# devtools.nicxon.tech

> Developer format & encoding tools that run entirely in your browser. All
> processing happens client-side; nothing is uploaded. No accounts, no
> tracking, no cookies.

## Format & convert
- [JSON formatter & validator](https://devtools.nicxon.tech/tools/json-formatter/): Pretty-print or minify JSON with exact line/column error reporting.
- [JSON ↔ YAML converter](https://devtools.nicxon.tech/tools/json-yaml/): Convert between JSON and YAML in either direction, preserving types and key order.
- [CSV ↔ JSON converter](https://devtools.nicxon.tech/tools/csv-json/): Turn CSV into an array of objects and back, with delimiter and header control.

## Encode & decode
- [Base64 encoder & decoder](https://devtools.nicxon.tech/tools/base64/): Encode or decode Base64 and Base64URL for UTF-8 text or files.
- [URL encoder & decoder](https://devtools.nicxon.tech/tools/url-encode/): Percent-encode or decode a full URL, query component, or path segment.
- [JWT decoder](https://devtools.nicxon.tech/tools/jwt-decoder/): Decode JSON Web Token header and payload, expand standard claims, flag alg:none and expired tokens.

## Hash & HMAC
- [Hash generator](https://devtools.nicxon.tech/tools/hash-generator/): MD5, SHA-1, SHA-256, SHA-512 of text or a file via SubtleCrypto.
- [HMAC generator](https://devtools.nicxon.tech/tools/hmac-generator/): Keyed HMAC over a message using SHA-1, SHA-256, SHA-384, or SHA-512.

## Generate
- [UUID & ULID generator](https://devtools.nicxon.tech/tools/uuid-ulid/): Cryptographically random UUID v4 and lexicographically sortable ULIDs in bulk.

## Time & scheduling
- [Cron expression builder & explainer](https://devtools.nicxon.tech/tools/cron/): Build a cron expression from fields, read it back in plain English, preview the next five run times.
- [Unix timestamp converter](https://devtools.nicxon.tech/tools/timestamp/): Convert Unix seconds or milliseconds to a human date in any time zone, and back.

## Text & patterns
- [Regex tester](https://devtools.nicxon.tech/tools/regex-tester/): Test a JavaScript regex against sample text and inspect every match and capture group.
- [Text diff](https://devtools.nicxon.tech/tools/text-diff/): Compare two blocks of text and see additions and deletions at word level.

## Information
- [About this site](https://devtools.nicxon.tech/about/)
- [Contact](https://devtools.nicxon.tech/contact/)
- [Privacy](https://devtools.nicxon.tech/privacy/)

## Full corpus

A concatenated Markdown copy of every tool is available at
[/llms-full.txt](https://devtools.nicxon.tech/llms-full.txt).

## Per-tool Markdown views

Each tool page also has a Markdown twin for direct ingestion:
`/tools/<slug>.md` (e.g. `/tools/json-formatter.md`).