📁 File & Data Converters
28 free tools, all running in your browser. No sign-up.
📁 CSV Cleaner
Upload or paste CSV and fix inconsistent quoting, trim whitespace, strip BOM, and remove empty rows in your browser.
Open Tool →📁 CSV Duplicate Row Remover
Find and remove exact duplicate rows from a CSV, matching on all or just the columns you pick, keep-first or keep-last.
Open Tool →📁 CSV Merger
Combine multiple CSV files with the same columns into one file, with a clear warning if headers don't match.
Open Tool →📁 CSV Column Reorder & Rename
Reorder, rename, or remove CSV columns visually and export the result — no spreadsheet software needed.
Open Tool →📁 CSV Row & Column Stats
Get row/column counts and per-column min/max/average or unique/blank counts for any CSV, instantly in your browser.
Open Tool →📁 Random Sample Generator from CSV
Pull an unbiased random sample of rows from a CSV by count or percentage, with an optional reproducible seed.
Open Tool →📁 Fixed-Width Text ↔ CSV Converter
Convert fixed-width column text to CSV and back, with auto-computed or manually specified column widths.
Open Tool →📁 .env ↔ JSON Converter
Convert a .env file to a flat JSON object and back, handling quoted values, comments, and the export prefix.
Open Tool →📁 .ini ↔ JSON Converter
Convert INI-format config files to nested JSON by section and back, in your browser.
Open Tool →📁 TOML ↔ JSON Converter
Convert TOML config files to JSON and back, with clear errors on unsupported TOML features like multi-line strings.
Open Tool →📁 YAML Validator
Paste YAML and get a clear valid/invalid verdict with a line-number pointer to the first indentation or syntax problem.
Open Tool →📁 Markdown Table ↔ CSV Converter
Convert a Markdown table to CSV, or CSV to a neatly aligned Markdown table, in your browser.
Open Tool →📁 CSV ↔ Excel XML Converter
Convert CSV to an Excel-readable SpreadsheetML XML file and back, no ZIP library or server round-trip needed.
Open Tool →📁 Plain Text to CSV Column Splitter
Split plain-text lines into CSV columns using a custom delimiter or regex pattern, with a live preview table.
Open Tool →📁 ZIP Creator & Extractor
Build a .zip from multiple files, or extract and download files from an existing .zip, all in your browser.
Open Tool →📁 File Splitter (by size)
Split any large file into smaller numbered chunks by size, entirely client-side — nothing is uploaded.
Open Tool →📁 File Joiner
Rejoin split file parts back into the original file, with automatic ordering by part number.
Open Tool →📁 File Hash / Checksum Verifier
Compute a file's SHA-1, SHA-256, or SHA-512 hash in your browser and verify it against an expected checksum.
Open Tool →📁 Base64 File Encoder & Decoder
Encode any file to Base64 or a data: URI, or decode a Base64 string back into a downloadable file.
Open Tool →📁 Binary ↔ Hex Viewer
View any file as a classic hex dump with an ASCII sidebar, or convert pasted hex bytes back into a binary file.
Open Tool →📁 File Type Detector (Magic Bytes)
Detect a file's real type from its magic bytes and flag when it doesn't match the file's extension.
Open Tool →📁 vCard (.vcf) Viewer & Editor
Parse, edit, and regenerate vCard contact files, including multiple phone numbers and emails per contact.
Open Tool →📁 iCal (.ics) Event Generator
Fill in an event's details and download a valid .ics calendar file, with optional recurrence.
Open Tool →📁 JSON Schema Validator
Validate JSON data against a JSON Schema and get a list of every failure with its exact path in the data.
Open Tool →📁 JSON Pretty-Print with Sort Keys
Pretty-print JSON with a configurable indent and an option to recursively sort every object's keys alphabetically.
Open Tool →📁 CSV ↔ SQL INSERT Statements
Convert CSV rows into SQL INSERT statements, or parse INSERT statements back into CSV, with proper escaping.
Open Tool →📁 Log File Splitter & Filter
Filter a log file by pattern, line range, or timestamp range, and split it into smaller chunks.
Open Tool →📁 CSV/Text Data Anonymizer
Mask or pseudonymize chosen CSV columns locally in your browser — a simple masking tool, not a PII detector.
Open Tool →