| No metadata appears | The file may not contain tags, may have been stripped by an export application or may use unsupported properties. | Check basic file type and size, inspect a known original and test a supported format. Do not assume that missing tags establish authenticity or damage. |
| GPS coordinates are not displayed | The device may have disabled location tagging or a platform may have removed the coordinates. | Look for EXIF GPS fields in the original image. If absent, the viewer cannot reliably infer the location from metadata alone. |
| GPS map does not load | Map tiles or geocoding services can require network access or may be blocked by browser and privacy settings. | Check connectivity and permissions, then inspect the coordinate values directly if maps remain unavailable. Avoid sharing coordinates publicly. |
| HEIC or RAW fields are incomplete | Modern image containers and proprietary camera maker notes are not uniformly supported. | Inspect the original file, update the browser and compare with a dedicated camera metadata utility when specialist tags are required. |
| Image orientation seems incorrect | EXIF orientation flags can differ from the pixels or have been removed during an export. | Check the orientation tag and view the file in an editor that honors it; if needed, create a corrected copy before sharing. |
| PDF shows little information | The file may be encrypted, damaged, flattened or missing document properties. | Verify the PDF in a trusted viewer, open it with authorized credentials if required and retry inspection with a readable copy. |
| PDF author appears wrong | Metadata may come from a template, a previous contributor or an export application. | Check the author and creator fields against trusted records; remove or correct them with an authorized document editor if necessary. |
| Office document does not parse | Older formats, password protection or malformed Office packages can limit extraction. | Open the document in a compatible editor, save an authorized current-format copy and inspect again without altering the original. |
| MP3 title or artwork is missing | Some audio tags are blank, nonstandard or damaged, or the artwork is not embedded. | Review the original with a dedicated tag editor and confirm where the title and artwork are stored before attempting to update tags. |
| FLAC or OGG metadata is partial | The file may use uncommon comments or unsupported metadata blocks. | Look for standard tags, test a representative file and use specialist software for the omitted fields. |
| Video codec or duration is missing | The video container may have an incomplete index, unusual track layout or an unreadable header. | Confirm playback with a compatible media tool, then inspect a repaired or correctly finalized authorized copy if appropriate. |
| A large video freezes the tab | Full-file reads, hashing or complex parsing can exhaust browser memory and CPU. | Close other heavy tabs, inspect fewer files, avoid unnecessary algorithms and use a capable desktop utility when files exceed practical browser limits. |
| File extension does not match detected format | The file may be mislabeled, renamed incorrectly or contain unexpected data. | Do not execute unknown files. Confirm the source and expected format with trusted tools before renaming or sharing. |
| MD5 or SHA-512 is not available | A browser may skip expensive optional hash calculations for large files or device limitations. | Use SHA-256 if available, or a reliable local hashing utility with the algorithm required by your verification process. |
| Hash differs from the publisher value | The downloaded bytes may differ, the published reference may be wrong or the wrong algorithm may have been used. | Recheck the exact file and algorithm, obtain the reference from a trusted source and re-download securely if required. |
| Two seemingly identical photos have different hashes | Resaving, metadata edits or compression can alter bytes even when pictures look alike. | Compare dimensions and tags, and use a dedicated visual similarity workflow if you need perceptual rather than byte-identical grouping. |
| Clean copy is not available | The format may not support the viewer’s cleaner or proprietary fields may prevent safe rewriting. | Use a specialized cleaner for the format, keep the source unchanged and inspect the resulting copy before publishing. |
| Cleaned photo still reveals location | Visible landmarks, filename clues, thumbnails or remaining unsupported tags can reveal details. | Review visible content and all metadata groups, not just EXIF GPS; consider removing or cropping identifying details where appropriate. |
| Cleaned file differs in color or rotation | Removing tags or re-encoding can affect orientation or color profile interpretation. | Compare the cleaned copy visually, verify dimensions and profile behavior and choose a preservation-oriented workflow if fidelity is critical. |
| CSV export has unexpected columns | Different file types use different metadata families and field naming conventions. | Inspect the table or JSON view, select a stable set of fields in your downstream spreadsheet and verify exported values. |