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MIME タイプ検索

MIME lookup: enter file extension or MIME to get Content-Type with common types. Supports batch processing, export and one-click copy, offline use.

使い方

検索方向を選択し、拡張子（例：jpg）または MIME タイプ（例：image/png）を入力。結果が即時表示。

Overview

MIME Type Lookup is a Developer tool. MIME lookup: enter file extension or MIME to get Content-Type with common types. Supports batch processing, export and one-click copy, offline use. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Daily use of MIME Type Lookup: Choose a direction, enter an extension (e.g. jpg) or MIME type (e.g. image/png). The result shows instantly. — enter and get instant results without manual lookup.
  • One-click copy keeps results ready to save, check or share with family and pros.
  • Use MIME Type Lookup offline or on poor network — all calculations stay local and private.
  • Test regex with highlights
  • Escape code for string literals

How to use

  1. 1 Choose a direction, enter an extension (e.g. jpg) or MIME type (e.g. image/png). The result shows instantly..
  2. 2 Pick action and options
  3. 3 Fix highlighted errors
  4. 4 Copy or export

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Disable live validation for large files
  • Watch greedy vs lazy regex
  • Strict JSON disallows comments/trailing commas

FAQ

Why invalid?
Trailing commas, single quotes or BOM often cause it.
Offline?
Yes, parsing is local.
How is MIME Type Lookup different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “mime type, content-type” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
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