Free Text & Code tools.
Text & Code tools that run entirely in your browser — no upload, no signup, no limits. Free, private & offline-ready.
Word Counter
Live word, character, sentence & reading-time counts.
FreeCase Converter
UPPER, lower, Title, camelCase, snake_case & more.
FreeText Diff
Compare two texts and highlight every change.
FreeLorem Ipsum
Generate placeholder text by words, sentences or paragraphs.
FreeJSON Formatter
Beautify, minify & validate JSON instantly.
FreeCSV ↔ JSON
Convert CSV to JSON and back, in the browser.
FreeBase64 Encode/Decode
Encode & decode text and files to/from Base64.
FreeHash Generator
SHA-1/256/384/512 of text or files via Web Crypto.
Free Text & CodeUUID Generator
Generate v4 UUIDs and ULIDs in bulk.
FreeRegex Tester
Test regular expressions with live match highlighting.
FreeMarkdown Editor
Write Markdown with live preview & export to HTML.
Free Text & CodeJWT Decoder
Decode a JWT’s header & payload locally (no data sent).
Free Text & CodeURL Encoder & Parser
Encode/decode URLs and break them into query parameters.
Free Text & CodeTimestamp Converter
Convert Unix timestamps ↔ human dates across time zones.
FreeNumber Base Converter
Convert between binary, octal, decimal & hexadecimal.
Free Text & CodeCSV Viewer & Editor
Open a CSV as a sortable, filterable, editable table — export to CSV/JSON.
Free Text & CodeYAML ↔ JSON
Convert YAML to JSON and back, right in your browser.
Free Text & CodeCron Expression Helper
Translate a cron expression to plain English and preview the next run times.
FreeCode Formatter
Beautify or minify JSON, CSS, HTML & JavaScript locally.
Free Text & CodeText & File Encryptor
Password-encrypt text or files with AES-256 (Web Crypto) — fully offline.
FreeHTML ↔ Markdown
Convert HTML to Markdown and Markdown to HTML, locally.
FreeHTML Entities Encoder
Encode & decode HTML entities and escape special characters.
FreeMarkdown Table Generator
Build a Markdown (or CSV/HTML) table from an editable grid.
FreeRoman Numeral Converter
Convert numbers to Roman numerals and back (1–3,999,999).
Free Text & CodeText Cleaner & Line Tools
Sort, dedupe, reverse, trim, find-replace & reformat lines of text.
Free Text & CodeCode Playground
Write HTML, CSS & JS with a live preview and console — a local CodePen.
Free Text & CodeSQL Playground
Run SQL on an in-browser SQLite database; import CSVs as tables (one-time engine download).
FreeAbout these text & code tools
Free text & code tools that run 100% in your browser — Word Counter, Case Converter, Text Diff, Lorem Ipsum, JSON Formatter and more. No upload, no signup, works offline. By Digital Heroes. Every tool runs locally on your device, so your files never leave your computer, and the whole collection installs as an offline app. Explore all HeroTools or pick one above to get started.