Diffchecker
DiffChecker - Smart cURL & Text Compare Tool
What it does
Compare API responses instantly between localhost and production. Just paste your cURL commands side-by-side and see the differences highlighted in real-time. - Privacy-first: everything runs in your browser - Smart diff that ignores timestamps & IDs - Side-by-side cURL inputs for any environment - Instant JSON formatting & syntax highlighting Perfect for debugging APIs, validating deployments, and catching integration issues before they hit production. No signup, no data leaves your browser.
Does a similar job
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- UDUncurl.dev – Convert curl commands to a shareable, executable UI2025 · uncurl.dev · ▲115
Hey HN, I built uncurl.dev to scratch my own itch: I kept getting curl commands in API docs, bug reports, or Slack messages and wanted a quick way to visualize, run, and debug them without firing up Postman or writing code to dissect them. It was also sometimes painful to create a test page specifically for non-tech users to consume an API. I originally vibe-coded this over a weekend just to make it easier for myself to debug API requests shared as curl commands. It slowly grew into something I found surprisingly useful in my workflow, so I decided to clean it up and share it. uncurl.dev…
- IRIntercept.rest – Faster API debugging2018 · ▲89
Sharing an internal tool that accelerated my development work 10-fold, especially with API debugging. Thought fellow developers here might find it useful. As a developer, I often have trouble reproducing errors at the client end. https://intercept.rest lets me debug and monitor API requests and responses. It is similar to the Network tab in Chrome Developer Tools but works for any API: mobile apps, webhooks, frontend etc. After I shared it with a close circle of friends, they found it incredibly useful and even found new use cases, I never imagined. Been a long time lurker here and…
- SPSecure private diffchecker with merge supportNov 2025 · diffchecker.dev · ▲17
Built a minimal diff checker with merge feature. 1. Supports 25K+ lines. 2. Character level instant diff. 3. Diff merge feature. 4. Share able links. 5. 100% secure, all diff computation happens in browser. No other website offering high quality diff checker and merge feature with just browser only implementation. Please review the website in detail and share feedback.
https://www.difflens.ioJul 2026 · difflens.io · ▲2Local-first diff for JSON, cURL, cookies and .http
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