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Developer tools, calculators, converters, and formatters built for search and speed.

Browse keyword-rich utility pages for JSON formatting, text cleanup, CSV conversion, encoding, quick calculations, IP lookups, UUID generation, password generation, and developer workflows. Every tool is designed to load fast and work directly in the browser.

41 indexable tool pages10 categoriesSSG-ready for Cloudflare Pages

Browse tools by category

This directory groups online developer tools by use case so search engines and visitors can quickly reach the right utility page.

Lookup

Tools for looking up information about various entities.

IP Lookup

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Find geographical and network information for IPs.

IPLookupLocationNetwork

Encode & Decode

Tools for encoding, decoding, and cryptography.

Base64 Encoder/Decoder

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Encode and decode Base64 text or files with ease.

Base64EncodeDecodeConvert

URL Encoder/Decoder

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Encode and decode URLs with support for multiple standards.

URLEncodeDecodeConvert

HTML Encoder / Decoder

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Encode and decode HTML entities safely.

HTMLEncodeDecodeConvert

Hex Encoder / Decoder

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Convert text or files into hexadecimal and back.

HexEncodeDecodeConvert

Conversion

Tools for unit, format, and data conversion.

CSV to JSON Converter

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Convert CSV files into structured JSON with customizable field options.

CSVJSONConvertData

JSON to CSV Converter

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Convert JSON data into CSV for spreadsheets and reports.

CSVJSONConvertData

Timestamp Converter

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Convert Unix timestamps into readable dates and back.

TimestampConvertTime

Calculator

Perform common calculations and conversions, such as unit, currency, and time.

Hash Generator

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Generate MD5, SHA and other hash values for text or files.

HashMD5SHASecurity

Basic Calculator

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A simple calculator for everyday arithmetic operations.

CalcScientificExpression

Percentage Calculator

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Work out percentages, discounts, and markups with ease.

PercentDiscountMarkupReverse

Tip Splitter

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Split bills and tips between people with rounding options.

TipSplitBill

Date Difference

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Find the difference between two dates or add/subtract days.

DateDiffBusiness Days

Age Calculator

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Work out exact age and next birthday details.

AgeBirthdayCountdown

Compound Interest

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Calculate interest growth with compounding options.

InterestFVPVAnnuity

Loan Amortization

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Build repayment schedules for loans and mortgages.

LoanMortgageAmortization

APR / APY Converter

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Convert between annual percentage rate and yield.

APRAPYFinance

ROI & Break-even

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Analyze return on investment and break-even points.

ROIBreak EvenPayback

Subnet Calculator

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Work out network, broadcast, and usable IP ranges.

CIDRSubnetNetwork

Combinatorics Calculator

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Compute factorials, permutations, and combinations.

nCrnPrFactorial

Quick Stats

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Get quick statistics like mean, median, and variance.

MeanMedianStdQuantile

Geometry Area & Volume

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Calculate area and volume for shapes and solids.

AreaVolumeGeometry

Recipe Scaler

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Scale recipe ingredients by servings or portion size.

RecipeScaleKitchen

GPA Calculator

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Compute GPA from course credits and grades.

GPAGrade

BMI / BMR / TDEE

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Calculate body mass index, basal metabolic rate, and daily energy use.

BMIBMRTDEEHealth

Currency Converter

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Convert currencies using live exchange rates.

FXCurrencyRates

Generators

Tools for generating various data and content.

UUID Generator

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Generate random UUIDs for use in projects and databases.

UUIDGenerateID

Password Generator

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Generate secure, customizable passwords for any use.

PasswordGenerateSecurity

Lorem Generator

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Generate random Lorem Ipsum text for layouts.

LoremGenerateText

Random User Generator

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Generate random user profiles online with names, photos, emails, addresses, and phone numbers. Fully customizable for testing, mock data, or sample projects.

RandomUserGeneratePerson

Data Tools

Tools for data processing, conversion, and analysis.

CSV Lint

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Validate CSV files for errors and formatting issues.

CSVValidateDelimiterEncoding

CSV Cleaner

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Clean CSV files by trimming, fixing quotes and removing empty rows.

CSVCleanTrimNormalize

CSV Row Filter

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Filter CSV rows with custom conditions and export results.

FilterWhereQueryTable

CSV Group By

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Group CSV rows by columns and compute aggregates.

Group ByAggregateSumAverageCount

Dataset Profiler

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Profile CSV datasets with column stats and quality checks.

ProfileSummaryStatisticsQuality

Text Processing

Tools for text manipulation, formatting, and analysis.

Text Formatter

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Format and clean text with options for case conversion, spacing, and line breaks.

TextFormatEditor

Media

Tools for image, audio, video, and document processing: compression, conversion, and optimization.

Development

Utilities and helpers for developers.

JSON Formatter

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Format, validate and minify JSON with syntax highlighting and error checks.

JSONFormatCode

AES Encryptor/Decryptor

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Encrypt or decrypt text using the AES algorithm.

AESEncryptDecryptSecurity

Regex Tester

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Test and debug regular expressions with real-time matches.

RegexTestDev

HTML Formatter

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Format HTML code for easier reading and editing.

HTMLFormatDev

XML Formatter

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Format XML files with indentation and line breaks.

XMLFormatValidateDev

Other

Miscellaneous tools that do not fit into other categories.

High-intent long-tail searches this site targets

online JSON formatterCSV to JSON converter onlinefree password generatorBase64 encoder onlinesubnet calculator onlinetext formatter onlinefree online calculator toolsdeveloper utilities browser based

The homepage is written to support commercial and informational searches around online utilities, browser-based developer tools, free calculators, converters, formatters, encoders, and lookup workflows.

Instead of relying only on meta keywords, the site now repeats important long-tail phrases in visible headings, internal links, FAQ markup, manifest data, and indexable body copy so category pages and tool pages have stronger contextual support.

Why these pages perform well

Search engines can crawl a clean hierarchy of category pages, tool detail pages, and supporting copy without client-side blockers.

Useful keyword clusters

The directory targets terms like online calculator, JSON formatter, CSV converter, encoder, decoder, generator, and lookup tool.

Built for fast static delivery

Static generation and CDN delivery reduce latency, improve Core Web Vitals, and make long-tail pages easier to rank.

What you can do with these online developer tools

Use this site as a working directory for browser-based developer utilities. You can format JSON, convert CSV files, generate passwords and UUIDs, test regex patterns, encode and decode payloads, inspect IP addresses, and run quick math or finance calculations without leaving the page.

The strongest ranking opportunities usually come from highly specific utility searches such as JSON formatter, CSV to JSON converter, Base64 encoder, subnet calculator, or percentage calculator. The site structure is set up to support those long-tail entry pages.

FAQ

Are these tools free?

Yes. The site focuses on free online developer tools and utility pages.

Do I need to install anything?

No. Most tools run instantly in the browser and are designed for static delivery.

What are the most popular use cases?

Formatting code and text, converting data formats, generating values, and running quick business or math calculations.