Clipboard Format Viewer
Paste anything and see every MIME flavour the clipboard is really carrying - text/plain, text/html, text/rtf, image/png, vendor-specific types - with the raw payload behind each. Useful when a paste mysteriously loses formatting, or when writing paste-handling code. Runs fully client-side. Imported Claude artifact. Source: https://github.com/simonw/tools (clipboard-viewer.html, Apache-2.0).
Name your fork
This clones the app's prompt and source into your account as a new unlisted app. You can edit and publish it from your dashboard.
Details
View source prompt + release files — fork-enabled apps share their full source
System prompt (SKILL.md)
---
name: clipboard-viewer
description: Paste anything and see every format the clipboard is actually carrying, with the raw data for each.
metadata:
tags:
- artifact-import
- dev-tools
source_url: https://tools.simonwillison.net/clipboard-viewer
github_repo_url: https://github.com/simonw/tools
---
# Clipboard Format Viewer
An imported Claude artifact. Copy something anywhere and paste it in: the page
lists every MIME flavour the clipboard is carrying - text/plain, text/html,
text/rtf, image/png, vendor-specific types - and shows the raw payload behind
each one.
This is the tool you want when a paste "loses formatting", when an app writes
its own private flavour alongside the visible text, or when you are writing
paste-handling code and need to know what actually arrives.
Images on the clipboard are rendered from blob URLs created in the page. The
main path reads the paste event directly; nothing is uploaded, no model is
called, and nothing is metered.
Release files (files)
Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.