Frequently Asked Questions

GPSnap is a web-based GPS-enabled image capture and comparison tool. It uses your device's camera and GPS to capture photos with embedded location data (coordinates, address, timestamp). All processing happens locally in your browser - no uploads, no data storage on servers. Simply visit the website, grant camera and location permissions, and start capturing professionally documented images.

No! GPSnap works entirely in your web browser. There's no app to download and no account required. Simply visit gpsnap.com from any device with a camera and GPS capability (smartphone, tablet, or laptop with GPS). This also means your privacy is protected - we never store your data or require personal information.

GPSnap works on any modern device with a camera and GPS capabilities, including: smartphones (iOS and Android), tablets, laptops with webcams and GPS, and desktop computers with external cameras and location services. The tool requires a modern web browser like Chrome, Safari, Firefox, or Edge with support for camera and geolocation APIs.

Absolutely not. GPSnap processes everything locally in your browser. Your images and GPS data NEVER leave your device. We don't have servers to store images, we don't collect user data, and we have zero access to your photos. When you capture an image, the GPS data is embedded directly into the photo on your device, and you download it to your own storage.

You can access GPSnap without location permissions, but the GPS overlay features won't work. The core value of GPSnap is embedding location data on images. Without location access, you can still use the image comparison tool to compare before/after photos you've already taken, but you won't be able to capture new GPS-tagged images.

The GPS data is embedded as a visual overlay on your image (text printed on the photo itself), not in EXIF metadata that can be easily stripped. This makes it tamper-proof and permanent. However, remember that anyone who receives the image can see the location data - it's visible on the photo. Only share GPS-tagged images with trusted parties or when location disclosure is appropriate.

The GPS overlay can include: GPS coordinates (latitude and longitude), location accuracy radius, timestamp (date and time), street address (via reverse geocoding), altitude (if available from GPS), and heading/direction (if available). You can customize which fields to display and the overlay position (top or bottom of image) in the capture settings.

GPS accuracy depends on your device and environment. In ideal conditions (clear sky, modern device), accuracy can be 5-10 meters. In urban areas or indoors, it may be 20-50 meters or more. GPSnap displays the accuracy radius on each captured image, so you know the precision level. For best accuracy, use the tool outdoors with a clear view of the sky and wait a few seconds after opening the camera for GPS to stabilize.

Yes! The image comparison tool accepts any images uploaded from any source - whether captured with GPSnap, taken with a regular camera, or from a different device entirely. Simply upload your "before" and "after" images, and you can use the slider, side-by-side, or overlay comparison modes. The tool works with JPG, PNG, and other common image formats.

GPSnap offers three comparison modes: 1) Slider Mode (50/50) - drag a slider to reveal before/after portions of images overlaid on each other, perfect for seeing precise changes. 2) Side-by-Side Mode - view both images next to each other for simultaneous comparison. 3) Fullscreen Mode - view either image in fullscreen for detailed examination. Each mode serves different analysis needs.

Common issues: 1) Browser permissions - check that you've granted camera and location access in your browser settings. 2) HTTPS required - camera/GPS only work on secure connections (https://). 3) iOS Safari - may require specific permissions in Settings > Safari. 4) GPS signal - go outdoors or near a window for better GPS reception. 5) Browser compatibility - use a modern browser (Chrome, Safari, Firefox, Edge). Check the browser console for specific error messages.

Partially. Once the page is loaded, the core capture and comparison features work offline since everything runs in your browser. However, the reverse geocoding feature (converting GPS coordinates to street addresses) requires an internet connection to query the OpenStreetMap API. You'll still get GPS coordinates offline, just not the human-readable address.

For capture: images are generated as PNG format with embedded GPS overlays. For comparison: the tool accepts JPG, JPEG, PNG, WebP, and most common image formats. The maximum recommended image size is 10MB per image for optimal performance, though larger images may work depending on your device's memory.

Contractors can capture images of completed work with GPS data proving they were at the job site at the specified time. This is valuable for: verifying work location for billing, creating timestamped documentation for insurance or liability purposes, providing clients with verified proof of service completion, and maintaining records for warranty or compliance purposes. The GPS overlay can't be easily faked, providing authentic verification.

While GPSnap creates tamper-resistant location documentation, whether it's admissible in legal proceedings depends on jurisdiction and specific requirements. The GPS overlay is visibly embedded in images and difficult to alter without obvious signs. Many users successfully use it for insurance claims, property damage documentation, and field inspections. However, for critical legal matters, consult with legal counsel about documentation requirements in your jurisdiction.

Absolutely! GPSnap is ideal for property documentation. Capture images during move-in with GPS verification of the property location and timestamp. Compare with move-out images to identify any damage. The GPS data proves the photos were taken at the specific property address, preventing disputes about image authenticity. The before/after comparison tool makes it easy to identify changes in property condition.

Yes! GPSnap is completely free to use with no hidden fees, subscriptions, or premium tiers. All features are available to all users. We don't monetize your data (we don't collect any) or charge for functionality. The service is supported by optional non-intrusive advertising. Our mission is to provide professional GPS documentation tools accessible to everyone.

No usage limits! You can capture and compare as many images as you want. Since everything processes locally on your device and we don't store anything, there's no server capacity to worry about. The only practical limit is your device's storage space for downloaded images and browser memory for processing very large images (10MB+ per image may be slow on older devices).

The street address requires reverse geocoding via OpenStreetMap's Nominatim API. If you see coordinates but no address: 1) Check your internet connection - address lookup requires online access. 2) The location may be remote without a registered street address. 3) The API may be temporarily unavailable. 4) Rate limiting - if you're capturing many images rapidly, wait a few seconds between captures. GPS coordinates are more reliable than addresses.

Image quality depends on your device's camera. Tips: 1) Clean your camera lens. 2) Ensure good lighting - use in daylight or well-lit areas. 3) Hold the device steady when capturing. 4) Use a device with a high-quality camera. 5) Check browser camera settings - some browsers limit resolution for web apps. 6) On mobile, try landscape orientation for better composition. GPSnap uses your device's maximum available camera resolution.

Yes! In the capture interface, you can customize: which data fields to display (time, coordinates, address, altitude, accuracy), overlay position (top or bottom of image), font size (small, medium, large), and background transparency. These settings are saved in your browser for future sessions. Future updates may include additional customization options based on user feedback.

Currently, GPSnap processes one image at a time to maintain quality and accuracy. This ensures proper GPS lock for each capture and gives you control over each shot. For workflows requiring many images, you can capture them sequentially - the camera stays active between shots for faster workflow. Batch processing may be considered for future versions based on user demand.

The comparison tool currently allows you to view and analyze images in various modes. You can take screenshots of the comparison views for reports. We're considering adding export functionality for side-by-side composite images in future updates. Currently, it's recommended to capture screenshots of your desired comparison view for documentation purposes.

We welcome feedback! Use the contact form on our website to report bugs, suggest features, or ask questions. When reporting bugs, please include: your device type (phone/tablet/computer), operating system (iOS/Android/Windows/Mac), browser name and version, specific steps to reproduce the issue, and any error messages. We read all feedback and prioritize improvements based on user needs.

Yes! Visit our How-To Guides page for step-by-step tutorials on capturing GPS images, using comparison tools, customizing overlays, and troubleshooting common issues. We also have a Best Practices guide with tips for getting the most accurate GPS data, optimal image quality, and professional documentation workflows. Check our Resources section for industry-specific guides.