Check your file
Run the full ARADURU diagnosis with detailed file checks, technical results, and recommended next steps.
Analyzing your file...
Checking the file structure.
ARADURU is checking this file.
Waiting for the diagnosis.
Wait for the browser-side check to finish.
Building your troubleshooting path.
Waiting for the problem context.
Waiting for the file check.
Waiting for the next step.
WHY ARADURU SAYS THIS
Review file evidence and details
File facts, recovery guidance, and technical checks stay here until you need them.
Show details
Your file at a glance
ARADURU will suggest the safest next action after the file check finishes.
File identity evidence
Technical details View file checks
File checks available today
One browser-based doctor, with format-specific checks for the files below. The exact checks change depending on the file type.
Excel File Check
Inspect workbook packaging, XML structure, worksheet parts, archive integrity, and extension mismatches.
Open XLSX checker →Word File Check
Check the Word package, main document XML, relationships, archive integrity, and filename mismatches.
Open DOCX checker →PowerPoint File Check
Inspect presentation XML, slide parts, package integrity, and whether the real format matches the extension.
Open PPTX checker →PDF File Check
Check the PDF signature, version, EOF marker, page tree, password protection, and browser parsing.
Open PDF checker →ZIP File Check
Inspect archive readability, CRC32 integrity, file counts, unpacked size, and unusual expansion ratios.
Open ZIP checker →GZIP File Check
Inspect GZIP headers, decompression, CRC32 integrity, ISIZE, original filename, and expansion ratio.
Open GZIP checker →TAR File Check
Inspect TAR header checksums, member sizes, data boundaries, block padding, end markers, and extraction-path warnings.
Open TAR checker →Video File Check
Inspect MP4 or QuickTime container boxes, tracks, duration, resolution, codecs, and truncated structures.
Open video checker →Image File Check
Inspect PNG, JPEG, GIF, WebP, BMP, and TIFF structure, dimensions, frame count, truncation, and extension mismatches.
Open image checker →Data File Check
Check structured-data syntax, XML well-formedness, CSV delimiters, rows, columns, encoding, and extension mismatches.
Open data checker →Text File Check
Check text encoding, BOM markers, line endings, empty files, and binary-looking control characters.
Open text checker →More than a file extension check
ARADURU combines common structural checks with format-specific diagnostics, then explains what the result means in plain language.
Wrong file extension
Detect when the filename says one format but the internal structure matches another supported format.
Unreadable or invalid structure
Identify files that use a supported-looking extension but do not contain the expected internal structure.
Incomplete or truncated files
Look for missing end markers, invalid container boundaries, or parsing failures that can indicate an incomplete copy.
Archive integrity
For supported ZIP-based formats, run integrity checks when practical and report structural failures separately.
Password protection
Distinguish a protected PDF from a damaged PDF so password protection is not reported as corruption.
Unusual archive expansion
Warn when a ZIP may expand to far more data than its compressed size suggests without automatically labeling it malicious.
Format-specific metadata
Surface useful details such as worksheet counts, PDF pages, image dimensions and frames, or video resolution, duration, and codecs when available.
Clear next steps
Turn technical findings into practical actions while preserving a separate Technical details section.
From file to diagnosis in three steps
Choose the problem file
Drop the file into ARADURU or choose it from your device.
Analyze it in your browser
The supported checker reads the structure and metadata needed for the diagnosis.
See what to do next
Get a plain-language diagnosis first, with technical details available separately.
Your selected file stays in your browser.
For the checks currently supported on this page, ARADURU analyzes the selected file locally in your browser and does not upload the file itself to the ARADURU server.
The current beta may load JavaScript libraries from third-party CDNs, but your selected file is not sent to those libraries' servers by the checker.