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45 tools 100% local No signup No tracking Free forever

Your text toolbox.
Local. Private. Free.

45 text utilities that run 100% in your browser. JSON formatter, password generator, UUIDs, find and replace, Base64, hashes, slugs, Lorem Ipsum and everything else you need to manipulate text day to day. No server, no account, no ads.

Nothing leaves your device. Ever.
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45
Utilities
all bilingual
7
Categories
every text job
100%
Local
every byte stays
0
Uploaded
ever, nothing
Live catalogue
45 tools, all in your tab
  • Add Prefix / Suffix
  • Add / Remove Line Breaks
  • Remove Duplicate Lines
  • Remove Empty Lines
  • Remove Extra Spaces
  • Remove Lines Containing…
  • Sort Text Lines
  • Letter Case Converter
  • Remove Letter Accents
  • Find and Replace Text
  • Merge Text Lines
  • Text Counter
  • Delimited Column Extractor
  • Gendered Keywords (Spanish)
  • URL List Cleaner
  • ASCII to Unicode Converter
  • Number Each Line
  • Binary Code Translator
  • Disemvowel Tool
  • Encryption Generator
  • Reverse Text
  • ROT13 Caesar Cipher
  • Word Scrambler
  • JSON Formatter and Validator
  • Base64 Encoder and Decoder
  • URL Encoder and Decoder
  • HTML Entities Encoder and Decoder
  • Combination Generator
  • Line Combination Generator
  • Permutation Generator
  • Sequential Number List Generator
  • Online Tally Counter
  • UUID v4 Generator
  • Strong Password Generator
  • Lorem Ipsum Generator
  • URL Slug Generator
  • Unix Timestamp Converter
  • SHA Hash Generator
  • HTML Tag Stripper
  • Markdown Stripper
  • JWT Decoder
  • Regex Tester (JavaScript Flavor)
  • Text Diff Comparator
  • CSV ↔ JSON Converter
  • Color Converter (Hex / RGB / HSL)

Browse by use case

Curated stacks with pro combos and a tool-by-tool justification.

For developers JSON, JWT, regex, hashes 12 tools curated For SEO Slugs, accents, keywords 10 tools curated For writers Words, case, citations 10 tools curated For data CSV, JSON, columns 10 tools curated
Complete catalogue

All 45 tools, on a single sheet

Every category with its full list. Direct click to any tool.

Basic text

15

Format

8

Obfuscation

6

Combinations

3

Numeration

3

Generators

4

Developer

6

All 7 categories

Every one of the 45 tools, grouped by family.

Basic text

15

Manipulate, clean and reshape lines of text. Sort, dedupe, replace, count, extract.

Add Prefix / SuffixInsert text at the start and end of every line.Add / Remove Line BreaksCollapse text into a single line, or split it into N words per line.Remove Duplicate LinesKeep only the first occurrence of each line.Remove Empty LinesStrip blank lines from a list or paragraph.Remove Extra SpacesTrim leading, trailing or duplicated spaces, your choice.Remove Lines Containing…Filter out (or keep) every line that matches a string or regex.Sort Text LinesSort alphabetically or numerically, asc or desc.Letter Case ConverterUPPER, lower, Title, Sentence, aLtErNaTiNg or iNVERSE.Remove Letter AccentsStrip diacritics from any letter, keep ñ if you want.Find and Replace TextLiteral or regex search & replace, with optional case sensitivity.Merge Text LinesInterleave 2 or 3 lists line-by-line with a custom separator.Text CounterLive counts for characters, words, sentences, lines and word frequency.Delimited Column ExtractorExtract one column from CSV, TSV or any delimited text.Gendered Keywords (Spanish)Classify Spanish keywords by gender and number, heuristic.URL List CleanerReduce a list of URLs to their root domain (no paths or queries).

Format

8

Convert between text encodings and data formats. JSON, Base64, URL, HTML, CSV.

ASCII to Unicode ConverterEncode text into code points (decimal, hex, JS escape) and back.JSON Formatter and ValidatorPretty-print, minify or validate JSON in your browser.Base64 Encoder and DecoderEncode any text to Base64 and back. UTF-8 safe, URL-safe variant supported.URL Encoder and DecoderPercent-encode strings for URLs and decode back. Component or full URI mode.HTML Entities Encoder and DecoderEncode <, >, & and friends to HTML entities, or decode them back.HTML Tag StripperRemove HTML tags from any text and keep only the readable content.Markdown StripperConvert markdown to plain text by stripping syntax markers.CSV ↔ JSON ConverterConvert CSV to JSON arrays of objects and back, with header detection.

Obfuscation

6

Hide, scramble or transform text for puzzles, demos and quick obfuscation.

Binary Code TranslatorConvert text to UTF-8 binary and back.Disemvowel ToolStrip every vowel from your text. Light obfuscation, big reduction.Encryption GeneratorThree classical ciphers (Caesar, Vigenère, XOR) for learning and puzzles.Reverse TextFlip your text character by character, works with emoji and accents.ROT13 Caesar CipherRotate every letter by 13 places. Apply twice to recover the original.Word ScramblerShuffle the letters inside each word. Random output every run.

Combinations

3

Generate every combination or permutation from input lists. With size guards.

Combination GeneratorCartesian product of 2 to 4 lists. Builds every combination automatically.Line Combination GeneratorPair lists line by line (zip). Useful for parallel data joining.Permutation GeneratorEvery reordering of N items, with size guard for factorial growth.

Numeration

3

Generate or annotate numeric sequences. Counters and ranges.

Number Each LineAdd sequential numbers (1., 2., 3.…) to every line.Sequential Number List GeneratorBuild a list of numbers from start to end with custom step, prefix, suffix and padding.Online Tally CounterMultiple named counters with +/-, custom step and local persistence.

Generators

4

Produce new content: passwords, UUIDs, slugs, lorem ipsum.

UUID v4 GeneratorGenerate cryptographically random UUID v4 identifiers in bulk.Strong Password GeneratorCryptographically random passwords with full character-set control.Lorem Ipsum GeneratorClassic placeholder text by words, sentences or paragraphs.URL Slug GeneratorConvert any text into a URL-safe slug. Unicode-aware, batch mode by line.

Developer

6

Inspect, decode and compare. Hashes, JWT, regex, diff, color.

Unix Timestamp ConverterConvert between Unix timestamps and human-readable dates. Live, multi-format.SHA Hash GeneratorCompute SHA-1, SHA-256, SHA-384 and SHA-512 hashes locally with Web Crypto.JWT DecoderDecode JSON Web Tokens to inspect the header and payload locally.Regex Tester (JavaScript Flavor)Test JavaScript regular expressions live with match highlighting and capture groups.Text Diff ComparatorCompare two texts line by line and visualise added, removed and unchanged lines.Color Converter (Hex / RGB / HSL)Convert between hex, rgb() and hsl() with live preview.
Privacy, in receipts

Same paste. Different planet.

Most online tools sell themselves as free. The price is your input. Here is the data flow side by side.

Most online tools

A typical online tool

Hosted parser, server-side processing, persistent logs.

  1. 01
    Paste your text You hit Run.
  2. 02
    POST /api/process Up to your full input over HTTPS.
  3. 03
    Server logs the body Stored 30 to 365 days, often longer.
  4. 04
    Maybe trained on Buried in the terms, where you did not look.
Every tool here

An AldeaCode utility

Pure JavaScript in your tab, no backend involved.

  1. 01
    Paste your text You hit Run.
  2. 02
    Zero network calls Open DevTools, watch the empty list.
  3. 03
    Browser does the work Same machine that ran the page.
  4. 04
    Result back to you Nothing left, nothing logged.

Receipt for this page

Outbound bytes since paste
0
Server-side processing
None
Persistence of input
Never
Telemetry / fingerprint
None

Verify it yourself.

Open DevTools, switch to the Network tab, paste anything into any tool. You will see no XHR, no fetch, no beacons. The Web Crypto and DOM APIs do all the work, in your tab.