Best Metadata Viewer Apps: View EXIF, Codec & Document Data (2026)
Every file on your computer carries a hidden second layer of information. A photo knows which camera shot it, the exact GPS coordinates, the lens, the shutter speed, and the date. A video knows its codec, frame rate, bitrate, and color profile. A PDF quietly stores its author, the software that created it, and timestamps you never set on purpose. Most of the time you never see any of it, until you need to. That is the moment a good metadata viewer app earns its place on your machine.
Maybe you are a photographer auditing camera settings, a video editor checking whether a clip is really 10-bit, a privacy-minded sender stripping GPS from images before posting, or just someone who wants to know why a file is mysteriously huge. Whatever the reason, the right metadata viewer app turns invisible data into something you can read, search, and act on. This guide walks through what file metadata actually is, the types you will run into, and the best metadata viewer apps for Mac, Windows, and the browser, with honest notes on where each one wins and where it falls short.
What Is a Metadata Viewer App?
A metadata viewer app is any tool that reads the embedded descriptive data inside a file and shows it to you in human-readable form, without altering the file's actual content. The pixels of your photo or the frames of your video stay untouched; you are just inspecting the labels attached to them.
The term covers a wide range of tools. On one end you have built-in operating system features like macOS Preview's Inspector or Windows File Properties. On the other end you have dedicated command-line powerhouses like ExifTool, GUI apps like MediaInfo, and browser-based extractors that run entirely on your device. They all answer the same question: what does this file know about itself?
Why People Use a Metadata Viewer
The use cases are surprisingly broad:
- Photographers and creators verify ISO, aperture, focal length, and white balance to learn from their own shots.
- Privacy-conscious users check for GPS coordinates and device serial numbers before sharing files publicly. (If that is you, our guides on removing EXIF data and removing metadata from a photo are worth a read.)
- Video editors and engineers confirm codec, container, bitrate, and color depth before committing to an edit or export.
- Legal, journalism, and forensics professionals use timestamps and authorship data as evidence or for verification.
- Anyone troubleshooting file size wants to know whether bloated metadata or an inefficient codec is the culprit.
The Three Types of Metadata You'll Encounter
Before picking a metadata viewer app, it helps to know what you are actually looking at. Metadata roughly falls into three buckets, and not every app handles all three equally well.
Image Metadata (EXIF, IPTC, XMP)
This is the most familiar category. EXIF (Exchangeable Image File Format) stores camera-generated data: exposure, ISO, focal length, GPS location, and the capture timestamp. IPTC and XMP add human-authored fields like captions, copyright, keywords, and creator name. A dedicated EXIF viewer is the right tool when photos are your main concern, and a general metadata extractor covers the broader set of image tags.
Video and Audio Metadata (Codec Info)
Video files store technical metadata that has nothing to do with cameras: the codec (H.264, HEVC, AV1, ProRes), the container (MP4, MOV, MKV), resolution, frame rate, bitrate, color space, and audio stream details. This is the data video professionals live by, and it is exactly where general image viewers fall short. If you work with footage regularly, a dedicated video metadata extractor will save you a lot of guesswork.
Document Metadata (PDF and Office Properties)
PDFs and Office files carry their own properties: title, author, subject, keywords, the application that produced them, and creation and modification dates. These fields routinely leak names and internal software details you would not want published. A focused PDF metadata viewer makes these properties visible, and our guide on removing metadata from a PDF covers the cleanup side.
The Best Metadata Viewer Apps in 2026
There is no single best metadata viewer app for everyone, because the right pick depends on what files you handle and how deep you need to go. Here are the tools worth knowing, organized from built-in to specialized.
Built-In Tools: macOS Preview & Finder, Windows Properties
The fastest metadata viewer is the one already on your computer. On macOS, open an image in Preview, press Cmd+I, and click the Inspector's "i" tab to see EXIF data, including a map pin if GPS is present. Finder's Get Info (Cmd+I) shows dimensions, resolution, and basic capture details without opening anything.
On Windows, right-click any file, choose Properties, and open the Details tab to view EXIF fields, document author, and media properties. These built-ins cost nothing and require no install, but they only scratch the surface, showing a curated subset rather than the full tag list, and they offer no batch processing.
Best for: quick one-off checks when you do not need every field.
ExifTool: The Power User's Standard
ExifTool by Phil Harvey is the industry reference. It is a free, open-source command-line tool that reads (and writes) metadata for over 500 formats, including images, video, audio, PDF, and raw camera files. Nothing else matches its completeness.
# View all metadata for a single file
exiftool photo.jpg
# Recursively view metadata for an entire folder
exiftool -r ~/Pictures
# Show only GPS-related tags
exiftool -gps:all photo.jpg
The trade-off is the learning curve. ExifTool is text-based and unapologetically technical. If you are comfortable in a terminal it is unbeatable; if you are not, the GUI options below will feel friendlier.
Best for: power users, scripting, batch audits, and exhaustive tag coverage.
MediaInfo: For Video and Audio Codec Data
MediaInfo is the go-to for technical video and audio inspection. It surfaces codec, container, bitrate, frame rate, color space, and per-stream details in a clean readout, in places where photo-focused viewers show nothing useful. It ships as both a GUI app and a command-line tool on Mac, Windows, and Linux.
Best for: video editors and encoding engineers who need codec and stream details fast.
GUI Metadata Viewers and Online Tools
If you want ExifTool's depth without the command line, several GUI front-ends (and ExifTool-powered desktop apps) present the same data in a clickable window. Online viewers like Metadata2Go, exif.tools, and similar services let you drag a file into the browser and read its tags instantly.
A genuine word of caution on the online route: privacy depends entirely on whether the tool processes files locally or uploads them. The better ones analyze metadata client-side in your browser and never transmit the file. If you are inspecting anything sensitive, prefer a desktop app or a confirmed local-only browser tool. Our free image metadata extractor tool runs entirely in your browser; the file never leaves your device.
Best for: occasional checks and users who prefer a visual interface over a terminal.
Compresto: Surface Media Metadata While You Optimize (Mac)
Compresto is a native macOS app built primarily for compressing video, images, PDFs, and GIFs, with hardware acceleration via VideoToolbox and Metal. It is not a dedicated metadata editor, and we will not pretend otherwise. What it does well is surface the media metadata that matters during optimization, so you can see a file's codec, dimensions, and format details right alongside the controls that change them.
That makes Compresto a natural fit when viewing metadata is one step in a larger goal, shrinking a file, converting a format, or batch-processing a folder, rather than the end in itself. For pure image inspection without installing anything, the companion image metadata extractor tool handles EXIF reads in the browser. And if you care about what metadata survives compression, our piece on modern image compression and metadata privacy digs into exactly that.
Metadata Viewer App Comparison
| Tool | Platform | Image EXIF | Video Codec | PDF/Doc | Interface | Best For |
|---|---|---|---|---|---|---|
| macOS Preview / Finder | Mac | Basic | No | Limited | Built-in GUI | Quick photo checks |
| Windows Properties | Windows | Basic | Basic | Yes | Built-in GUI | Quick checks, no install |
| ExifTool | Mac / Win / Linux | Full | Full | Full | Command line | Power users, scripting |
| MediaInfo | Mac / Win / Linux | No | Full | No | GUI + CLI | Video/audio codec data |
| Online viewers | Any (browser) | Full | Partial | Partial | Web | Occasional, no install |
| Compresto | Mac | Yes (media) | Yes | Basic | Native GUI | Viewing while compressing |
Online vs Desktop: Which Should You Choose?
The choice usually comes down to frequency and sensitivity.
Online viewers win on convenience. Nothing to install, works on any device, and great for a one-time "what's in this file?" check. The risk is privacy: some services upload your file to a server. Always confirm a tool processes data locally before feeding it anything personal or confidential.
Desktop apps win on privacy, power, and batch work. ExifTool, MediaInfo, and native apps like Compresto never send your files anywhere, handle hundreds of files at once, and dig deeper than any web form. If you inspect metadata regularly, or you handle anything sensitive, desktop is the safer default.
Frequently Asked Questions
What is the best free metadata viewer app?
For raw completeness, ExifTool is the best free metadata viewer app available; it reads over 500 formats and costs nothing. If you prefer a graphical interface, MediaInfo is excellent for video and audio, while macOS Preview and Windows Properties cover basic image and document checks with no install required.
Can I view video codec information with a metadata viewer?
Yes, but you need the right tool. Photo-focused EXIF viewers typically ignore codec data. MediaInfo and ExifTool both report codec, container, bitrate, frame rate, and color space. On Mac, Compresto also surfaces codec and format details while you optimize a video file.
Is it safe to use an online metadata viewer?
It depends on the tool. The safest online viewers process files entirely in your browser and never upload them; the rest send your file to a server. For sensitive documents, prefer a confirmed local-only tool or a desktop app. Our image metadata extractor runs locally in your browser, so the file never leaves your device.
How do I view EXIF data on a Mac without installing anything?
Open the image in Preview, press Cmd+I to open the Inspector, then click the "i" tab to view EXIF data, including GPS on a map. Finder's Get Info (Cmd+I) shows basic capture details too. For the full tag list, you will need ExifTool or a dedicated EXIF viewer.
Can a metadata viewer remove metadata too?
Viewing and removing are different jobs. Many viewers are read-only, while tools like ExifTool can also strip metadata. If your goal is cleanup, see our guides on removing EXIF data and removing metadata from a PDF for step-by-step approaches.
Bottom Line
The best metadata viewer app is the one that matches your files and your comfort level. For exhaustive coverage across every format, ExifTool is unmatched, if you are willing to live in the terminal. For video and audio codec details, MediaInfo is the specialist. For quick photo checks, your built-in Preview, Finder, or Windows Properties already do the job. And for browser-based image inspection with no upload, a local-only tool keeps your data private.
If you are on a Mac and metadata viewing is part of a bigger task, compressing footage, shrinking images, or cleaning up a folder of files, Compresto lets you see the media metadata that matters while you optimize, all natively and offline. Pair it with the free image metadata extractor tool for quick EXIF reads, and you have a privacy-respecting setup without juggling half a dozen apps. Try Compresto free and see your files, and everything they quietly carry, in one place.