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Text CleanerBuild a reusable Unicode cleanup, extraction, and formatting pipeline for untidy text and lists.Remove Duplicate LinesDeduplicate lines while controlling case, whitespace, order, and blanks.Remove Empty LinesDelete blank rows or collapse them while preserving paragraph structure.Trim WhitespaceRemove unwanted leading or trailing whitespace with indentation control.Remove Extra SpacesNormalize repeated spaces, tabs, and non-breaking spaces safely.Sort LinesSort text alphabetically, naturally, numerically, or by length.Add Prefix and SuffixWrap, number, or punctuate every line with practical presets.Delimiter ConverterConvert lists between lines, commas, tabs, pipes, and custom separators.Compare Two ListsFind unique, shared, and duplicated items across two lists.Find and ReplaceReplace plain text or guarded regular-expression matches.Case ConverterSwitch text among readable, coding, path, and letter-case formats.Word, Character and Line CounterMeasure words, grapheme 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default.Unicode NormalizerNormalize text to NFC, NFD, NFKC, or NFKD and compare changed code-point positions.Unicode Code Point InspectorInspect characters or graphemes with code points, encodings, categories, positions, and export.JSON Formatter and ValidatorValidate JSON, pinpoint syntax errors, and format it with controlled indentation and Unicode output.JSON MinifierValidate JSON and remove insignificant whitespace while preserving string values exactly.JSON to CSVConvert an array of JSON objects to previewable, configurable CSV.CSV to JSONParse quoted CSV safely and convert rows to JSON objects or arrays.CSV Viewer and CleanerPreview, filter, reshape, clean, sort, and export CSV entirely in a Web Worker.Base64 Encode and DecodeEncode or decode UTF-8 text with standard Base64 or Base64URL.URL Encoder and DecoderEncode full URLs or URI components and decode percent-encoded text.HTML Entity Encoder and DecoderEscape HTML special characters or decode named and numeric entities.JWT 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or minify it.XML to JSONMap XML elements, attributes, and text nodes into JSON.Filter LinesKeep or remove lines using text, regex, numeric, or length rules.Column ExtractorExtract selected columns from CSV, TSV, pipe, whitespace, or custom-delimited text.Randomize LinesShuffle lines, take a random sample, or create repeated shuffled copies.Reverse LinesReverse line order, characters, whole text, or word order safely.Word Frequency CounterCount repeated words, unique words, ranks, counts, and percentages.CSV Validator and Data ProfilerInspect CSV structure, inferred types, empty cells, cardinality, and formula-like values.CSV Join and MergeJoin two CSV datasets by one or more keys with explicit duplicate and join rules.CSV Diff ViewerCompare two CSV datasets by key or row position and show changed cells.CSV Pivot and UnpivotReshape CSV data between long and wide layouts with transparent aggregation rules.CSV SplitterSplit a CSV by row count, approximate size, or column value and 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array to NDJSON or combine NDJSON records into a JSON arrayJSON to TypeScriptInfer TypeScript interfaces or type aliases from sample JSONQuery String Parser and BuilderParse query strings into key-value rows and rebuild encoded query stringsURL Parser and InspectorParse a URL into scheme, credentials, host, port, path, query, and fragmentHTTP Header ParserParse raw HTTP request or response headers and explain common fieldsCookie Parser and FormatterParse Cookie or Set-Cookie headers into names, values, and attributescURL ConverterConvert a pasted cURL command to Fetch or Axios and rebuild supported cURL commandsCron Expression ParserParse cron expressions, explain schedules, and show the next matching timesCron Expression GeneratorGenerate cron expressions from common scheduling controls and preview run timesSemantic Version ComparatorValidate, compare, sort, and explain semantic-version stringsSQL FormatterFormat SQL statements with configurable indentation and keyword caseSQL 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or decode binary byte sequences to textBase32 Encoder and DecoderEncode UTF-8 text to Base32 or decode Base32 input with validationBase58 Encoder and DecoderEncode UTF-8 bytes with Base58 and decode valid Base58 stringsUnicode Escape and UnescapeEscape text as Unicode sequences and decode supported escapes back to charactersJavaScript String Escape and UnescapeEscape or unescape text for JavaScript string and template literalsJSON String Escape and UnescapeEscape raw text for a JSON string or decode a valid JSON string valuePunycode and IDN ConverterConvert internationalized domain names between Unicode and Punycode formsROT13 and Caesar CipherEncode or decode ROT13 and configurable Caesar shiftsMorse Code ConverterEncode supported text as Morse code or decode Morse sequences back to textNumber Base ConverterConvert signed integers among binary, octal, decimal, hexadecimal, and custom basesScientific Notation ConverterConvert decimal values to scientific notation and expand exponent 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limitationsSyllable CounterEstimate English syllable counts and show uncertain words for manual reviewCloze Deletion GeneratorCreate fill-in-the-blank study text by selecting words or matching patternsFlashcard CSV FormatterFormat question-answer pairs as CSV or TSV for common flashcard applicationsBibTeX Formatter and ValidatorFormat BibTeX entries, detect duplicate keys, and report common field issuesRIS to BibTeXConvert RIS records into BibTeX entries with a visible field-mapping reportBibTeX to RISConvert BibTeX bibliography records into RIS with explicit field mappingDOI and Citation Identifier ExtractorExtract DOI, PMID, arXiv, and other scholarly identifiers from reference textISBN ValidatorValidate ISBN-10 and ISBN-13 check digits and convert compatible valuesReference List DeduplicatorIdentify likely duplicate references using DOI, title, author, and year signalsNumber List StatisticsCalculate count, sum, mean, median, mode, range, variance, and standard deviation from pasted numbersNumber Sequence GeneratorGenerate arithmetic sequences from start, end, step, count, or padding rulesRange Expander and CompressorExpand expressions such as `1-5,8,10-12` or compress integer lists into rangesBitwise CalculatorCalculate AND, OR, XOR, NOT, shifts, and integer representationsIPv4 Number ConverterConvert IPv4 dotted decimal to integer, hexadecimal, and binary forms and backCIDR CalculatorCalculate IPv4 network, broadcast, host range, mask, and address count from CIDR notationDate Range GeneratorCreate a list of dates between two endpoints with configurable intervals and formatsDate List GeneratorGenerate recurring dates from a start date, interval, and occurrence countDuration Parser and FormatterParse human-readable, numeric, and ISO 8601 duration formats and normalize themSMS Character CounterCount characters and estimate GSM-7 or Unicode SMS segmentsEmail Subject Line TesterMeasure email subject and preheader length and preview common truncation rangesWhatsApp Link GeneratorGenerate WhatsApp click-to-chat URLs from a phone number and optional messageCSV Formula Injection SanitizerNeutralize spreadsheet formula-like cells in pasted CSV without uploading the data.CSV Column Mapper and RenamerRename CSV headers and reorder selected columns locally.CSV to Markdown TableConvert a small CSV or TSV paste into a Markdown table.CSV Encoding and BOM InspectorInspect BOM markers, line endings, and byte-oriented clues in pasted CSV text.CSV Data Quality ReportProfile headers, row widths, empty values, and duplicate rows in a CSV paste.TSV and Delimited File ValidatorCheck whether delimited text has consistent columns and balanced quotes.Spreadsheet Date Serial ConverterConvert spreadsheet serial dates to ISO dates using an explicit date system.JSON and CSV Batch PreviewerPreview JSON records or CSV rows as a compact local report.CSP Header Builder and ValidatorBuild and inspect a Content-Security-Policy from pasted directives.SRI Hash GeneratorGenerate a browser-local SHA-256 Subresource Integrity token for pasted asset text.HTTP Security Headers AnalyzerAnalyze pasted HTTP response headers for common security controls.X.509 Certificate DecoderInspect pasted PEM certificate metadata locally.SSH Public Key Fingerprint InspectorInspect SSH public key format and calculate a local fingerprint.JWT Claims and Expiry InspectorDecode JWT claims and explain standard time claims without verifying a signature.JSON Web Key Set InspectorInspect a pasted JWK or JWKS structure without fetching remote keys.Environment Variable Secret ScannerScan pasted .env-style text for likely secrets and risky variable names.Markdown Table of Contents GeneratorGenerate a nested Markdown table of contents from heading lines.Markdown LinterCheck pasted Markdown for common heading, spacing, and list consistency issues.HTML Sanitization PreviewerPreview a conservative sanitized version of pasted HTML.HTML Accessibility CheckerCheck pasted HTML for common image, link, heading, and form labeling issues.Meta Title and Description PreviewerPreview title and description lengths for search and social snippets.robots.txt Generator and ValidatorGenerate and inspect robots.txt directives from pasted path rules.Sitemap XML Generator and ValidatorValidate pasted URLs and generate a simple local sitemap XML document.JSON-LD Formatter and ValidatorFormat pasted JSON-LD and check basic context and type structure.

184 tools available.

Data extraction

Email Extractor

Turn email addresses buried in notes or exports into a filtered, reusable list.

Processed locally. Your input and output are never uploaded.

Ready

Input0 lines · 0 characters
Output0 lines · 0 characters
OptionsAdjust how this tool processes your text
Email Extractor Options
Press Ctrl/Cmd + Enter to process

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Deduplicate lines while controlling case, whitespace, order, and blanks.

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Tool overview

How practical email patterns and domains are detected

Email Extractor identifies practical email-like addresses rather than claiming complete RFC mailbox validation. It preserves the first matched spelling, can retain nearby display names written with angle brackets, filters selected domains, and summarizes retained addresses by domain.

Collect and review contact addresses

  • Collect contact addresses from meeting notes
  • Filter a mixed export to one organization’s domains
  • Create a deduplicated recipient review list
  • Check malformed email-like candidates before import

Extract addresses from mixed notes

  1. Paste the text containing email-like addresses.
  2. Choose deduplication, sorting, and optional display-name behavior.
  3. Add include or exclude domain filters when needed.
  4. Review match and domain counts, then copy or download the extracted list.

Domains, display names, sorting, and deduplication

  • Case-insensitive deduplication treats differently capitalized addresses as the same practical address.
  • Display-name detection recognizes common Name <address> forms but does not parse a complete address-book format.
  • Domain filters accept commas, semicolons, spaces, or new lines and also match subdomains.
  • Output can use one address per line, commas, or semicolons.

Build a filtered email list

Before
Contacts: "Jane Doe" <Jane@Example.com>, support@example.com, jane@example.com, invalid@
After
Jane@Example.com
support@example.com

Syntax detection is not mailbox verification

  • The detector intentionally favors common real-world addresses over every RFC-valid construction.
  • International domain text is supported, while visually similar Unicode characters remain distinct.
  • Invalid-looking candidates are counted for review but are never included in output.
  • Domain filtering happens before output deduplication and sorting.

Browse all data extraction tools →

Questions

Email Extractor FAQ

Is every extracted address guaranteed to receive email?

No. The tool detects practical syntax locally; it does not contact mail servers or verify ownership.

Can I keep a person’s name with the address?

Yes. Enable display names for common forms such as Jane Doe <jane@example.com>.