// every page, one list
Sitemap
Every tool on Delint, grouped by what it works on. Everything here runs entirely in your browser — nothing is uploaded.
Text & data cleanup
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Text cleaner
Strip hidden formatting, tracking spans, and font tags from text pasted out of Word, Google Docs, or a webpage — outputs clean plain text or Markdown.
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CSV cleaner
Auto-detects the delimiter, repairs ragged rows, trims stray whitespace, and exports a clean CSV.
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Encoding fixer
Fixes mojibake and double-encoded UTF-8 (’, é), and normalizes Unicode.
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JSON fixer
Repairs common JSON syntax errors — trailing commas, single quotes, unquoted keys, comments — and pretty-prints the result.
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Mail checker
Scans pasted email text or HTML for common phishing red flags — urgency language, mismatched links, lookalike domains.
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MultiValue unpacker
Splits raw UniData/UniVerse/D3/jBase exports (item, field, value, and subvalue marks) into a clean CSV or nested JSON.
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Delimiter splitter
Reparses a delimited text file with any separator — comma, tab, pipe, semicolon, or custom — and exports clean columns.
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Contact detail splitter
Splits messy one-line contact entries — name, relationship, phone, and address run together — into clean Name, Relationship, Phone, Address, and Postcode columns.
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Encoding & line-ending fixer
Detects mixed character encodings and inconsistent line endings, then normalizes the file to clean UTF-8.
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JSON ↔ CSV converter
Converts a JSON array of objects to CSV/XLSX, or a CSV/XLSX file into JSON, in either direction.
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Merge & fill-down cleaner
Unmerges merged Excel cells and fills blanks downward from the last real value above.
Spreadsheet tools
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Sheet cleaner
Removes hidden characters, unusual spaces, and extra whitespace from text cells in an Excel workbook.
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Column splitter
Splits one xlsx column into several, by delimiter or fixed width.
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Split into tabs
Groups rows by a column's value and fans them out into separate tabs in one workbook.
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Row chunker
Splits a file into evenly sized chunks by rows-per-file or by a fixed number of files, header repeated in each.
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Typed Excel exporter
Sets a type per column before exporting to XLSX, so Excel doesn't silently mangle postcodes, phone numbers, or leading-zero IDs.
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File combiner
Merges several CSV or XLSX files with matching headers into one, for stitching chunked exports back together.
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Date/time normalizer
Detects mixed date formats — Excel serials, epoch, DD/MM vs MM/DD — and converts a column to ISO 8601.
Data matching & validation
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Duplicate finder
Flags likely duplicate rows using cascading match logic across email, name, and phone.
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Header fuzzy matcher
Maps messy column headers onto a canonical set using fuzzy string matching.
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Reference list checker
Validates every value in a column against a canonical list and flags anything that doesn't match closely.
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Phone/postcode formatter
Normalises UK phone numbers or postcodes to a consistent format and flags entries that don't look valid.
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Sort code / account checker
Checks UK sort codes and account numbers for correct format and a heuristic modulus-11 checksum.
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Luhn checker
Validates numbers against the Luhn checksum — one at a time, as a check-digit generator, or across a whole file column.
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File diff
Compares two versions of the same export and reports what's added, removed, or changed.
Location & communications
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Postcode proximity grouper
Geocodes UK postcodes and splits addresses into a chosen number of spreadsheet tabs, grouping the closest together.
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Mail merge previewer
Fill a template with
{{field}}placeholders from a CSV of recipients, then preview or export per row.