Clipboard Copy Utilities for Streamlit

This Python package provides easy-to-use functions to copy text to the clipboard within Streamlit applications, supporting both HTTP and HTTPS contexts.

Key Features

• Works seamlessly on both HTTP and HTTPS:
  Supports the modern, secure Clipboard API (navigator.clipboard.writeText) used in HTTPS environments,
  and falls back to the legacy document.execCommand('copy') method for HTTP or older browsers.

• No dependency on UI elements:
  Clipboard copy commands can be triggered programmatically anywhere in your Streamlit app
  without requiring explicit user interaction with buttons, making integration flexible and convenient.

• Fully compatible with Streamlit's iframe-based rendering:
  1% UI footprint — runs almost invisibly without affecting layout.

Why Use This Package?

Streamlit apps run inside iframes and are often served over HTTPS, which imposes strict browser security policies on clipboard access.
This package provides a reliable way to copy text to the clipboard regardless of the protocol or browser limitations by using both secure and fallback methods.

Installation

pip install st-clipboard

Usage Example

Here is an example Streamlit app showing two columns with text inputs and buttons — one using the secure clipboard copy (for HTTPS), and the other using the unsecured fallback (for HTTP):

import streamlit as st

from st_clipboard import copy_to_clipboard, copy_to_clipboard_unsecured


# Create two columns: HTTPS (left), HTTP (right)
col_https, col_http = st.columns(2)

with col_https:
    st.markdown("### HTTPS Clipboard Copy")
    https_text = st.text_input("Enter text to copy (HTTPS):", value="Hello HTTPS")
    if st.button("Copy to clipboard (HTTPS)"):
        copy_to_clipboard(https_text)
        st.success("Copied to clipboard using secure method!")

with col_http:
    st.markdown("### HTTP Clipboard Copy")
    http_text = st.text_input("Enter text to copy (HTTP):", value="Hello HTTP")
    if st.button("Copy to clipboard (HTTP)"):
        copy_to_clipboard_unsecured(http_text)
        st.success("Copied to clipboard using unsecured method!")