File Health Checker
Instant automated diagnostics and 1-click repairs for CSV, JSON, Image, and PDF files. 100% private in your browser.
Upload any file to run diagnostic health check
Drop a CSV, JSON, Image (JPEG/PNG), PDF, or Text file • Automatic format detection
Why Automated File Health Diagnostics Matter
Data pipelines, analytics tools, web servers, and publishing systems break silently when input files contain subtle errors. A general search like "how do I check whether my CSV has duplicate rows?" provides syntax instructions, but real-world engineering requires inspecting the exact file in front of you:
1. CSV Ingestion & Database Integrity
Duplicate rows in CSV exports distort SQL aggregations and reporting metrics. Missing cells cause database schema exceptions during batch imports, and unvalidated date formats (such as mixed American MM/DD/YYYY and ISO formats) corrupt time-series models.
2. JSON Schema & Deep Nesting
API consumers frequently fail when JSON payloads feature inconsistent object schemas where certain keys exist only in a subset of items. In addition, null fields and empty strings needlessly bloat payload transfer sizes over mobile networks.
3. Image Optimization & Privacy
Smartphone camera photos average 4MB to 10MB in size and embed precise GPS coordinates and device serial numbers. For web publishing, modern WebP conversion reduces byte weight by over 70% while stripping private location metadata.
4. PDF Metadata & Document Sanitization
PDF documents created by word processors embed author names, local file directory paths, and software version histories. Sanitizing PDF metadata ensures legal compliance and removes accidental data leaks before public distribution.
Frequently Asked Questions
What file types can this File Health Checker diagnose?
The tool automatically identifies and inspects CSV, JSON, Images (JPEG, PNG, WebP, GIF), PDF documents, and plain text files. Each format receives a specialized diagnostic health audit tailored to its data structure.
What problems are detected in CSV spreadsheets?
For CSV files, it calculates total rows and columns, detects duplicate records, quantifies missing or empty cells, flags unparseable or out-of-range dates, identifies statistical numeric outliers using IQR, and checks for ragged rows with mismatched column counts.
How does the 1-click file repair and cleaning work?
After diagnosing issues, the tool allows you to automatically fix the problems with one click. For CSVs, it removes duplicate rows and trims whitespace. For JSON, it strips null fields and beautifies the structure. For Images and PDFs, it sanitizes sensitive EXIF and document metadata.
Is it safe to upload confidential business datasets?
Yes. All file inspection, error detection, and data cleaning run 100% locally in your web browser. No files, records, or metadata are ever transmitted across the network or stored on any server.