Private Markdown converter
that runs in your browser.
Convert files and pasted content to Markdown for docs, READMEs, RAG and LLM context. HTML, PDF, DOCX, XLSX, CSV, JSON and more are processed locally with no account and no upload.
All to Markdown
The Markdown converter is the primary workspace for turning local documents, exports and tables into clean Markdown for docs, READMEs, RAG and LLM context.
Markdown
Convert files and preview Markdown locally.JSON
Format, convert and inspect JSON.Encoding
Base64, URL, HTML entities and more.Text
Case, diff, dedupe, transform.Crypto
Hashing and token tools — all in your browser.Generators
UUIDs, lorem, QR codes and more.- UUID GeneratorGenerate UUIDs, ULIDs and NanoIDs in bulk — locally and instantly.
- Mock Data GeneratorGenerate users, orders and product fixtures as JSON, CSV or SQL — locally in your browser.
- QR CodeGenerate QR codes for URLs, Wi-Fi credentials and text — fully offline.
- Lorem IpsumGenerate placeholder text by words, sentences or paragraphs.
Color
Convert and inspect color values.Web
Regex and other web helpers.Time
Timestamps, cron, time zones and date math.- Timestamp ConverterConvert Unix timestamps to human dates and back with local and UTC output.
- Timestamp NowSee the current Unix time in seconds, milliseconds, ISO and RFC formats.
- Cron ParserExplain cron expressions and estimate the next run times in your browser.
- Time Zone ConverterConvert meeting times between UTC, New York, London, Tokyo and more.
- Date DifferenceCalculate days, hours, minutes, weekends and rough business days between dates.
- Date CalculatorAdd or subtract days, weeks, months and years from a starting date.
- CountdownSee how long remains until a date and time in days, hours, minutes and seconds.
- ISO 8601 ConverterValidate and convert ISO 8601, local time, UTC and RFC 2822 strings.
- Discord TimestampGenerate Discord <t:...> timestamp tags for relative and localized times.
- Duration ConverterConvert seconds, minutes, hours, days and weeks with human-readable output.
- Week NumberFind the ISO week number, weekday and day-of-year for any date.
- Age CalculatorCalculate exact age and next birthday countdown from a birth date.
Mock data for tests and demos
Generate synthetic users, orders and products as JSON, CSV or SQL. Use it for QA fixtures, seed data, documentation examples and local demos without using real customer records.
Mock data generator
Create users, orders and products locally in your browser.
Random CSV generator
Generate small CSV samples for imports, spreadsheets and parser tests.
SQL insert generator
Draft local fixture rows as simple INSERT statements.
Sample JSON generator
Create readable JSON arrays for API docs and frontend tests.
Time, timestamp and cron tools
inbrowser.sh includes browser-side utilities for Unix epoch conversion, current timestamps, cron expression explanation, time zone conversion, date differences, countdowns, ISO 8601 validation and Discord timestamp tags.
Unix timestamp converter
Convert seconds or milliseconds since 1970-01-01T00:00:00Z into UTC, local time and ISO 8601.
Cron expression parser
Explain five-field cron syntax and calculate the next five runs in a selected IANA time zone.
Time zone converter
Interpret a source wall-clock time in one zone and compare UTC, New York, London, Tokyo and more.
Cron preset pages
Static reference pages answer searches like what does */5 * * * * mean with examples and related schedules.
Built for everyday developer chores
inbrowser.sh focuses on small, repeatable tasks that interrupt real work: cleaning JSON, decoding tokens, converting identifiers, comparing snippets, generating IDs, and preparing shareable QR codes.
Private by design
Tool logic runs in the browser, so pasted API responses, config snippets, JWT payloads, and draft text do not need to be uploaded for processing.
Reviewable outputs
Every tool page includes plain-language guidance, examples, FAQs, and related tools so users can inspect what the tool does before copying results into their workflow.