# Nymphsoft

> Free, install-free developer utilities that run entirely in the browser. No sign-up, no server upload — all processing happens client-side in JavaScript. Korean-first site with a full English mirror under /en/.

## Tools

- [JSON Formatter & Validator](https://nymphsoft.com/jsonparser/): Validate, beautify/minify, and tree-view JSON; convert JSON to TypeScript interfaces.
- [XML Formatter & Viewer](https://nymphsoft.com/xmlparser/): Validate (well-formedness), beautify/minify, and tree-view XML; convert XML to JSON.
- [YAML ↔ JSON Converter](https://nymphsoft.com/yaml/): Convert YAML to JSON and JSON to YAML, with line/column error locations.
- [Hash Generator](https://nymphsoft.com/hashgen/): Compute MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes of text or a file.
- [UUID Generator](https://nymphsoft.com/uuidgen/): Generate UUID v4 (random) or v7 (time-ordered) in bulk.
- [JSON Diff](https://nymphsoft.com/jsondiff/): Compare two JSON documents as a tree or unified diff, with shareable links.
- [Text Diff](https://nymphsoft.com/textdiff/): Compare plain text or code side by side or as a git-style unified diff.
- [Base64 Encoder / Decoder](https://nymphsoft.com/base64/): Encode/decode text or files to and from Base64.
- [JWT Decoder & Signature Verifier](https://nymphsoft.com/jwt/): Decode JWT header/payload, check expiration, verify HS/RS/PS/ES signatures via Web Crypto.
- [URL Encoder / Decoder](https://nymphsoft.com/url/): Percent-encode/decode URLs and query strings, including form-urlencoded mode.
- [CSV ↔ JSON Converter](https://nymphsoft.com/csv/): Convert between CSV and JSON, with streaming for large files.
- [ICO ↔ PNG/JPG Converter](https://nymphsoft.com/ico/): Build multi-size ICO icons from images, or extract images from ICO files.
- [PDF ↔ JPG Converter](https://nymphsoft.com/pdf/): Extract PDF pages as images, or combine images into a PDF.
- [Layer Image Editor](https://nymphsoft.com/imageeditor/): Compose multiple images and text on a canvas; crop and remove flat backgrounds.
- [LLM Markdown Converter](https://nymphsoft.com/llms/): Paste a webpage's HTML and get clean, llms.txt-style Markdown of just the main content.
- [Text Splitter](https://nymphsoft.com/textsplitter/): Split long text into fixed-size chunks you can copy individually.

## Guides

- [Developer Guides](https://nymphsoft.com/guide/): In-depth articles on how things work, beyond basic tool usage.
- [JWT Signature Verification, Explained](https://nymphsoft.com/guide/jwt-signature-verification/): How HS/RS/PS/ES JWT signatures are verified in the browser.
- [Streaming a Large CSV File](https://nymphsoft.com/guide/streaming-large-csv/): Parsing multi-megabyte CSVs without freezing the tab.

## Optional

- [Privacy Policy](https://nymphsoft.com/privacy.html): No data is uploaded or stored server-side by any tool on this site.