Files Tools

Inspect the structure, encoding and contents of a local file in your browser. Nothing is uploaded.

CSV File Inspector Reports what a CSV file actually contains, and where the rows that break it are.
File Encoding Detector Tells you whether a text file is plain ASCII, clean UTF-8, or already damaged.
File Head and Tail Viewer Shows the first and last lines of a file with their line numbers, and nothing in between.
Fixed Width File Inspector Infers the column layout of a fixed width file when nobody can find the copybook.
Invisible Character Finder Finds the characters you cannot see, and gives each one a line and column.
JSON File Inspector Says whether a JSON file is valid, where it breaks, and what shape it is.
Log File Summarizer Turns a wall of log lines into level counts, a time span and the messages that repeat.
NDJSON File Inspector Validates every line of a JSON Lines file and finds the keys that drift between records.
Processing happens locally in your browser. What you paste or load is processed by this page and is not uploaded to a server. Nothing is stored unless you use a control that says it stores something, and you can clear anything this site has kept from the privacy page.