number mid-incident.
Swap is a bidirectional JSON and YAML converter. Edit the JSON pane and the YAML follows. Edit the YAML and the JSON follows. Both panes auto-detect format, and a button flips which side is which. No submit button, no page reload. The conversion is live.