EXIF Data Viewer

Preview EXIF ​​data online. Quickly check photo metadata and GPS coordinates

ExifViewer loads files and presents key EXIF ​​metadata in an easy-to-read layout. View the camera manufacturer and model, shooting date, exposure parameters, orientation, software version and GPS position converted to decimal notation. The tool runs locally on the server side and does not modify the content of files.

See how it works

What ExifViewer shows and who it's useful for

EXIF ​​metadata is a hidden layer of information attached to image files by cameras and software. They contain technical and descriptive data that aids in archiving, analysis, and debugging. ExifViewer organizes this information and provides it in table form with each file upload. This is a solution for photographers, social media managers, editorial offices, lawyers and e-commerce teams who need to quickly confirm the origin and parameters of photos.

• Instant preview of EXIF ​​fields without installing additional plugins.
• GPS in decimal notation to facilitate location verification.
• Exposure parameters for analyzing the repeatability and quality of sessions.
• Verify orientation and editing software information.
• No modification to original files and no compression.

How the tool underneath works

The Livewire component responds to file uploads and builds a card for each item with a thumbnail, name, size and metadata table. The backend uses theexif_read_datafunction available in PHP if the EXIF ​​extension is enabled. Interesting keys are selected from the raw EXIF, IFD0 and GPS sections and the values ​​are cleared of empty fields. GPS coordinates are converted from degrees minutes seconds to decimal format, which simplifies further use, for example in maps.

// Action shortcut
updatedLocalFiles():
  for each file:
    download realPath
    exif = exif_read_data(realPath, null, true)
    select: Make, Model, DateTimeOriginal, Orientation, Software,
             ExposureTime, FNumber, ISOSpeedRatings, FocalLength, GPS
    gps -> DMS is decimal with sign correction for S and W
    save set to items[]

render():
  build cards with a key -> value table for each file

What EXIF fields do we present

Instructions for use

1. Instructions for Use Select images in JPG, PNG or TIFF format. You can drag multiple files at once.
2. Wait for the preview tabs to appear. For each file you will see a thumbnail, name, size and a table with metadata.
3. If you see GPS in the table, copy the decimal coordinates and use in maps or reports.
4. To start over, click Clear Results.

Interpreting key fields

• ExposureTimespecifies the exposure time, for example 1/125 s. Helps assess the risk of blur.
• FNumberis the aperture, for example f/2.8. It affects the depth of field and exposure.
• ISOSpeedRatingsinforms about the sensitivity of the matrix. Higher ISO usually means more noise.
• FocalLengthindicates the focal length, which tells you the angle of view and perspective compression.
• Orientationsuggests how the browser might rotate the image. When publishing, it is worth forcing the target orientation on the front.

Input parameters and limits

GPS conversion insight

private function gpsToDecimal($coord, $ref) {
  $toFloat = function($part) {
    if (is_string($part) && strpos($part,'/')!==false) {
      list($n,$d) = array_map('floatval', explode('/',$part,2));
      return $d != 0 ? $n / $d : 0.0;
    }
    return floatval($part);
  };
  $deg = $toFloat($coord[0] ?? 0);
  $min = $toFloat($coord[1] ?? 0);
  $sec = $toFloat($coord[2] ?? 0);
  $sign = in_array($ref, ['S','W']) ? -1 : 1;
  return round($sign * ($deg + $min/60 + $sec/3600), 6);
}

FAQ

Do all formats contain EXIF ​​

No. EXIF is most common in JPG and TIFF. PNG may have limited or no metadata. If the file does not contain EXIF, we will show a missing data message.

Why can't I see exposure fields

Some applications erase or modify EXIF ​​during export. If the parameters are empty, the file source may have deleted them.

How to understand the GPS result

The coordinates are given as latitude and longitude in decimal degrees. For the southern and western hemispheres the numbers are negative. Paste them into maps to get a point on the plan.

Does the tool change file

No. ExifViewer only reads the metadata and builds the preview. If you need cleaning, use the dedicated EXIF ​​Remover.

Is data protected

Files are processed within the server instance. We do not modify the content and do not publish it without your action. The retention policy depends on the application configuration.

Best practices for working with EXIF ​​

• Before publishing, review the GPS fields and remove them if you do not want to reveal your location.
• Keep your camera settings consistent to make it easier to compare exposure between shots.
• In image editors, control EXIF ​​behavior options during export.
• For product materials, consider unifying the orientation at the export stage.
• In operational reports, include decimal coordinates next to the original DMS if required.

Troubleshooting

• Blank metadata preview. The file does not have EXIF ​​or the EXIF ​​extension in PHP is disabled.
• GPS does not appear in the list. The hardware did not save the coordinates or they were deleted in post-production.
• Unreadable values ​​of type 1/125. This is a fraction representing the shutter speed. We leave the original format to be faithful to the source.
• Different orientation between preview and frontend. Some browsers interpret Orientation differently. Establish rotation on the UI side.

Example uses of

• Photo provenance audit. Verification of the camera model and software that edited the file.
• Session quality analysis. Summary of FNumber, ISO and shutter speed to detect errors.
• Field reports. Quickly copy GPS coordinates in documents and mapping systems.
• Compliance and GDPR. Checking that a file does not reveal sensitive information before publishing.

Implementation tips

The tool does not require additional external services. To get the full experience, make sure the EXIF ​​extension in PHP is enabled. Thumbnails are generated from temporary data provided by the browser. Large TIFF files may take up more memory, so test on a sample before mass use.

ExifViewer is used for data inspection. If you need automatic cleaning, use the EXIF ​​remover in the same kit. When publishing sensitive material, always check the GPS and Software fields.

Check EXIF now