TagDrop Generator

Placement hint (optional — shown to the finder)

Filename (optional)

Icon (optional — emoji shown as a visual badge)

Collection label (optional — name for this code's collection)

Collection ID (optional, hex — same value on every code in the collection, see §7 Collections)

Collection tag (optional — short hashtag-style cross-reference)

Description (optional — content teaser, e.g. "A poem left for whoever finds this bench")

Title (optional — short subject/caption, see §7 Postcards)

Replying to (optional, hex — cache_id/root_hash of the code this replies to, see §7)

Created at (optional — self-declared authoring time, taken from this device's clock; not verified)

Latitude (optional — this code's own declared location, see §4.2)

Longitude (optional)

Location uncertainty radius (optional, meters)

Prefer declared location over live GPS For placements where the author's coordinates are more reliable than the scanning device's GPS fix (e.g. indoors)

Location label (optional — human-readable, non-coordinate description, e.g. "🚋 Tram 40"; see §4.2) Leaving latitude/longitude blank while this is set tells scanners this drop has no fixed point — they won't substitute their own GPS fix

MIME type

Compress with DEFLATE Saves ~50–70% for HTML/text

🟪 Pixel art (no smoothing) Declares this image should render at hard pixel edges rather than smoothed (SPEC §7) — only needed for pixel art too large for a renderer's own small-image heuristic (≤64×64px) to catch on its own

🔏 Sign with ML-DSA-44 (SPEC §10) Post-quantum signature proving this code came from the same private key as everything else signed under your signer ID — trust-on-first-use, like an SSH host key, not a real-world identity. Adds ~2.4–3.7 KB. Don't combine with "Encrypt" above — a signature is a persistent identity marker, the opposite of the deniability encryption is for (SPEC §10).

Target sector size (bytes per QR code, decoded)

Smaller = easier to scan, more codes if it doesn't fit in one. Larger = denser QR, fewer codes. Default 600 ≈ QR Version 17 (SPEC §6); the old default was 1300 (zoom required on many phones).

🔢 QDEF binary QR for sectors Byte-mode QR with QDEF framing header — camera-scan only, applies when content needs multiple QR codes. Uncheck to keep every sector (including the first) as a plain tagdrop: link you can paste or type by hand — costs a few extra bytes per code.

🛟 Add a parity recovery code One extra code that can reconstruct any single lost sector — applies only if content needs multiple QR codes

🔒 Encrypt this content (AES-256-GCM) Hides the real content inside an encrypted override map (SPEC §9)

Or upload a file (fills in filename, MIME type, and content below — binary files are stored as base64, matching the "(paste base64)" MIME options)

…or drag a file here

Content

Paper Metadata

Label (optional — name for this paper)

Set (optional — trail or network name)

Slug (optional — this paper's address within the set)

Step (optional — 1-based position within the Set trail above, e.g. "3" for the third stop — SPEC §4.3)

Domain (optional — human-readable name finders can type instead of the root hash, e.g. "helloworld" → tagdrop://helloworld; falls back to Slug above when absent — SPEC §7 "Domains". Avoid '@' — it's reserved syntax for marking a pinned root hash, e.g. tagdrop://helloworld@<hash>)

Description (optional — content teaser shown in the paper's directory, e.g. "Day 2 of the sunset trail: a poem and a hand-drawn map")

Icon (optional — emoji shown as a visual badge)

Collection label (optional — name for this paper's collection)

Collection ID (optional, hex — stamped onto the paper and every file code, see §7 Collections)

Collection tag (optional — short hashtag-style cross-reference)

Title (optional — short subject/caption, see §7 Postcards)

Replying to (optional, hex — cache_id/root_hash of the code this replies to, see §7)

Created at (optional — self-declared authoring time, taken from this device's clock; not verified)

Latitude (optional — this paper's own declared location, see §4.2)

Longitude (optional)

Location uncertainty radius (optional, meters)

Prefer declared location over live GPS For placements where the author's coordinates are more reliable than the scanning device's GPS fix (e.g. indoors)

🔏 Sign with ML-DSA-44 (SPEC §10) Post-quantum signature proving this paper came from the same private key as everything else signed under your signer ID — trust-on-first-use, like an SSH host key, not a real-world identity. Adds ~2.4–3.7 KB to the manifest.

Files on this Paper

Each file gets its own QR code. HTML files can reference other files on the same or different papers using absolute tagdrop:// links — the app intercepts these and serves the cached bytes inline, so images, audio, and SVGs load without a network connection:
<img src="tagdrop://@ROOTHASH/photo.jpg">
<audio controls src="tagdrop://@ROOTHASH/song.mid">
Slugs can contain / to mimic folder paths (e.g. images/photo.jpg) — they are matched as plain strings. A file too large for one QR code is automatically split into multiple sector codes, same as the Single File tab.

Target sector size (bytes per QR code, decoded)

Applies to every file and to the paper manifest. Smaller = easier to scan, more codes. Larger = denser QR, fewer codes. Default 600 ≈ QR Version 17 (SPEC §6). 🔢 QDEF binary QR for sectors Byte-mode QR with QDEF framing header — camera-scan only, applies to files/papers that need multiple QR codes. Uncheck to keep every sector (including the first) as a plain tagdrop: link you can paste or type by hand — costs a few extra bytes per code. 🛟 Add a parity recovery code One extra code per multi-sector file or paper manifest that can reconstruct any single lost sector

Drag files or a ZIP archive here to add them as pages

Paper Metadata

Files on this Paper

Related Papers (hints to other locations)