Preview mode or app scripts blocked: the controls will not work in a static file preview. Download and open the HTML in Safari or Chrome, or use an HTTPS-hosted version.
plottagPROTOTYPE
Site photo toolkit
On-device processing
ACTIVE DEVELOPMENT
PHOTO PROCESSING

Make every photo plot-ready.

Import photos, assign a plot number, then watermark, rename and export in one batch.

01 / PHOTO EDITOR
0photos loaded
0assigned to plots
0plots in this batch

1. Add photographs

JPG · PNG · HEIC where supported
↑
Drop photos here or choose filesBulk select from your phone or computer
Your imported photos will appear here. Select multiple photos to assign them together.

2. Assign photos to a plot

iOnly plots registered on this development appear here. Add new plots under Plots & map.

3. Output options

Assigned plot GPS is always embedded in exported JPEGs. Original camera and location metadata is removed. Export requires valid saved coordinates for the selected plot.
Watermark size and position, filename format and JPEG quality can be changed in .

Live preview

First assigned photo
▧

Assign a photo to see the watermark

—No GPS selected
READY TO EXPORT0 photos

Assigned photos will be downloaded as JPEGs in a ZIP file.

Save to iPhone Photos

Prepare individual watermarked JPEGs, then open the iPhone share sheet. Choose Save Images if it appears. Safari may not offer this option on every iOS version.

Requires Safari on a secure (HTTPS) website. Your images remain on your device.

If Save Images is missing: use Download ZIP above, unzip it in Files, select the JPEGs and tap Share → Save Images.

SITE GEOLOCATION

Register plots as you walk.

Stand on a plot slab and save your current location, or select a position manually on the map.

02 / REGISTER PLOTS
Move the map to position a pin
+
Imagery © Esri and contributors
Drag to move · Pinch to zoom · Tap to centre · Satellite images may be outdated

Add a plot

LOCATION REQUIRED
Advanced

Position the map crosshair over the plot, then save that location in one tap.

MAP CENTRE (CROSSHAIR)
52.000000, -1.500000
Move the map to select the plot location before saving.

Saved plots

0
No plots added yet. Capture GPS or select a map pin to save your first plot.
EXPORT PREFERENCES

Settings.

Set your preferred watermark appearance and file export format once. Changes are saved automatically in this browser.

03 / SETTINGS

Watermark appearance

PLOT NUMBER

Choose how the plot label will appear when watermarks are enabled in the photo editor.

File export

JPEG OUTPUT

Control the filename pattern and JPEG compression applied when you export a batch.

Every exported JPEG has its original EXIF and camera metadata removed, then receives the GPS coordinates and plot identifier of the assigned registered plot. The new EXIF date/time is when you tap Export or Prepare JPEGs for iPhone. Your source photo is never modified.
My DevelopmentsView, switch and remove developments saved in this browser.1
Deleting a development removes its saved plots and filename counters on this device. Back up your sites first.
Clear registered plot locations for the active development only. Other developments, settings and filename counters are kept. Back up plots first.
Preferences save automatically.
PLOTTAG v1.11 PROTOTYPE • Local-first • Imagery services require internet access • For test use only

About this prototype

PlotTag processes your images entirely in your browser. Photo files are not uploaded to a server.

Site names, plot pins and filename counters are saved in this browser’s local storage. Export a JSON backup if you need to keep them.

For the buttons to work, open the downloaded HTML in a real browser rather than a static preview. For live GPS on an iPhone, host the site using HTTPS and allow Precise Location in Safari. Plot registration now requires coordinates; assigning photo watermarks still works without registering any plot. Maps and satellite imagery require internet access.

On iPhone, ZIP exports appear in Files/Downloads, not Photos. The new iPhone share option attempts to open iOS sharing for individual JPEGs, but Safari may omit Save Images; in that case unzip the ZIP in Files and use Share → Save Images. Exports are new JPEG files. The app always embeds the selected registered plot’s GPS coordinates and plot ID as new EXIF and stamps the new JPEG with the export/prepare time. Original GPS, camera, lens, date/time and other input metadata are discarded. Always verify exported evidence before relying on it.