VoxVera Flyers

VoxVera provides scripts and templates for producing printable flyers with QR codes. These flyers link to content hosted through Tor and can also include a Nostr page. The project automates building the HTML, generating the QR codes, and copying all assets into a directory under host/ so they can be served statically.

Prerequisites

Node.js and npm
jq
qrencode
ImageMagick (convert)
javascript-obfuscator and html-minifier-terser (installed via npm)
pdftotext (optional, used when extracting fields from a PDF form)

Installing Dependencies

On Debian or Ubuntu systems you can install the required packages with:

sudo apt update
sudo apt install -y jq qrencode imagemagick poppler-utils nodejs npm

macOS

With Homebrew you can install the same dependencies:

brew install jq qrencode imagemagick poppler node coreutils

The obfuscation scripts attempt to use mktemp --suffix when creating temporary files. If that option is unavailable – for example on macOS without GNU coreutils – the scripts automatically fall back to a portable mktemp command that yields the same result.

The obfuscation scripts also rely on a pair of Node modules. Install them globally:

npm install -g javascript-obfuscator html-minifier-terser

A helper script setup.sh is provided to check for these dependencies and install anything that is missing.

Windows

These scripts rely on a Unix-like environment. The recommended approach on Windows is to use WSL2 with a Debian distribution. Install WSL and Debian with:

wsl --install

Launch the Debian terminal and run setup.sh from this repository or the apt commands shown above to install all prerequisites. Alternative environments such as MSYS2 or Git Bash can also be used, but they must provide the same command-line utilities.

Generating a Flyer

Run the helper script from the repository root:

# interactive prompts
./src/create_flyer.sh

# use an alternate config file
./src/create_flyer.sh -c path/to/custom.json

# use answers from an existing PDF form
./src/create_flyer.sh --from-pdf path/to/form.pdf

When run interactively you'll be prompted for details such as the flyer title and headline. The script now also asks for a URL and a Tear-off link. These values are written into the configuration file (src/config.json by default) and determine the QR code targets.

The script updates the chosen config file, regenerates QR codes, obfuscates index-master.html and nostr-master.html, and copies the resulting files plus PDFs and QR images into host/<subdomain>. The resulting src/index.html and src/nostr.html files are generated automatically and excluded from version control via .gitignore. The contents in that directory can then be hosted.

Additional documentation is available in the src/ directory; see src/README.md for more details on the obfuscation scripts and additional usage notes.

Step-by-Step

Edit src/index-master.html or src/nostr-master.html if you need custom content.
Run ./src/create_flyer.sh and follow the prompts, or use ./src/create_flyer.sh --from-pdf path/to/form.pdf.
Host the generated host/<subdomain> directory. The index.html file fetches config.json, so the flyer must be served via a local or remote web server rather than opened directly from disk. For a quick test you can run python3 -m http.server inside the folder and then visit the provided address.

Batch Import

Place configuration files in an imports/ directory at the project root. Run

./src/import_from_json.sh

Each JSON file is copied to src/config.json and processed with create_flyer.sh --no-interaction. Existing folders under host/ with the same subdomain are removed before new files are written.

Hosting with OnionShare

The folder under host/<subdomain> contains everything needed to serve the flyer. Run the helper script serve_with_onionshare.sh from the repository root to publish it over Tor:

./serve_with_onionshare.sh

The script launches onionshare-cli in persistent website mode, waits for the generated onion URL, patches config.json, regenerates the QR codes and obfuscated HTML, and then copies the updated files back into the host directory. The onion address is printed when ready. Keep OnionShare running to continue hosting.

index.html fetches config.json dynamically, so the flyer should be viewed through a local or remote web server. For quick testing, run python3 -m http.server in the folder and open the provided address instead of loading the file directly.

This project is licensed under the MIT License.

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