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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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ConverterValidate JSON5, format it, minify it, and convert it to strict JSON locally.JSON Diff ViewerCompare two JSON documents and explain added, removed, changed, and type-changed valuesJSON MergeMerge two or more JSON objects while controlling conflicts, arrays, and null valuesJSON Flatten and UnflattenFlatten nested objects into path-value pairs or reconstruct nested JSON from flat keysJSON Sort KeysSort JSON object keys recursively or at selected depths without changing valuesJSONPath TesterRun JSONPath expressions against pasted JSON and inspect matched values and pathsJSON Pointer EvaluatorResolve, build, and explain RFC 6901 JSON Pointer pathsJSON Schema GeneratorInfer a JSON Schema from one or more sample JSON documentsJSON Schema ValidatorValidate a JSON instance against a pasted JSON Schema and show precise failing pathsNDJSON Formatter and ValidatorValidate one JSON value per line, format records, and locate invalid NDJSON rowsJSON Array and NDJSON ConverterConvert a JSON 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while preserving readable base charactersEmoji ExtractorExtract emoji sequences, count them, and preserve their original orderEmoji RemoverRemove emoji sequences while preserving ordinary Unicode text and nearby spacingHashtag ExtractorFind hashtag-like tokens, normalize them, and summarize frequencyMention ExtractorExtract `@username`-style mentions and report unique values and frequencyDomain ExtractorFind domain and hostname values in URLs, email addresses, and plain textDate ExtractorExtract date-like values in selected formats and optionally normalize them to ISO outputPhone Number NormalizerClean punctuation and normalize phone numbers using a selected default countrySlug GeneratorConvert titles or labels into configurable URL-friendly slugsFilename SanitizerReplace or remove characters that are unsafe across common operating systemsHex Encoder and DecoderEncode UTF-8 text as hexadecimal bytes or decode valid hex back to textBinary Text ConverterEncode UTF-8 text as binary bytes 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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expansionJSON to ENVConvert a compatible JSON object into dotenv-style key-value linesSKU GeneratorGenerate configurable SKU values from product attributes, prefixes, counters, and random segmentsSKU Cleaner and NormalizerNormalize separators, capitalization, whitespace, and allowed characters in SKU listsInvoice Number GeneratorGenerate invoice numbers from prefixes, dates, sequences, and padding rulesUTM Builder and CleanerAdd, inspect, edit, remove, and normalize UTM campaign parametersBulk Filename PlannerCreate a previewable rename plan from pasted filenames without touching local filesFull Name SplitterSplit full-name strings into configurable first, middle, and last-name fieldsContact CSV MergerMerge contact CSV exports using email, phone, or selected identifiersProduct Title CleanerClean product titles by normalizing whitespace, punctuation, case, and repeated promotional phrasesReadability Score CalculatorCalculate common English readability scores and explain their 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.

Business data utilities

Contact CSV Merger

Merge contact CSV exports using email, phone, or selected identifiers

Processed locally. Your input and output are never uploaded.

Ready

Contacts CSV A0 lines ยท 0 characters
Contacts CSV B0 lines ยท 0 characters
Output0 lines ยท 0 characters
OptionsAdjust how this tool processes your text
Contact CSV Merger Options
Press Ctrl/Cmd + Enter to process

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Tool overview

How Contact CSV Merger works

Contact CSV Merger provides a browser-local implementation for the documented workflow. It keeps the result visible, reviewable, and separate from the input while following PasteTidy's privacy and claims limits.

Contact CSV Merger workflows

  • Run Contact CSV Merger on pasted work data
  • Prepare local text or structured data for the next PasteTidy tool
  • Document a repeatable browser-local cleanup or conversion step

Use Contact CSV Merger locally

  1. Paste the source text or data.
  2. Review the local result generated in the output editor.
  3. Copy or download the result when it matches the intended workflow.

Contact CSV Merger assumptions and controls

  • This implementation uses a conservative local default for the documented task.
  • The input and output remain separate so destructive changes are reviewable.
  • No user content is placed in the URL, analytics payloads, or local history.

Contact CSV Merger example

Before
Input ยท List A:
email,name,city
ana@example.com,Ana,Jakarta
bo@example.com,Bo,Bandung

Input ยท List B:
email,name,phone
ana@example.com,Ana Putri,+628111111
ci@example.com,Ci,+628222222
Result
email,name,city,phone
ana@example.com,Ana,Jakarta,+628111111
bo@example.com,Bo,Bandung,
ci@example.com,Ci,,+628222222

Contact CSV Merger limits and excluded claims

  • Do not sync with external contact providers or silently combine uncertain matches.
  • Ambiguous or format-specific input may need manual review after processing.
  • This page intentionally avoids guarantees outside the visible local result.

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Questions

Contact CSV Merger FAQ

Does Contact CSV Merger upload my input?

No. Processing runs locally in your browser and no upload endpoint is used.

What does Contact CSV Merger not verify?

Do not sync with external contact providers or silently combine uncertain matches.

Can I use the output immediately?

Review the result first, especially when the source format is ambiguous or destructive cleanup was involved.