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Guides · 75 guides

Learn the tools, concepts, and techniques.

Practical, no-fluff explainers for the tools on Toulino and the ideas behind them — how they work, when to reach for them, and the gotchas to avoid.

PASTEClipboard → MDGUIDECLIPBOARDPasted contentMARKDOWN# Clean MarkdownPaste from anywhere
Tool Guides2 min read

How to convert clipboard content to Markdown

Paste whatever is on your clipboard — a doc, a table, a web snippet — and get Markdown instantly. The fastest path from "I copied something" to clean text.

Jun 22, 2026
DOCSBadgesGUIDELABEL + STATUSbuild · passingBADGE MARKDOWN![build](shield)
Tool Guides2 min read

How to add badges to a Markdown README

Generate the small status badges that sit at the top of a README — what they signal, which ones earn their place, and how to keep them honest.

Jun 22, 2026
SYNTAXCheatsheetGUIDE# H1Heading**b**Bold- xList item`c`Inline codeThe whole syntax on one card
Tool Guides3 min read

The Markdown syntax cheatsheet

Every Markdown construct you actually use, in one place — headings, emphasis, lists, links, code, tables, and the GitHub-flavored extras worth knowing.

Jun 22, 2026
COMPAREMD DiffGUIDE # Notes-old line+new line end
Tool Guides2 min read

How to compare two Markdown documents

See exactly what changed between two versions of a Markdown file — added and removed lines, side by side — without needing Git or a code editor.

Jun 22, 2026
CLEANUPFormat MDGUIDE#Bad heading * item# Bad heading - item
Tool Guides2 min read

How to format and clean up Markdown

Normalize messy Markdown into consistent, tidy source — fixing spacing, list markers, and heading style so your documents stay clean and diff well.

Jun 22, 2026
LINKSLink CheckerGUIDE#intro✓ found#gone✗ missing[x]()✗ emptyVerifies internal anchors
Tool Guides3 min read

How to check links in a Markdown document

Catch broken anchors, empty links, and duplicates in your Markdown before you publish — what a browser-based checker can verify, and what it cannot.

Jun 22, 2026
ESTIMATEReading TimeGUIDE1,200 ÷ 200 wpm=6 min15%Counts prose, ignores syntax
Tool Guides2 min read

How to estimate reading time for a Markdown post

Add a "6 min read" estimate to your articles — how reading time is calculated, why 200 words per minute is the usual baseline, and where it misleads.

Jun 22, 2026
EXPORTMD → TextGUIDEMARKDOWN**bold** [link](url)PLAIN TEXTbold linkSyntax removed for email & SMS
Tool Guides2 min read

How to convert Markdown to plain text

Strip the syntax out of Markdown to get clean, readable plain text — for emails, SMS, plain-text fields, and anywhere the raw symbols would show through.

Jun 22, 2026
MARKDOWN TEXTWord CountGUIDE1,240words6,800characters7 minread timeparagraph lengths
Tool Guides2 min read

How to count words in Markdown (not the syntax)

Count the actual prose in a Markdown document while ignoring the syntax — so your word count reflects what readers read, not the hashes and asterisks.

Jun 22, 2026
CONVERTObsidian → MDGUIDEOBSIDIAN[[Wiki Link]]STANDARD MD[Wiki Link](wiki-link.md)Wikilinks, callouts, embeds
Tool Guides3 min read

How to convert Obsidian Markdown to standard Markdown

Translate Obsidian-flavored notes — wikilinks, embeds, and callouts — into standard Markdown so they render correctly on GitHub, blogs, and other tools.

Jun 22, 2026
PASTERich text → MDGUIDEWORD / DOCSBold + a linkMARKDOWN**Bold** + [a link](#)Drops fonts & colors
Tool Guides2 min read

How to convert rich text to Markdown

Paste formatted text from Word, Google Docs, or a web page and get clean Markdown — keeping the bold, links, and lists while dropping the hidden styling.

Jun 22, 2026
IMPORTText → MDGUIDEPLAIN TEXT1. Not a listSAFE MARKDOWN1\. Not a listEscapes # * _ ` so nothing misfires
Tool Guides2 min read

How to convert plain text to Markdown

Turn a plain .txt file into safe, well-formed Markdown — with special characters escaped so nothing in your text accidentally becomes formatting.

Jun 22, 2026
FORUMSBBCode → MDGUIDEBBCODE[b]bold[/b]MARKDOWN**bold**
Tool Guides2 min read

How to convert BBCode to Markdown

Rescue forum posts written in BBCode into clean Markdown — ideal for migrating a community, archiving threads, or republishing old guides on a modern site.

Jun 21, 2026
RELEASESChangelogGUIDECHANGESadded: X fixed: YKEEP A CHANGELOG## [1.2.0] ### Added
Tool Guides2 min read

How to write a changelog

Turn a list of changes into a clean, versioned changelog entry grouped by type — following the Keep a Changelog convention your users already understand.

Jun 21, 2026
DOCSLicenseGUIDELICENSE + HOLDERMIT · Ada · 2026README SECTION## License MIT
Tool Guides2 min read

How to add a license section to your README

Generate a clean License section for your README — pick an SPDX license, set the holder and year, and point to your LICENSE file the right way.

Jun 21, 2026
FORUMSMD → BBCodeGUIDEMARKDOWN**bold**BBCODE[b]bold[/b]
Tool Guides2 min read

How to convert Markdown to BBCode

Post formatted text to forums that use BBCode by converting your Markdown first — the tag-based syntax, and why drafting in Markdown is still easier.

Jun 21, 2026
DOCSProfile READMEGUIDEABOUT YOUName + bioUSERNAME/USERNAME# Hi, I'm AdaShows on your GitHub profile
Tool Guides3 min read

How to make a GitHub profile README

Create the special README that shows on your GitHub profile — where it goes, what to put in it, and how to keep it from going stale.

Jun 20, 2026
CONVERTJira → MDGUIDEJIRA MARKUPh1. TitleMARKDOWN# Title
Tool Guides2 min read

How to convert Jira markup to Markdown

Move Jira-formatted tickets and comments into clean Markdown — for migrating to a new tool, archiving issues as docs, or reusing content outside Jira.

Jun 20, 2026
CONVERTMD → JiraGUIDEMARKDOWN# Title **bold**JIRA MARKUPh1. Title *bold*
Tool Guides2 min read

How to convert Markdown to Jira markup

Paste Markdown into Jira without losing formatting by converting it to Jira wiki markup first — the syntax differences that trip people up, and a clean workflow.

Jun 20, 2026
DOCSREADMEGUIDEPROJECT INFOName + descriptionREADME.MD# Project ## Install ## Usage
Tool Guides3 min read

How to write a great README

Generate a complete, well-structured README from a few fields — and learn which sections actually matter, in what order, for a project people will use.

Jun 20, 2026
STRUCTURENumber HeadingsGUIDEHEADINGS# Intro ## ScopeNUMBERED# 1. Intro ## 1.1 Scope
Tool Guides2 min read

How to number headings in Markdown

Add automatic section numbering (1, 1.1, 1.2) to your Markdown headings — the standard for specs, manuals, and academic documents that need cross-references.

Jun 19, 2026
STRUCTUREOutlineGUIDEDOCUMENT# A ## B ## CSKELETONA B CHeadings only
Tool Guides2 min read

How to generate a document outline from Markdown

Extract just the headings of a long Markdown document to see its skeleton — the fastest way to check structure, spot gaps, and plan a reorganization.

Jun 19, 2026
TABLESMD → CSVGUIDEMD TABLE| A | B | | 1 | 2 |CSVA,B 1,2Open in any spreadsheet
Tool Guides2 min read

How to convert Markdown to CSV

Lift the tables out of a Markdown document into CSV you can open in Excel, Google Sheets, or any database — and what to check when columns contain commas.

Jun 19, 2026
DATAYAML → MDGUIDEYAMLtitle: DocsMARKDOWN**title**: DocsReadable config reviews
Tool Guides2 min read

How to convert YAML to Markdown

Render YAML — config files, front matter, CI pipelines — as a readable Markdown document so non-engineers can review it without parsing indentation.

Jun 19, 2026
DATAJSON → MDGUIDEJSON{ "name": "Ada" }MARKDOWN**name**: AdaRecords become tables
Tool Guides3 min read

How to convert JSON to Markdown

Render JSON data as a readable Markdown document — turn API responses, config, and exports into lists and tables a person can actually read.

Jun 18, 2026
DIAGRAMSMermaidGUIDEMERMAID CODEgraph TD A-->BDIAGRAMA → BFlowcharts, sequences & more
Tool Guides3 min read

How to preview Mermaid diagrams in Markdown

Write a diagram as text with Mermaid and see it render — flowcharts, sequences, and more, from a few lines of code, right in your browser.

Jun 18, 2026
DATAMD → YAMLGUIDEMARKDOWN# TitleYAMLtitle: Title
Tool Guides2 min read

How to convert Markdown to YAML

Represent a Markdown document as YAML — the human-friendly data format behind front matter and config — and know when YAML is the right target.

Jun 18, 2026
STRUCTURETable of ContentsGUIDEHEADINGS## Setup ## UsageCLICKABLE TOC- [Setup](#setup) - [Usage](#usage)
Tool Guides3 min read

How to generate a table of contents in Markdown

Build a clickable table of contents from your headings automatically — with anchor links that jump to each section, and a note on keeping it in sync.

Jun 18, 2026
RENDERLive PreviewGUIDEMARKDOWN## Title - a - bRENDEREDTitle • a • b
Tool Guides2 min read

How to preview Markdown live

Paste Markdown and see exactly how it will render — the fastest way to check formatting from GitHub, a README, or an AI response before you publish it.

Jun 17, 2026
DATAMD → JSONGUIDEMARKDOWN# Title - itemJSON{ "h1": "Title" }Document structure as data
Tool Guides3 min read

How to convert Markdown to JSON

Turn a Markdown document into structured JSON you can process with code — what the structure looks like, and when treating prose as data is the right move.

Jun 17, 2026
CLIPURL → MDGUIDEWEB PAGEexample.com/articleMARKDOWN# ArticlePaste HTML — runs in-browser
Tool Guides3 min read

How to convert a web page (URL) to Markdown

Turn an article into clean Markdown by converting its page HTML — how the browser-only, CORS-aware workflow works, and the paste-the-HTML trick that always succeeds.

Jun 17, 2026
WRITEMD EditorGUIDEYOU TYPE# Hello **world**LIVE PREVIEWHello (rendered)Toolbar · shortcuts · preview
Tool Guides3 min read

How to use a Markdown editor with live preview

Write Markdown with a toolbar, keyboard shortcuts, and a side-by-side preview — so you see the formatted result as you type, without memorizing syntax.

Jun 16, 2026
TABLESTable → CSVGUIDEMD TABLE| a | b |CSVa,b
Tool Guides2 min read

How to convert a Markdown table to CSV

Export a Markdown table to CSV so you can open it in a spreadsheet — the natural round trip when you edited data as a table and now need to crunch it.

Jun 16, 2026
EXPORTMD → RTFGUIDEMARKDOWN**bold**RTF{\b bold}Opens in any word processor
Tool Guides2 min read

How to convert Markdown to RTF

Export Markdown as Rich Text Format so it opens with formatting intact in almost any word processor or email client — and know when RTF is the right pick.

Jun 16, 2026
IMPORTRTF → MDGUIDERTF{\b bold}MARKDOWN**bold**Strips control codes
Tool Guides2 min read

How to convert RTF to Markdown

Pull a Rich Text Format document into clean Markdown — what converts, what RTF control codes get stripped, and why it beats copy-pasting formatted text.

Jun 16, 2026
IMPORTEPUB → MDGUIDEEPUBbook.epubMARKDOWN# Chapter 1Your own / DRM-free files
Tool Guides3 min read

How to convert EPUB to Markdown

Extract the text and chapter structure from an EPUB into editable Markdown — what comes through, the DRM limit to know about, and how to clean chapters up.

Jun 15, 2026
TABLESHTML → TableGUIDEHTML TABLE<table>…</table>MD TABLE| A | B |
Tool Guides2 min read

How to convert an HTML table to Markdown

Pull a table off a web page and into a clean Markdown table — keeping the rows and columns while dropping the markup, styling, and nested tags.

Jun 15, 2026
TABLESAlign TableGUIDERAGGED| a |b| |-|--|ALIGNED| a | b | | - | - |Padded columns
Tool Guides2 min read

How to format and align a Markdown table

Straighten a ragged Markdown table so its columns line up in the raw source — easier to read, easier to edit, and still valid everywhere.

Jun 15, 2026
EBOOKMD → EPUBGUIDEMARKDOWN# Chapter 1EPUBbook.epubReflows on any e-reader
Tool Guides3 min read

How to convert Markdown to EPUB

Package Markdown into an EPUB ebook that opens on any e-reader — how chapters come from headings, what metadata to set, and where EPUB beats PDF for reading.

Jun 15, 2026
TABLESExcel → TableGUIDESPREADSHEETPaste cellsMD TABLE| A | B |Tab-separated paste
Tool Guides2 min read

How to convert Excel to a Markdown table

Copy cells straight from Excel or Google Sheets and paste them as a Markdown table — no CSV export, no retyping, just select, copy, paste.

Jun 14, 2026
TABLESJSON → TableGUIDEJSON ARRAY[{ "a": 1 }]MD TABLE| a | | 1 |
Tool Guides2 min read

How to convert JSON to a Markdown table

Turn a JSON array of records into a clean Markdown table — perfect for documenting API responses, config lists, or any data shaped as repeated objects.

Jun 14, 2026
PRESENTMD → reveal.jsGUIDEMARKDOWN# Talk --- ## PointHTML SLIDESreveal.js deckTransitions · speaker notes
Tool Guides3 min read

How to make a reveal.js deck from Markdown

Generate a web-native reveal.js presentation from Markdown — how slide breaks map, what reveal.js adds over plain slides, and how to present and share it.

Jun 14, 2026
TABLESCSV → TableGUIDECSVa,b 1,2MD TABLE| a | b | | 1 | 2 |
Tool Guides2 min read

How to convert CSV to a Markdown table

Turn a CSV export — or anything from a spreadsheet — into a clean Markdown table, with the header row and quoted commas handled for you.

Jun 13, 2026
PRESENTMD → SlidesGUIDEMARKDOWN# Slide 1 --- # Slide 2DECKSlide 1 · Slide 2--- starts a new slide
Tool Guides3 min read

How to turn Markdown into a slide deck

Write a presentation as plain text and let slide breaks do the layout — the conventions that turn Markdown into slides, and why it beats fighting with a slide editor.

Jun 13, 2026
IMPORTWord → MDGUIDEWORDdocument.docxMARKDOWN# TitleDiffable & version-controllable
Tool Guides3 min read

How to convert Word (DOCX) to Markdown

Get a Word document into clean, version-controllable Markdown — what survives the trip, what Word features have no Markdown equivalent, and how to tidy the result.

Jun 12, 2026
TABLESMake a TableGUIDEYOUR DATAName, Role Ada, EngMD TABLE| Name | Role |Aligned & valid
Tool Guides3 min read

How to make a Markdown table

Build a clean Markdown table without counting pipes by hand — paste your data, set the alignment, and copy a perfectly formatted table.

Jun 12, 2026
EXPORTMD → WordGUIDEMARKDOWN# Title ## SectionWORD STYLESHeading 1 Heading 2Real .docx with built-in styles
Tool Guides3 min read

How to convert Markdown to Word (DOCX)

Hand a Markdown draft to someone who lives in Microsoft Word — what maps to Word styles, what to check after opening, and when DOCX beats PDF.

Jun 12, 2026
CONVERTHTML → MDGUIDEHTML<h1>Hi</h1>MARKDOWN# HiStrips styles, classes & scripts
Tool Guides3 min read

How to convert HTML to Markdown

Strip the styling, classes, and clutter out of HTML and get clean, portable Markdown back — ideal for rescuing web content into notes, docs, or a CMS migration.

Jun 11, 2026
CONVERTMD → HTMLGUIDEMARKDOWN# Hi **bold**SEMANTIC HTML<h1>Hi</h1> <strong>bold</strong>
Tool Guides3 min read

How to convert Markdown to HTML

Turn Markdown into clean, semantic HTML you can paste into a CMS, an email, or a web page — and understand what the output looks like and why it stays safe.

Jun 11, 2026
EXPORTMD → PDFGUIDEMARKDOWN# ReportPDFReport.pdfPrint-ready, selectable text
Tool Guides3 min read

How to convert Markdown to PDF

Turn a Markdown document into a clean, shareable PDF entirely in your browser — what carries over, how page breaks work, and how to check pagination before you send.

Jun 10, 2026
IMPORTPDF → MDGUIDEPDF TEXTReport.pdfMARKDOWN# ReportText-based PDFs only — not scans
Tool Guides3 min read

How to convert PDF to Markdown

Pull the text out of a PDF and into clean, editable Markdown — what extracts well, why scanned PDFs need OCR first, and how to clean up the result fast.

Jun 10, 2026
DATE MATHAgeGUIDEBORN1996-04-12TODAY2026-06-05EXACT AGE30y 1m 24d
Tool Guides3 min read

How to calculate exact age from a date of birth

Calendar-accurate age math is harder than "today minus birthday." Here is what the calculator does and how to use it for "age on a given date" questions.

May 26, 2026
CONVERTNumber BasesGUIDEDEC42BIN101010HEX2AOCT52One number, four bases
Tool Guides4 min read

How to convert between binary, octal, decimal, and hex

The four bases every programmer should be able to translate by feel — and when to reach for a tool instead of doing it in your head.

May 26, 2026
ENCODINGBase64GUIDEPLAIN TEXTHelloBASE64SGVsbG8=A–Za–z0–9+ /Reversible encoding — not encryption
Tool Guides4 min read

Base64 explained, and when you actually need it

Base64 is not encryption. It is not compression. Here is what it actually is and the five real-world use cases that justify it.

May 26, 2026
BODY METRICBMIGUIDEHeight 175 cmWeight 70 kgBMI22.9UnderHealthyOverA general guide, not a diagnosis
Tool Guides4 min read

How to read a BMI number honestly

BMI is one number among many. Here is what it does and does not tell you, and how to read the result without dramatizing it.

May 26, 2026
TRANSFORMText CaseGUIDElowerhello worldUPPERHELLO WORLDTitleHello Worldkebabhello-world
Tool Guides3 min read

How to change text case without retyping it

UPPERCASE, lowercase, Title Case, Sentence case — what each one actually means, and the gotchas when your text has names, acronyms, or non-Latin scripts.

May 26, 2026
OPTIMIZEMinify CSSGUIDE</>.btn { color: #b45309; padding: 8px;8.6 KB2.3 KB−73%Smaller files load faster
Tool Guides4 min read

How to minify CSS (and what gets stripped)

The honest pitch for a CSS minifier — what it actually does, what the byte savings really look like, and when you should not bother.

May 26, 2026
COMPAREDiffGUIDE const a = 1-let b = 2+const b = 3 return a + b
Tool Guides4 min read

How to compare two texts line by line

A 90-second walkthrough of the diff checker — when to reach for it, how the algorithm works, and three gotchas that ruin diffs in practice.

May 26, 2026
ICON SIZESFaviconsGUIDESOURCE1632180512One source → every size
Tool Guides5 min read

How to make a complete favicon set in 2026

The minimum favicon set every site needs, the sizes that still matter, and the HTML snippet that makes them all work — without any external service.

May 26, 2026
INTEGRITYHashingGUIDEINPUTpassword123SHA-256ef92b778ba…1f0aOne-wayFixed length64 hexSame input always hashes the same
Tool Guides4 min read

How to use MD5, SHA-1, and SHA-256 without getting fooled

What hashes are for, why MD5 and SHA-1 are still useful (just not for security), and the three cases where SHA-256 is the right answer.

May 26, 2026
OPTIMIZEMinify HTMLGUIDE</>.btn { color: #b45309; padding: 8px;4.2 KB1.1 KB−74%Strip whitespace, comments, line breaks
Tool Guides4 min read

How to minify HTML safely

The trick to minifying HTML without breaking pages: knowing which tags collapse whitespace and which preserve it. Here's how it works.

May 26, 2026
IMAGESCompressGUIDE1920 × 1080FILE SIZE2.4 MB380 KB−84%Same dimensions, far fewer bytes
Tool Guides4 min read

How to compress images without ruining them

JPEG, PNG, WebP — which to use, what quality to pick, and how to halve a file size without anyone noticing.

May 26, 2026
PRETTY-PRINTFormat JSONGUIDE{"a":1,"b":[2,3]}{ "a": 1, "b": [2, 3]}
Tool Guides4 min read

How to beautify and validate JSON

A JSON formatter is the cheapest debugging tool you own. Here is what it should — and should not — try to do for you.

May 26, 2026
TOKENSJWTGUIDEeyJhbG….eyJzdWIi….SflKxw…Headeralg · typPayloadsub · expSignatureHMACSigned, not encrypted — never trust unverified
Tool Guides5 min read

How to inspect a JWT without compromising it

A JWT is three Base64 strings joined by dots. Here is what each part means, what the decoder shows, and why the signature stays secret.

May 26, 2026
FINANCEMortgageGUIDEMONTHLY PAYMENT$1,432 / moPrincipal$320,000Rate6.5%Term30 yrWHERE IT GOESPrincipal 38%Interest 62%
Tool Guides5 min read

How to calculate a monthly mortgage payment

The amortization formula in plain English, what your bank does that this calculator does not, and the single most useful question to ask before signing.

May 26, 2026
SECURITYPasswordsGUIDET9$mK2!pXq4wSTRENGTH16 chars≈ 92 bitsA–z 0–9 #$Length beats complexity
Tool Guides5 min read

How to generate a password you can actually trust

The math behind password strength, why "random words" passwords are mostly good enough, and how to use a generator without thinking about it.

May 26, 2026
EVERYDAY MATHPercentagesGUIDE15% × 240=3615%part ÷ whole × 100 = percent
Tool Guides3 min read

How to calculate percentages without re-learning them every time

Three formulas cover 99% of percentage questions. Here is how each one works and which to use when.

May 26, 2026
ENCODE & SCANQR CodesGUIDEPAYLOADhttps://toulino.appHolds URLs, text, Wi-Fi, contactsscan to open
Tool Guides4 min read

How to make a QR code that actually scans

The four QR knobs that matter, when to add a logo, and how to pick a size so people can scan from across the room.

May 26, 2026
PATTERNSRegexGUIDEPATTERN[a-z]+abc 123 xyz2 matches
Tool Guides4 min read

How to test a regex without copy-pasting into your editor

A regex tester is a debugger for patterns. Here is a workflow that produces a regex you can trust on the first paste.

May 26, 2026
CLEAN URLSSlugsGUIDETITLEHello World! PostURL SLUGhello-world-postLowercase · dashes · no symbols
Tool Guides3 min read

How to make a URL slug that survives the internet

A good slug is readable, short, and forever-stable. Here are the rules — and the gotchas with non-Latin scripts and emojis.

May 26, 2026
READABLE QUERIESFormat SQLGUIDEselect id,name from users where age>21SELECT id, nameFROM usersWHERE age > 21
Tool Guides5 min read

How to format SQL queries that anyone can read

A formatter does not just prettify SQL — it makes structure visible. Here is how the indentation works and which style guides agree.

May 26, 2026
EPOCH ↔ ISOTimestampsGUIDEUNIX EPOCH1717545600ISO 86012024-06-05Seconds since Jan 1, 1970 UTC
Tool Guides3 min read

How to read Unix timestamps without doing math

Epoch seconds, milliseconds, ISO 8601 — the four formats every developer should be able to convert between, and what each one means.

May 26, 2026
PERCENT-ENCODINGURL EncodeGUIDERAWa b&cENCODEDa%20b%26cspace → %20& → %26? → %3F
Tool Guides3 min read

When and why to URL-encode a string

Percent-encoding is straightforward in theory and quietly tricky in practice. Here is what the encoder does and the three real-world traps.

May 26, 2026
UNIQUE IDSUUIDGUIDEf47ac10b-58cc-4372-a567-0e02b2c3d479v4 · Randomv7 · Time-sortable128-bit · 36 characters · collision-safe
Tool Guides4 min read

How UUIDs work, and when to use which version

UUID v4 vs v7 vs ULID — when to use each, and why "random globally-unique ID" is more subtle than it looks.

May 26, 2026
TEXT METRICSWord CountGUIDE1,240words6,800characters7 minread timeparagraph lengths
Tool Guides3 min read

How to count words, characters, and reading time

When word counts matter, what counts as a "word," and a small trick for hitting tweet-length and tagline budgets exactly.

May 26, 2026