Hi Product Hunt, I built difflens.io because plain text diff often becomes noisy when comparing structured developer text. The goal is simple: paste two pieces of text, let the tool detect the format, and see only the meaningful differences. What difflens.io supports today: - JSON, YAML, TOML, XML, HTML, Markdown, CSV, TSV, Cookie, Set-Cookie, Java Properties, cURL, JetBrains .http files, and plain text - Field-level structured diffs for objects and request data - Inline highlights when only part of a value changed - Ignored paths, ignored whitespace, ignored case, and ignored key order - Editable left/right editors with line numbers, folding, synchronized scrolling, and diff markers - Local-first comparison: pasted content is processed in the browser and is not uploaded The use cases I care most about are debugging API requests, comparing copied cURL commands, reviewing cookies, and checking config changes without sending sensitive content to a server. difflens.io is open source: https://github.com/difflens-io/d... I would appreciate feedback on: - Which formats should be improved next? - Is the editor diff view clear enough? - Would a browser extension or VS Code / JetBrains plugin be useful?

https://www.difflens.io

Local-first diff for JSON, cURL, cookies and .http

Local-first diff for JSON, cURL, cookies and .http