Developer Tools
41 toolsFormat, validate, optimize, inspect, and generate assets for development and SEO work.
View AllBrowser utilities
Fast tools that run locally
ToolPool.dev keeps the heavy work inside the browser so AI prompt, image, text, and developer utilities stay fast, private, and inexpensive to scale.
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Calculators
24 toolsQuick calculators for finance, percentages, dates, investments, and health.
View AllText Tools
11 toolsCount, compare, clean, transform, and generate text in your browser.
View AllImage Tools
11 toolsCompress, crop, resize, and convert images locally in your browser.
View AllSecurity Tools
5 toolsGenerate and assess passwords with private browser-based utilities.
View AllDesign Tools
4 toolsPick, convert, and check colors for visual design and accessibility.
View AllAI Tools
30 toolsPrepare prompts, templates, and AI workflow briefs locally in your browser.
View AllPDF Tools
20 toolsEdit, inspect, and create PDFs locally without uploading your files.
View AllDocument & Office Tools
10 toolsConvert, generate, reorder, watermark, and analyze documents locally in your browser.
View AllComplete directory
All browser tools
Images
Image Compressor & Resizer
Compress and resize JPG, PNG, and WebP images locally in your browser with private, client-side processing.
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Responsive Image Cropper
Crop images locally with common aspect ratios including square, widescreen, classic 4:3, and freeform exports.
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Client-Side Image Converter
Convert images between PNG, JPEG, and WebP locally in your browser using private Canvas-based processing.
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Online Image Resizer
Resize JPG, PNG, and WebP images by dimensions or percentage locally in your browser with private previews and downloads.
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WebP Image Converter
Convert JPG and PNG images to WebP or turn supported WebP images into PNG and JPG locally with quality and size previews.
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Image Metadata Viewer
View image filename, type, file size, dimensions, aspect ratio, modification date, and preview locally in your browser.
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Image to Base64 Converter
Encode a local image as a complete data URL or raw Base64 and preview the source without uploading it.
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Base64 to Image Converter
Decode an image data URL or raw Base64 string, preview dimensions, choose MIME type, and download the image.
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SVG Optimizer
Remove SVG comments, scripts, metadata, editor namespaces, and redundant whitespace locally.
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SVG Previewer
Paste SVG markup, render it safely as an image source, inspect sizing hints, and download the file.
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Favicon Generator
Create six favicon and app-icon PNG sizes from a local image and copy matching HTML link tags.
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Developer
Private JSON Formatter & Validator
Format, minify, validate, copy, and clean large JSON payloads entirely inside your browser.
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JSON Validator
Validate JSON syntax locally, find parse errors, and format valid JSON without uploading payloads.
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JWT Decoder
Decode JWT headers and payloads safely in your browser. Inspect JSON Web Tokens without sending token data to any server.
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Regex Tester
Test JavaScript regular expressions locally with g, i, and m flags, match highlighting, counts, and friendly errors.
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SQL Formatter
Format SELECT, INSERT, UPDATE, and DELETE SQL locally with readable clause breaks and indentation.
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XML Formatter
Format, minify, and validate XML locally in your browser with readable output and helpful parse errors.
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YAML to JSON / JSON to YAML Converter
Convert YAML to pretty JSON and JSON to readable YAML locally with validation errors and copy-ready output.
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Base64 Encoder / Decoder
Encode text or files to Base64 Data URIs and decode Base64 strings locally with UTF-8 safety and image previews.
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UUID v4 Generator
Generate one or many UUID v4 identifiers instantly in your browser using secure client-side randomness.
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URL Encoder / Decoder
Encode and decode URLs, query strings, and percent-encoded text instantly. Fast browser-based URL encoder and decoder.
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QR Code Generator
Generate downloadable QR codes locally for links, text, emails, phone numbers, and contact details.
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QR Code Scanner
Scan QR codes from uploaded images or your camera locally in the browser with copyable decoded results.
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Timestamp Converter
Convert Unix timestamps to readable dates and readable dates back to timestamps in local time or UTC.
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Hash Generator
Generate MD5, SHA1, SHA256, and SHA512 hashes from text locally in your browser.
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Developer Tools
Markdown Previewer
Write Markdown and see a sanitized live HTML preview locally with support for headings, lists, tables, quotes, links, and code blocks.
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Random Data Generator
Generate fake names, emails, phone numbers, usernames, addresses, and UUIDs locally for mockups, demos, and test data.
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JSON Diff Checker
Validate and compare two JSON values locally to find added, removed, and changed fields with path-level results.
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HTML Formatter & Beautifier
Format, beautify, minify, copy, and inspect HTML character counts locally without uploading or executing code.
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Random Number Generator
Generate one or many random whole numbers within a custom range, with an optional unique-numbers mode.
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QR Code Decoder
Decode QR codes from local image files, preview the source, and copy the extracted text without uploading the image.
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Barcode Generator
Create Code 128 and EAN-13 barcodes locally, customize bar dimensions, and download SVG output.
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Barcode Reader
Read supported barcode formats from local images using the browser Barcode Detector API with no upload fallback.
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URL Parser
Parse URLs into protocol, origin, host, port, pathname, query parameters, hash, and username locally.
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Offline Domain WHOIS Helper
Normalize a domain and parse pasted WHOIS output into registrar, dates, nameservers, and status details without a live lookup.
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UUID Validator
Validate canonical UUID strings, normalize letter case and braces, and inspect version and variant.
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SEO Tools
SEO Meta Tag Generator
Generate SEO meta tags, Open Graph tags, Twitter cards, canonical URLs, and robots tags for any webpage. Fast, free, and browser-based.
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Robots.txt Generator
Create robots.txt files with user-agent rules, allow/disallow paths, crawl delay, and sitemap links. Free browser-based robots.txt generator.
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Open Graph & Twitter Tag Generator
Generate Open Graph and Twitter card tags for titles, descriptions, URLs, images, and site names locally in your browser.
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UTM Campaign URL Builder
Build campaign tracking URLs with source, medium, campaign, term, and content parameters locally in your browser.
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Schema Markup Generator
Generate JSON-LD for Article, FAQPage, LocalBusiness, Product, WebSite, and BreadcrumbList schema types locally.
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XML Sitemap Generator
Create a valid sitemap.xml file from manual URL entries with priority, change frequency, and last modified fields.
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HTML Minifier & Beautifier
Minify, beautify, copy, and download HTML locally with size and compression reporting.
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CSS Minifier & Beautifier
Minify, compress, and beautify CSS code online. Reduce CSS file size, clean formatting, and copy optimized output instantly.
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JavaScript Minifier & Beautifier
Minify, compress, beautify, copy, and download JavaScript locally without executing code or using eval.
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UTM Parameter Parser
Extract source, medium, campaign, term, and content UTM parameters from a URL and copy them as JSON locally.
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JSON-LD Schema Validator
Validate JSON-LD syntax, detect schema types, review required and recommended fields, and pretty-print markup locally.
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Hreflang Tag Generator
Generate alternate-language link tags with validated locale codes, absolute URLs, and an optional x-default URL.
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Canonical Tag Generator
Normalize an absolute URL, optionally remove query parameters and fragments, and generate a canonical link tag.
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XML Sitemap Validator
Validate pasted or uploaded sitemap XML syntax, root type, loc URLs, duplicates, and URL-count limits locally.
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Manual Redirect Chain Checker
Analyze a manually entered redirect chain for invalid URLs, status codes, loops, excessive hops, and final response status.
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Robots.txt Validator
Validate robots.txt groups, directives, rules, sitemap URLs, ordering, and unknown directives locally.
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Converters
CSV ⇄ JSON Matrix Converter
Convert CSV files to JSON arrays and flat JSON arrays back to CSV locally with delimiter controls and private browser-only processing.
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Unit Converter
Convert length, weight, temperature, area, volume, and speed units locally with instant browser-only calculations.
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JSON to CSV Converter
Convert an array of JSON objects into escaped CSV with unioned headers, copy output, and local download.
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CSV to XML Converter
Convert quoted CSV rows into escaped XML with customizable root and row element names.
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XML to JSON Converter
Convert XML elements, attributes, repeated nodes, text, and CDATA into formatted JSON locally.
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Design Tools
Color Picker & Converter
Pick colors, preview them, and convert between HEX, RGB, and HSL locally with quick copy buttons.
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Color Contrast Checker
Check foreground and background color contrast locally with WCAG AA and AAA pass/fail results for normal and large text.
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Color Palette Generator
Generate analogous, complementary, triadic, tetradic, or monochromatic palettes and copy colors or CSS variables.
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CSS Gradient Generator
Design linear and radial gradients with adjustable color stops, positions, angles, live preview, and copy-ready CSS.
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Security Tools
Secure Password Generator
Generate strong random passwords locally in your browser with length, character options, and a strength indicator.
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Password Strength Checker
Check password strength locally with length, uppercase, lowercase, number, symbol, and improvement suggestion checks.
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Password Hash Generator
Generate salted PBKDF2-SHA256 password hashes locally with configurable iterations and secure random salts.
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Password Hash Verifier
Verify a password against a ToolPool PBKDF2-SHA256 encoded hash entirely in the browser.
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JWT Generator
Generate HS256 JSON Web Tokens from payload JSON, a local HMAC secret, issued-at time, and optional expiration.
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Calculators
Percentage Calculator
Calculate percentages, percent-of values, and percentage increase or decrease instantly in your browser.
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Age Calculator
Calculate exact age in years, months, and days, plus total days lived and next birthday timing.
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GST Calculator
Calculate GST inclusive and exclusive amounts locally with instant tax, subtotal, and total breakdowns.
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EMI Calculator
Calculate monthly loan EMI, total interest, and total payment locally for home, auto, and personal loans.
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SIP Calculator
Estimate SIP invested amount, expected returns, and total value locally from monthly investment, annual return, and duration.
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Compound Interest Calculator
Calculate compound growth, total contributions, total interest, and a yearly balance breakdown with optional monthly additions.
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Discount Calculator
Calculate discount amount, savings, price after discount, optional tax, and final price instantly in your browser.
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BMI Calculator
Calculate body mass index from height and weight locally with category feedback and general health guidance.
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Loan Calculator
Estimate monthly loan payments, total interest, and total repayment locally from amount, rate, and duration.
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Profit Margin Calculator
Calculate revenue, profit, profit margin, and markup from cost price and selling price instantly in your browser.
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ROI Calculator
Calculate net profit, return on investment percentage, and optional annualized ROI locally from investment values.
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Manual Currency Converter
Convert USD, EUR, GBP, INR, AUD, and CAD using exchange rates you enter manually, with currency swapping and copy-ready results.
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Percentage Increase Calculator
Calculate percentage increase and the difference amount between an original value and a new value instantly.
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Percentage Decrease Calculator
Calculate percentage decrease and the difference amount between an original value and a new value instantly.
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Break Even Calculator
Calculate break-even units and revenue from fixed costs, variable cost per unit, and selling price per unit.
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Savings Goal Calculator
Estimate when current savings, monthly contributions, and optional interest can reach a target savings amount.
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Aspect Ratio Calculator
Simplify width and height into an aspect ratio and calculate matching resize dimensions in either direction.
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CAGR Calculator
Calculate compound annual growth rate, total growth, and growth multiple from beginning value, ending value, and years.
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Inflation Calculator
Estimate future cost, purchasing power, and cumulative price change using an amount, annual inflation rate, and time period.
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Tax Calculator
Estimate taxable income, tax before credits, final tax, effective rate, and after-tax income using your own assumptions.
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Mortgage Calculator
Estimate monthly mortgage payments, principal, total interest, and lifetime cost with optional property tax and insurance.
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Profit Percentage Calculator
Calculate profit or loss amount, percentage based on cost, and margin based on selling price.
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Text Tools
SEO Slug Generator
Convert titles, blog headings, product names, and phrases into clean SEO-friendly URL slugs locally in your browser.
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Lorem Ipsum Generator
Generate lorem ipsum words, sentences, and paragraphs locally for layouts, mockups, prototypes, and content placeholders.
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Case Converter & String Inspector
Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, and slug-case while tracking live string metrics.
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Word Counter & Reading Time Calculator
Count words, characters, sentences, paragraphs, and estimated reading time instantly in your browser.
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Text Compare
Compare two text blocks locally, highlight line differences, and count added, removed, and changed lines.
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Remove Duplicate Lines
Remove duplicate lines from pasted text locally with case-sensitive or case-insensitive matching.
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HTML Encoder / Decoder
Encode special characters to HTML entities and decode HTML entities back to readable text locally.
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Character Counter
Count characters, characters without spaces, words, sentences, paragraphs, and estimated reading time locally.
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Text Sorter
Sort one-item-per-line text A to Z or Z to A and remove duplicate items locally in your browser.
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Remove Empty Lines
Remove blank lines, optionally trim whitespace, preserve line order, and copy cleaned text locally.
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Find and Replace Text
Find and replace text with optional case-sensitive matching, a live replacement count, and copy-ready preview.
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Business Tools
Professional Invoice Generator
Create professional invoices online with line items, tax, totals, notes, and print-ready output. ToolPool's invoice generator runs in your browser.
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Professional Quote Generator
Create professional quotes and estimates online with items, pricing, tax, notes, and print-ready output. No account required.
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Printable Receipt Generator
Generate simple printable receipts online with customer details, payment method, items, tax, and total amount.
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Annual, Monthly & Hourly Salary Calculator
Convert salary between annual, monthly, weekly, daily, and hourly pay using adjustable work hours and weeks per year.
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Freelance Hourly Rate Calculator
Estimate your freelance hourly rate based on income goals, expenses, taxes, vacation days, and billable hours.
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PDF Tools
Private PDF Merger
Merge multiple PDF files in your preferred order entirely in your browser, with no uploads or server storage.
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Private PDF Splitter
Split a PDF by page range and download the selected pages as a new PDF without uploading the source file.
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Browser PDF Compressor
Attempt to reduce PDF size with private browser-side object repacking and compare original and output sizes.
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JPG to PDF Converter
Reorder JPG and JPEG images and convert them into a downloadable PDF entirely inside your browser.
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PNG to PDF Converter
Reorder PNG images and convert them into a downloadable PDF locally without sending images to a server.
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PDF Page Counter
Count PDF pages and view the filename and file size locally, then download a simple page-count report.
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PDF Metadata Viewer
View PDF title, author, subject, creator, producer, dates, page count, and size locally in your browser.
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Rotate PDF Pages
Rotate every PDF page or selected pages by 90, 180, or 270 degrees and download the updated PDF.
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Extract PDF Pages
Extract selected page numbers and ranges into a new downloadable PDF with fully local browser processing.
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Delete PDF Pages
Remove selected pages from a PDF and download the updated document without uploading the original file.
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Document & Office Tools
PDF to JPG Converter
Convert PDF pages to JPG images locally in your browser. Choose pages, preview output, and download images without uploading files.
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PDF to PNG Converter
Convert PDF pages to PNG images online with local browser processing. Select pages and download images without uploading your PDF.
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Text to PDF Generator
Convert plain text into a clean PDF document online. Choose page size, font size, margins, and download locally generated PDF files.
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HTML to PDF Generator
Convert simple HTML into PDF locally in your browser with safe preview, page size options, and download-ready output.
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Markdown to PDF Generator
Convert Markdown notes, documentation, and formatted text into PDF files online using browser-based processing.
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PDF Page Reorder Tool
Reorder PDF pages online by entering a custom page sequence. Process files locally in your browser and download the updated PDF.
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PDF Watermark Tool
Add text watermarks to PDF files online. Customize opacity, size, rotation, and placement with local browser processing.
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Protect PDF Tool
Prepare PDFs for protection with browser-based tools and clear guidance. Add notices or use supported password protection when available.
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Unlock PDF Helper
Check whether a PDF is locked and re-save accessible PDFs locally. This tool does not bypass passwords or remove protection without access.
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PDF Size Analyzer
Analyze PDF file size, page count, average size per page, and optimization suggestions locally in your browser.
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AI Tools
AI Prompt Generator
Create structured prompts from a goal, role, tone, audience, output format, and constraints without using any AI API.
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Prompt Improver
Paste a raw prompt and get a clearer deterministic rewrite, missing context suggestions, and a structured format.
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Prompt Template Library
Browse and search prompt templates for marketing, coding, education, SEO, business, writing, design, sales, and HR.
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Prompt Chain Builder
Build multi-step prompt chains for research, outlining, writing, reviewing, and improving a result.
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Prompt Variable Generator
Create reusable prompt templates with placeholders such as topic, audience, tone, language, length, and goal.
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Email Prompt Builder
Build email prompts for sales, support, marketing, cold email, follow-up, and thank you messages.
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Blog Prompt Builder
Generate structured prompts for blog titles, outlines, long articles, FAQs, and SEO optimization.
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Product Description Prompt Builder
Build ecommerce product description prompts for Amazon, Shopify, WooCommerce, and Etsy listings.
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Social Media Prompt Builder
Create prompts for Facebook, Instagram, X, LinkedIn, and Threads posts with platform-aware guidance.
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YouTube Prompt Builder
Generate prompts for YouTube scripts, descriptions, tags, thumbnail ideas, and hooks.
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Code Review Prompt Builder
Build code review prompts for PHP, Laravel, JavaScript, Python, Java, C#, Go, and Rust.
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Bug Fix Prompt Builder
Create debugging prompts with symptoms, expected behavior, reproduction steps, environment, and constraints.
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SQL Prompt Builder
Generate prompts for SQL creation, optimization, indexing, and performance review.
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Regex Prompt Builder
Create prompts for regex creation and debugging with examples, matches, non-matches, and flavor notes.
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API Prompt Builder
Generate prompts for REST APIs, GraphQL, documentation, and API testing workflows.
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Resume Prompt Builder
Build resume creation prompts with target role, experience, achievements, skills, and formatting rules.
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Cover Letter Prompt Builder
Create cover letter prompts with role, company, motivation, proof points, and tone guidance.
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LinkedIn Profile Prompt Builder
Generate LinkedIn prompts for headline, about section, experience, and skills updates.
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Interview Prompt Builder
Build prompts for HR, technical, and behavioral interview preparation.
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Job Description Prompt Builder
Create job description prompts with role scope, responsibilities, requirements, benefits, and hiring criteria.
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Business Name Prompt Builder
Build prompts for business name ideas with industry, audience, style, constraints, and screening criteria.
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Startup Idea Prompt Builder
Create startup idea prompts with problem, audience, market, solution, risks, and validation experiments.
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Marketing Strategy Prompt Builder
Build marketing strategy prompts with audience, positioning, channels, budget, timeline, and metrics.
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Sales Copy Prompt Builder
Create prompts for sales copy with audience pain, promise, proof, objections, offer, and call to action.
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Customer Persona Builder
Generate structured customer persona templates with goals, pains, triggers, objections, and messaging angles.
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Story Prompt Generator
Generate structured story prompts with genre, premise, conflict, characters, setting, and ending direction.
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Character Generator
Generate structured character profiles with motivation, conflict, backstory, voice, arc, and relationships.
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World Building Generator
Create structured world building prompts for fictional worlds, societies, rules, history, conflicts, and locations.
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Image Prompt Builder
Build structured image prompts for Midjourney, Stable Diffusion, Flux, and DALL-E without calling any image API.
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Video Prompt Builder
Create structured video prompts for Runway, Veo, Kling, Pika, and Luma with scene, motion, camera, and style details.
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