Desktop Software · PC & Mac

Annotate any photo.
No Photoshop.
No learning curve.

FieldMarker lets you load any photo and mark it up with professional tools — arrows, polygons, measurements, text — and export as JPG in seconds.

Works on any photo — floor plans, site shots, inspection images

17 professional tools, no setup required

Calibrate real distances directly on the photo

Save your work, reload later, export as JPG

macOS Apple SiliconFree Download Windows x64Free Download

✓ Apple Silicon (M1/M2/M3/M4) · ✓ Windows 10/11 x64 · ⚠ Intel Mac coming soon

Download FieldMarker Free See How It Works

✓ Free forever · ✓ No account required · ✓ No ads, no tracking

FieldMarker annotation software on screen

17 tools · Real-world measurements · JPG export

The problem

Marking up a photo
shouldn't take an hour.

Photoshop is overkill You just need to draw a few arrows and add measurements. Not design a poster.

Screenshot tools are too basic No real measurement tools, no file saving, no professional output.

Web-based tools need internet You're on a job site, in a client meeting, or offline. It fails you exactly when you need it.

The solution

FieldMarker does one thing,
and does it perfectly.

A focused desktop tool built specifically for professionals who need to annotate photos — fast, precise, and offline. No bloat. No learning curve.

Opens in seconds, works immediately

Fully offline — no internet needed

Professional JPG output every time

Real-world measurements on any photo

How it works

Three steps to a perfect annotation.

No tutorials. No setup. Open FieldMarker, load your photo, start marking.

📂

Open your photo

Drag & drop any image — JPG, PNG, PDF, HEIC, TIFF. FieldMarker opens it instantly.

✏️

Annotate with precision

Choose from 17 tools — arrows, polygons, measurements, text, rulers. Mark exactly what needs marking.

💾

Export & share

Save your project as .pcc to edit later. Export as high-quality JPG ready to send.

Who uses FieldMarker

Built for anyone who works with photos.

If you've ever needed to mark something on a photo and struggled to find a simple tool, FieldMarker is for you.

🏠

Real Estate & Appraisal

Annotate floor plans, mark property boundaries, add measurements to appraisal reports.

🏗️

Construction & Engineering

Mark up site plans in the field, document defects, communicate with teams visually.

🔍

Inspection & Survey

Document findings directly on photos. Create professional reports in minutes.

Real estate professional using FieldMarker

Real Estate & Appraisal

Mark up floor plans and property photos with precision

Construction & Field Work

Annotate site plans directly in the field

Features

Everything you need.
Nothing you don't.

FieldMarker is intentionally focused. Every feature earns its place.

Precision at your fingertips

Works on any screen.
Designed for real work.

Whether you're at your desk or reviewing on-site, FieldMarker's interface is clean, fast, and distraction-free. Load your photo, pick your tool, start marking.

Calibrate real-world scale on any photo

Unlimited undo & redo

Color control for every annotation

Save as .pcc project, reload and edit anytime

Crop & rotate before annotating

High-quality JPG export

📐

Real Measurements

Calibrate scale using a known distance. Every ruler shows real units.

🔄

Unlimited Undo

Make mistakes freely. Full undo/redo history, always.

💾

Save & Reload

Save your work as .pcc, come back and keep editing anytime.

🎨

Full Color Control

Every tool has customizable colors. Match your brand or report style.

✂️

Crop & Rotate

Prepare your image before annotating. No external editor needed.

🖼️

JPG Export

Export clean, high-resolution JPG files ready for reports or sharing.

📁

Any Image Format

Opens JPG, PNG, WebP, HEIC, TIFF, PDF. Whatever you have.

📴

Fully Offline

No internet. No cloud. Your photos stay on your machine.

17 Professional Tools

The right tool for every annotation.

Every tool has a keyboard shortcut. Work fast without ever touching the mouse.

↗️

Arrow

📐

Polygon

💬

Bubble

⬛

Filled Rect

➖

Line

✂️

Crop

Text

◯

Circle

X Mark

⌒

Arc

⌓

Semicircle

📏

Ruler

📐

Angle Mark

✏️

Freehand

🖱️

Select

🧹

Eraser

✋

Pan

Inside the App

Built like a tool. Not a toy.

Every panel, every menu, every shortcut — designed for speed.

FieldMarker main toolbar with primary annotation tools — **Main toolbar** 9 primary tools, one click away. Every tool has a keyboard shortcut.

FieldMarker extended tools panel with surveying shapes — **Specialized shapes** L-shapes, structural columns (U-D, U-E), spiral, ruler, angle mark. Built for the field.

FieldMarker file menu showing Open Project, Save Project, JPG export with quality slider — **Project files (.fmp)** Save your work as a project, reload later. Export JPG with quality control.

FieldMarker settings menu with 8 language options and license status — **8 languages built in** Türkçe, English, Español, Français, Deutsch, Русский, العربية, Português.

FieldMarker right panel showing photo rotation, scale calibration, and operations — **Real-world scale** Calibrate from a known distance. 1 pixel = X meters. Every ruler & area calculation follows.

FieldMarker color picker, font selector, and bubble background options — **Style anything** 9-color palette, multiple fonts, bubble backgrounds with opacity. Match your brand.

Download

Free forever. Yours to keep.

No subscriptions. No trials. No payment, ever.

FieldMarker

100% Free

PC & Mac desktop application. Works completely offline. No account required. Notarized by Apple for macOS.

17 professional annotation tools
Real-world measurement calibration
Unlimited undo & redo
Save & reload projects (.pcc)
JPG, PNG, WebP, HEIC, TIFF, PDF input
High-quality JPG export
Crop & rotate tools
Full color control
Works completely offline
All future updates included
No ads, no telemetry, no tracking

macOS Apple SiliconFree Download Windows x64Free Download

Does it work offline? +

Yes — completely. FieldMarker is a desktop app with no internet requirement. Your photos never leave your machine.

What image formats are supported? +

JPG, PNG, WebP, HEIC, TIFF and PDF. FieldMarker handles whatever you throw at it.

Is it really free? What's the catch? +

No catch. FieldMarker is 100% free — no trial, no subscriptions, no in-app upgrades. The desktop apps are notarized by Apple and code-signed for Windows, so install warnings won't appear.

What operating system does it support? +

Works on PC (Windows 10 and 11) and Mac (Apple Silicon, notarized). Install on as many machines as you like.

Need help? +

Email support@catheadai.com any time. Feature requests welcome.

Community

Reviews & Requests

Share your experience or let us know what you'd like to see next.

No reviews yet — be the first!

Honest feedback from real users only. Nothing fake here.

Annotate any photo.
No Photoshop.
No learning curve.

See it in action.

Marking up a photo
shouldn't take an hour.

Three steps to a perfect annotation.

Built for anyone who works with photos.

Real Estate & Appraisal

Construction & Field Work

Everything you need.
Nothing you don't.

Works on any screen.
Designed for real work.

The right tool for every annotation.

Built like a tool. Not a toy.

Free forever. Yours to keep.

Reviews & Requests

Stop using Photoshop
for a 5-minute job.

Annotate any photo.No Photoshop.No learning curve.

See it in action.

Marking up a photoshouldn't take an hour.

Three steps to a perfect annotation.

Built for anyone who works with photos.

Real Estate & Appraisal

Construction & Field Work

Everything you need.Nothing you don't.

Works on any screen.Designed for real work.

The right tool for every annotation.

Built like a tool. Not a toy.

Free forever. Yours to keep.

Reviews & Requests

Stop using Photoshopfor a 5-minute job.

Annotate any photo.
No Photoshop.
No learning curve.

Marking up a photo
shouldn't take an hour.

Everything you need.
Nothing you don't.

Works on any screen.
Designed for real work.

Stop using Photoshop
for a 5-minute job.