ToolHub guide

How to use every ToolHub tool

This page explains what each tool does, when you should use it, and the exact steps to get a useful result. It is designed as a helpful content hub for visitors and search engines.

How to Compress Images Online

Learn how to reduce image file size for faster websites, better SEO, and easier sharing.

How to Format JSON Online

Use a JSON formatter to validate, pretty-print, minify, and inspect API data.

Best Free SEO Title Length Checker

Check whether a meta title is clear, concise, and within a practical search-result length.

PDF to Word: What to Know Before Converting

Understand when PDF to Word conversion works well and how to prepare readable PDFs.

Free Password Generator Best Practices

Create stronger passwords with enough length, mixed characters, and safe storage habits.

AudioBusinessDataDesignDeveloperFinanceHealthLegalMarketingMathMediaPDFSEOSecurityTextTimeUtilityWebWriting

Audio Tools

TTS

Text to Speech Script

Clean text into readable narration blocks before using a text-to-speech service.

How to use

  1. Paste script.
  2. Clean spacing.
  3. Review narration blocks.
  4. Use in your voice tool.

What you need

Start with this input: Paste a video intro script.

  • Script cleanup
  • Narration prep
  • Content workflow
Open Text to Speech Script

Business Tools

INV

Invoice Number Generator

Generate readable invoice numbers with date and random suffixes.

How to use

  1. Open the tool.
  2. Generate an invoice number.
  3. Copy the ID.
  4. Use it in your invoice.

What you need

Start with this input: INV-20260630-4821

  • Business IDs
  • Date-based format
  • Quick generation
Open Invoice Number Generator
MAIL

Email Template Generator

Generate a clean email starter for support, sales, or contact replies.

How to use

  1. Enter context.
  2. Generate draft.
  3. Edit the tone.
  4. Send from your email app.

What you need

Start with this input: Draft a support reply.

  • Business writing
  • Fast draft
  • Editable output
Open Email Template Generator

Data Tools

CSV

CSV to JSON

Turn comma-separated rows into JSON objects for tests and quick imports.

How to use

  1. Paste CSV with headers.
  2. Convert to JSON.
  3. Review objects.
  4. Copy output.

What you need

Start with this input: name,age Asha,29

  • Header-based conversion
  • JSON output
  • Data helper
Open CSV to JSON
J2C

JSON to CSV

Transform simple arrays of objects into comma-separated text for spreadsheets.

How to use

  1. Paste JSON array.
  2. Convert to CSV.
  3. Review rows.
  4. Copy result.

What you need

Start with this input: [{"name":"Asha","age":29}]

  • Object array support
  • CSV output
  • Spreadsheet helper
Open JSON to CSV

Design Tools

HEX

Color Converter

Translate common HEX color values into RGB for CSS, design tools, and documentation.

How to use

  1. Enter a HEX color.
  2. Convert it.
  3. Review RGB output.
  4. Copy CSS value.

What you need

Start with this input: #6366f1

  • HEX to RGB
  • CSS friendly
  • Design utility
Open Color Converter
PAL

Color Palette Generator

Create lighter and darker companion shades for interface experiments.

How to use

  1. Enter a base color.
  2. Generate palette.
  3. Review shades.
  4. Copy colors into your design.

What you need

Start with this input: #10b981

  • Base color workflow
  • Shade suggestions
  • Visual planning
Open Color Palette Generator
16:9

Aspect Ratio Calculator

Resize images, videos, and design frames while keeping the same ratio.

How to use

  1. Enter width.
  2. Enter height or ratio.
  3. Calculate dimensions.
  4. Use in your design.

What you need

Start with this input: 1920 width at 16:9.

  • Responsive media
  • Design math
  • Ratio helper
Open Aspect Ratio Calculator

Developer Tools

{ }

JSON Formatter

Clean messy JSON, validate API responses, and prepare structured data for development work.

How to use

  1. Paste JSON into the editor.
  2. Choose format, minify, or validate.
  3. Review any errors.
  4. Copy or download the result.

What you need

Start with this input: {"name":"ToolHub","tools":40}

  • Validation feedback
  • Minify and pretty-print modes
  • Useful for API debugging
Open JSON Formatter
ID

UUID Generator

Create unique identifiers for database records, test data, and development workflows.

How to use

  1. Open the tool.
  2. Click generate.
  3. Copy the UUID.
  4. Use it in your project.

What you need

Start with this input: Generate a new v4-style UUID.

  • Unique IDs
  • Developer friendly
  • Fast copy workflow
Open UUID Generator
64E

Base64 Encoder

Convert plain text into Base64 for development, testing, and data URI workflows.

How to use

  1. Enter text.
  2. Run encode.
  3. Review output.
  4. Copy Base64 text.

What you need

Start with this input: Encode ToolHub.

  • Text encoding
  • Instant output
  • Developer utility
Open Base64 Encoder
64D

Base64 Decoder

Inspect Base64 strings safely in your browser and convert them back to text.

How to use

  1. Paste Base64.
  2. Run decode.
  3. Review readable output.
  4. Copy the text.

What you need

Start with this input: VG9vbEh1Yg==

  • Text decoding
  • Validation feedback
  • Fast inspection
Open Base64 Decoder
ESC

HTML Escape

Convert angle brackets, ampersands, and quotes into HTML entities.

How to use

  1. Paste HTML text.
  2. Escape entities.
  3. Review safe output.
  4. Copy the result.

What you need

Start with this input: <div>ToolHub</div>

  • Entity conversion
  • Safer snippets
  • Frontend helper
Open HTML Escape
HTML

HTML Unescape

Decode common HTML entities into readable characters.

How to use

  1. Paste escaped HTML.
  2. Decode entities.
  3. Review output.
  4. Copy text.

What you need

Start with this input: &lt;div&gt;ToolHub&lt;/div&gt;

  • Entity decoding
  • Readable snippets
  • Content cleanup
Open HTML Unescape

Finance Tools

LOAN

Loan Calculator

Calculate a simple monthly payment estimate from amount, interest, and term.

How to use

  1. Enter loan amount.
  2. Add interest rate.
  3. Add years.
  4. Calculate monthly payment.

What you need

Start with this input: 100000 at 9% for 5 years

  • Payment estimate
  • Finance planning
  • Simple formula
Open Loan Calculator
TIP

Tip Calculator

Work out tip amount, total bill, and per-person split.

How to use

  1. Enter bill amount.
  2. Choose tip percent.
  3. Add people count.
  4. Review split total.

What you need

Start with this input: 1000 bill with 10% tip split by 2.

  • Tip total
  • Split amount
  • Restaurant helper
Open Tip Calculator
USD

Currency Format Helper

Turn raw numbers into clean currency-style values for copy and reports.

How to use

  1. Enter a number.
  2. Format the amount.
  3. Review separators.
  4. Copy the result.

What you need

Start with this input: 123456.7

  • Readable numbers
  • Report helper
  • Fast formatting
Open Currency Format Helper

Health Tools

BMI

BMI Calculator

Calculate BMI from height and weight for a simple health reference.

How to use

  1. Enter your weight.
  2. Enter your height.
  3. Calculate BMI.
  4. Read the basic category.

What you need

Start with this input: 70 kg and 175 cm

  • BMI formula
  • Simple category
  • Health reference
Open BMI Calculator

Marketing Tools

UTM

UTM Builder

Create marketing URLs with source, medium, campaign, and content parameters.

How to use

  1. Enter destination URL.
  2. Add campaign fields.
  3. Generate URL.
  4. Test the final link.

What you need

Start with this input: example.com with source newsletter.

  • Campaign tracking
  • URL parameter builder
  • Marketing helper
Open UTM Builder

Math Tools

%

Percentage Calculator

Find percentages, discounts, markups, and proportional values for daily work.

How to use

  1. Enter the base number.
  2. Enter the percentage.
  3. Calculate result.
  4. Copy the value.

What you need

Start with this input: 18% of 250

  • Percent of number
  • Discount helper
  • Quick math
Open Percentage Calculator

Media Tools

IMG

Image Compressor

Reduce image file size while keeping visual quality suitable for websites, blogs, and social sharing.

How to use

  1. Upload one or more images.
  2. Choose the target quality or size.
  3. Preview the result.
  4. Download the optimized files.

What you need

Start with this input: Upload product-photo.png and compress it before publishing.

  • Browser-friendly workflow
  • Great for SEO page speed
  • Supports common image formats
Open Image Compressor
QR

QR Code Generator

Enter a URL or text payload and prepare QR-ready content for campaigns and labels.

How to use

  1. Paste a link.
  2. Review the encoded payload.
  3. Use the text in a QR workflow.
  4. Test before publishing.

What you need

Start with this input: https://example.com

  • URL cleanup
  • Campaign friendly
  • Simple payload preview
Open QR Code Generator

PDF Tools

PDF

PDF to Word

Extract text from PDF files and package it into a Word document for editing and reuse.

How to use

  1. Upload a PDF file.
  2. Start conversion.
  3. Wait for extraction.
  4. Download the DOCX file.

What you need

Start with this input: Upload a PDF report and download converted.docx.

  • DOCX output
  • Useful for text-heavy PDFs
  • Simple upload workflow
Open PDF to Word

SEO Tools

URL

Slug Generator

Turn blog titles and page names into lowercase, hyphenated, SEO-friendly slugs.

How to use

  1. Paste a title.
  2. Generate slug.
  3. Review punctuation cleanup.
  4. Use it in your URL.

What you need

Start with this input: Best Free PDF Tools becomes best-free-pdf-tools.

  • SEO-friendly output
  • Removes symbols
  • Lowercase hyphen format
Open Slug Generator
SEO

Meta Title Checker

Estimate whether your SEO title is short, clear, and search-result friendly.

How to use

  1. Enter a title.
  2. Check length.
  3. Adjust wording.
  4. Copy your final title.

What you need

Start with this input: ToolHub - Free Online Tools

  • Length guidance
  • Character count
  • SEO writing helper
Open Meta Title Checker
META

Meta Description Checker

Draft concise descriptions that fit common search preview lengths.

How to use

  1. Paste description.
  2. Check character count.
  3. Trim or expand.
  4. Copy final copy.

What you need

Start with this input: Free tools for images, PDFs, JSON, SEO, and daily tasks.

  • Character count
  • Snippet helper
  • Content quality reminder
Open Meta Description Checker
KEY

Keyword Density Checker

Analyze how often words appear in page copy for simple SEO review.

How to use

  1. Paste page text.
  2. Run analysis.
  3. Review frequent terms.
  4. Refine your content.

What you need

Start with this input: Paste a blog post and inspect top terms.

  • Top words
  • Density estimate
  • Content review
Open Keyword Density Checker
BOT

Robots.txt Generator

Generate simple crawl rules for search engine bots and sitemap discovery.

How to use

  1. Enter domain.
  2. Choose crawl rule.
  3. Generate robots.txt.
  4. Upload to your site root.

What you need

Start with this input: Allow all with sitemap URL.

  • SEO crawl helper
  • Sitemap line
  • Simple rules
Open Robots.txt Generator
MAP

Sitemap URL Helper

Format page URLs for sitemap planning and search engine submission workflows.

How to use

  1. Paste URLs.
  2. Clean list.
  3. Review sitemap-ready lines.
  4. Add to your sitemap.

What you need

Start with this input: https://example.com/tools/json-formatter

  • URL cleanup
  • SEO planning
  • Line-based output
Open Sitemap URL Helper

Security Tools

PWD

Password Generator

Create secure passwords for accounts, apps, hosting panels, and admin tools.

How to use

  1. Choose password length.
  2. Generate password.
  3. Copy it securely.
  4. Store it in a password manager.

What you need

Start with this input: Generate a 16 character password.

  • Random output
  • Configurable length
  • Security-focused
Open Password Generator

Text Tools

ABC

Word Counter

Analyze text length for articles, ads, meta descriptions, and assignments.

How to use

  1. Paste your text.
  2. Review live counts.
  3. Adjust your content.
  4. Copy the final text.

What you need

Start with this input: Paste an article draft to count words.

  • Word count
  • Character count
  • Reading estimate
Open Word Counter
Aa

Case Converter

Quickly rewrite text casing for headings, filenames, URLs, and code labels.

How to use

  1. Paste text.
  2. Pick a case action.
  3. Check the output.
  4. Copy the converted text.

What you need

Start with this input: Convert 'free online tools' to title case.

  • Uppercase
  • Lowercase
  • Title case
Open Case Converter
REV

Text Reverser

Flip text for testing, formatting, puzzle creation, or simple text experiments.

How to use

  1. Enter text.
  2. Choose reverse action.
  3. Preview the result.
  4. Copy the output.

What you need

Start with this input: Reverse ToolHub into buHlooT.

  • Reverse characters
  • Reverse lines
  • Instant preview
Open Text Reverser
A-Z

List Sorter

Organize names, keywords, URLs, and simple lists in ascending order.

How to use

  1. Paste list items.
  2. Sort the list.
  3. Remove blanks if needed.
  4. Copy output.

What you need

Start with this input: Paste one item per line.

  • Alphabetical sort
  • Line-based workflow
  • Clean output
Open List Sorter
UNIQ

Duplicate Line Remover

Clean keyword lists, URLs, IDs, and other line-based text collections.

How to use

  1. Paste a list.
  2. Remove duplicates.
  3. Review unique lines.
  4. Copy cleaned list.

What you need

Start with this input: Paste repeated URLs.

  • Duplicate removal
  • Preserves first match
  • List cleanup
Open Duplicate Line Remover

Time Tools

TIME

Timestamp Converter

Inspect timestamps from APIs, logs, databases, and analytics events.

How to use

  1. Paste a timestamp.
  2. Convert it.
  3. Review local date.
  4. Use it in debugging.

What you need

Start with this input: 1719792000

  • Unix timestamp support
  • Local date output
  • Developer debugging
Open Timestamp Converter
AGE

Age Calculator

Find years elapsed between a date and today for forms or quick checks.

How to use

  1. Enter a date.
  2. Calculate age.
  3. Review years elapsed.
  4. Use the result.

What you need

Start with this input: 1995-01-01

  • Date difference
  • Year estimate
  • Simple input
Open Age Calculator
DATE

Date Difference Calculator

Calculate elapsed days for schedules, events, deadlines, and planning.

How to use

  1. Enter start date.
  2. Enter end date.
  3. Calculate difference.
  4. Review day count.

What you need

Start with this input: 2026-01-01 to 2026-06-30

  • Day difference
  • Schedule planning
  • Deadline helper
Open Date Difference Calculator

Utility Tools

UNIT

Unit Converter

Convert meters, kilometers, miles, feet, and inches for everyday calculations.

How to use

  1. Enter a number.
  2. Choose the unit context.
  3. Review converted values.
  4. Use the result.

What you need

Start with this input: 10 meters

  • Length conversions
  • Instant math
  • Everyday utility
Open Unit Converter
RNG

Random Number Generator

Pick random values for tests, games, samples, and decisions.

How to use

  1. Enter minimum.
  2. Enter maximum.
  3. Generate number.
  4. Use the result.

What you need

Start with this input: Random number from 1 to 100.

  • Range control
  • Instant random output
  • Testing helper
Open Random Number Generator
SIZE

File Size Converter

Translate file sizes for upload limits, hosting plans, and compression checks.

How to use

  1. Enter file size.
  2. Choose base unit.
  3. Convert values.
  4. Use the readable result.

What you need

Start with this input: 1048576 bytes

  • Bytes to MB
  • Upload planning
  • Storage helper
Open File Size Converter

Web Tools

%20

URL Encoder

Convert spaces and special characters into URL-safe encoded text.

How to use

  1. Enter text.
  2. Encode it.
  3. Review URL-safe output.
  4. Copy into your link.

What you need

Start with this input: free online tools

  • URL-safe output
  • Handles symbols
  • Web developer helper
Open URL Encoder
URL

URL Decoder

Turn encoded query strings and URL fragments back into readable text.

How to use

  1. Paste encoded text.
  2. Decode it.
  3. Review readable output.
  4. Copy the result.

What you need

Start with this input: free%20online%20tools

  • Query debugging
  • Readable output
  • Fast conversion
Open URL Decoder
DNS

DNS Record Notes

Prepare readable DNS setup notes for domains, hosting, and verification tasks.

How to use

  1. Enter record details.
  2. Generate notes.
  3. Review values.
  4. Share with your domain manager.

What you need

Start with this input: TXT google-site-verification=...

  • DNS handoff
  • Verification notes
  • Clean formatting
Open DNS Record Notes

Writing Tools

MD

Markdown Preview

Inspect headings, lists, and emphasis markers while drafting documentation.

How to use

  1. Paste Markdown.
  2. Preview cleaned text.
  3. Check structure.
  4. Copy final draft.

What you need

Start with this input: # ToolHub - Fast tools

  • Writing helper
  • Documentation workflow
  • Simple preview
Open Markdown Preview
READ

Read Time Calculator

Calculate approximate reading time for articles, blogs, and landing pages.

How to use

  1. Paste content.
  2. Calculate word count.
  3. Review read time.
  4. Adjust length if needed.

What you need

Start with this input: Paste your blog post.

  • Reading estimate
  • Word count
  • Content planning
Open Read Time Calculator