NEOS TOOLS™
Tool Search
Find a fast, private tool for the job.
Time · Calculator · Business · QR · Barcode · Text · Marketing · Finance · Image
TOOLS
All tools
Timer
A precise themed countdown timer that runs in your browser.
Calculator
A keyboard-ready calculator with private history.
Percentage Calculator
Calculate percentages, ratios, and percentage change.
Margin Calculator
Calculate profit, margin, markup, and target price.
Scientific Calculator
Trigonometry, logs, powers, constants, and DEG/RAD modes.
QR Generator
Create private QR codes locally and download them as PNG.
Word Counter
Count words, characters, sentences, and reading time locally.
VAT Calculator
Add or remove VAT and see net, tax, and gross amounts.
Discount Calculator
Calculate sale price, savings, and stacked discounts.
ROAS Calculator
Calculate return on ad spend, revenue per cost, and surplus.
ROI Calculator
Calculate return, profit, and annualized ROI.
Image Compressor
Compress JPG, PNG, or WebP images privately in your browser.
Merge PDF
Combine PDF files locally without uploading them.
JSON Formatter
Format, validate, and minify JSON locally.
Image Resizer
Resize images by width and height privately in your browser.
PDF Compressor
Optimize PDF structure locally and download the result.
Unit Converter
Convert 18 categories with SI and widely used standards.
Date Calculator
Find days between dates or add days to a date.
Password Generator
Generate strong passwords locally with secure browser randomness.
JPG to PNG
Convert JPG images to lossless PNG locally.
PNG to JPG
Convert PNG images to compact JPG locally.
PDF to JPG
Turn PDF pages into JPG images locally.
UUID Generator
Generate secure UUID v4 identifiers locally.
Base64 Encoder/Decoder
Encode and decode Unicode text as Base64.
WebP to JPG
Convert WebP images to JPG locally.
JPG to PDF
Combine JPG images into a PDF locally.
Split PDF
Extract selected PDF pages locally.
Image Cropper
Crop images to exact dimensions locally.
Case Converter
Switch text between common letter cases.
QR Scanner
Scan QR codes from images privately.
Image to WebP
Convert JPG or PNG images to WebP locally.
WebP to PNG
Convert WebP images to PNG locally.
Rotate PDF
Rotate all or selected PDF pages locally.
Remove PDF Pages
Remove selected pages from a PDF locally.
CSV to JSON
Convert CSV data to JSON locally.
JSON to CSV
Convert JSON arrays to CSV locally.
URL Encoder/Decoder
Encode and decode URL components locally.
Unix Timestamp Converter
Convert Unix timestamps and ISO dates locally.
Markdown Previewer
Write and safely preview Markdown locally.
Online Stopwatch
Precise stopwatch with pause and lap times.
Pomodoro Timer
Custom focus, short break, and long break cycles.
Loan Calculator
Monthly payment, total interest, extra payments, and schedule.
Compound Interest Calculator
Project growth with contributions and compounding frequency.
Age Calculator
Exact age, total days, and next birthday countdown.
PDF to PNG
Render every PDF page as a high-quality PNG locally.
PNG Compressor
Optimize PNG dimensions locally with honest size comparison.
Color Picker
Pick HEX, RGB, HSL and verify WCAG contrast.
Regex Tester
Test JavaScript regular expressions with live matches.
Hash Generator
Generate SHA-256, SHA-384, and SHA-512 for text or files.
Break-even Calculator
Calculate break-even units, revenue, margin, and target profit.
CAGR Calculator
Calculate compound annual growth rate from start and end values.
Tip Calculator
Split bills with tip, tax, totals, and per-person amounts.
Salary Calculator
Convert annual salary into monthly, biweekly, weekly, hourly, and estimated net pay.
BMI Calculator
Calculate adult BMI, category, and healthy-weight range.
Time Zone Converter
Compare a date and time across global IANA time zones.
Text Diff Checker
Compare two texts line by line with additions and removals.
HTML Formatter
Format or minify HTML locally in your browser.
CSS Formatter & Minifier
Format and minify CSS locally without uploads.
Cron Expression Parser
Validate five-field cron expressions and preview upcoming runs.
Value Proposition Builder
Build a testable customer profile, value map, and positioning statement.
Offer Builder
Build a clear offer with outcome, deliverables, transparent pricing, proof, and terms.
Customer Persona Builder
Build a behavior-first persona with goals, barriers, buying criteria, and evidence strength.
Pricing Scenario Calculator
Compare three price and demand scenarios by revenue, contribution margin, profit, and break-even volume.
Content Brief Builder
Create a people-first content brief with intent, audience, evidence, outline, metadata, and links.
SOP Builder
Build a controlled SOP with scope, owners, completion criteria, cautions, records, and a run checklist.
Mortgage Calculator
Estimate principal, interest, taxes, insurance, extra payments, payoff time, and amortization.
Calorie Calculator
Estimate adult resting energy, maintenance calories, and gentle goal ranges by activity level.
Image Metadata Viewer
Inspect image dimensions, file details and common JPEG EXIF fields locally, including GPS privacy signals.
Add Page Numbers to PDF
Add customizable page numbers to selected PDF pages locally with six positions, start number and styling.