Augusto's Tools Hub

74 tools

All processing happens locally — your data never leaves your browser.

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Formatters

Format, beautify, and validate data structures

Encoders

Encode and decode data between formats

Generators

Generate UUIDs, hashes, placeholder text, and more

Converters

Convert between formats, timezones, and representations

Testers

Test and validate patterns, expressions, and schemas

Image Tools

Compress, convert, resize, and transform images in your browser

Calculators

Math, finance, and everyday calculators

PDF Tools

Merge, split, convert, and edit PDF files in your browser

Video & Audio

Trim, convert, and process video and audio files locally

Formatters

Format, beautify, and validate data structures

JSON Formatter & Validator

Format, validate, and beautify JSON data with syntax highlighting. Minify JSON for production use.

Formatters

SQL Formatter

Format and beautify SQL queries with proper indentation. Supports MySQL, PostgreSQL, and standard SQL.

Formatters

Markdown Preview

Write Markdown and see a live rendered preview side-by-side. Supports GFM tables, code blocks, and more.

Formatters

HTML to Markdown Converter

Convert HTML to clean Markdown. Paste HTML from any webpage and get readable Markdown output instantly.

Formatters

SVG Viewer & Cleaner

Preview SVG files in the browser and clean up unnecessary attributes from Figma or Illustrator exports.

Formatters

Encoders

Encode and decode data between formats

Base64 Encode & Decode

Encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8.

Encoders

JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, and signature without verification.

Encoders

URL Encode & Decode

Encode special characters for URLs or decode percent-encoded URL strings.

Encoders

HTML Entity Encoder

Encode special characters to HTML entities or decode HTML entities back to characters.

Encoders

JWT Builder

Build and sign JSON Web Tokens (JWTs) in the browser using HS256. Test authentication flows without a server.

Encoders

Generators

Generate UUIDs, hashes, placeholder text, and more

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text input using the Web Crypto API.

Generators

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words. Copy to clipboard with one click.

Generators

UUID Generator

Generate RFC 4122 compliant UUIDs (v4). Bulk generate up to 100 at once. Secure crypto-random.

Generators

Word & Character Counter

Count words, characters, sentences, and paragraphs. Estimates reading time. Instant live update as you type.

Generators

QR Code Generator

Generate QR codes instantly from any URL or text. Customize size and error correction. Download as PNG.

Generators

Password Generator

Generate strong, cryptographically secure passwords. Customize length and character sets. Zero server contact.

Generators

Color Palette Generator

Generate beautiful color palettes from an image or from a base color. Extract dominant colors or create harmonious schemes.

Generators

CSS Gradient Generator

Build beautiful CSS gradients visually. Supports linear, radial, and conic gradients with live preview.

Generators

CSS Box Shadow Generator

Build CSS box-shadow declarations visually with live preview. Supports multiple shadows, inset shadows, and full color control.

Generators

Meta Tag Generator

Generate complete HTML meta tags, Open Graph, and Twitter Card tags. Preview how your page looks when shared on social media.

Generators

Bcrypt Hash Generator

Generate Bcrypt hashes from plaintext and verify passwords against hashes. Pure client-side using bcryptjs.

Generators

Pomodoro Timer

Classic 25/5 Pomodoro productivity timer with custom durations and browser notification support. Stay focused.

Generators

QR Code Scanner

Scan and decode QR codes from an uploaded image in your browser. Reads URL, text, Wi-Fi, vCard, and other QR formats.

Generators

Barcode Generator

Generate Code128, EAN-13, EAN-8, UPC-A, and other barcodes in your browser. Download as SVG or PNG for print and digital use.

Generators

Converters

Convert between formats, timezones, and representations

Color Converter

Convert colors between HEX, RGB, HSL, and HSV formats. Live color preview included.

Converters

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. Live current timestamp display.

Converters

Roman Numeral Converter

Convert Arabic numbers to Roman numerals and Roman numerals back to Arabic numbers. Supports 1–3999.

Converters

Text Case Converter

Convert text between camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE, Title Case, and more.

Converters

Number Base Converter

Convert numbers between Binary, Octal, Decimal, and Hexadecimal. Live conversion as you type.

Converters

JSON ↔ CSV Converter

Convert JSON arrays to CSV and CSV back to JSON. Handles nested objects and special characters. Download the result.

Converters

YAML ↔ JSON Converter

Convert YAML to JSON and JSON to YAML instantly. Perfect for Kubernetes, Docker Compose, GitHub Actions, and Helm charts.

Converters

PDF to Images

Convert PDF pages to PNG images in your browser. No upload to server. Download individual pages or all as a ZIP.

Converters

Unit Converter

Convert between units of length, weight, temperature, speed, area, volume, and more. Instant results as you type.

Converters

Morse Code Translator

Translate text to Morse code and back. Play audio of your Morse message. Supports letters, numbers, and punctuation.

Converters

Testers

Test and validate patterns, expressions, and schemas

Regex Tester

Test regular expressions against sample text in real-time. Highlights matches and capture groups.

Testers

Diff Checker

Compare two blocks of text and see differences highlighted line-by-line. Supports inline and side-by-side view.

Testers

Cron Expression Parser

Parse and validate cron expressions. See next scheduled run times in human-readable format.

Testers

Password Strength Checker

Check how strong your password is. See estimated crack time, entropy, and tips to improve it. Fully private — no server contact.

Testers

Image Tools

Compress, convert, resize, and transform images in your browser

Image Resizer

Resize images online without losing quality. Set exact pixel dimensions or scale by percentage. Works entirely in your browser.

Image Tools

Image to Base64

Convert any image to a Base64 data URL for use in HTML, CSS, or JSON. Supports PNG, JPEG, GIF, WebP, and SVG.

Image Tools

Image Format Converter

Convert images between PNG, JPEG, WebP, and BMP formats instantly. No upload to server — everything runs in your browser.

Image Tools

Image Compressor

Compress JPEG, PNG, and WebP images online for free. Reduce file size without losing visible quality. 100% browser-based.

Image Tools

Favicon Generator

Generate all favicon sizes from a single image. Download a ready-to-use ZIP with 16×16 to 512×512 PNGs and a site.webmanifest.

Image Tools

Passport Photo Maker

Crop and resize your photo to official passport and ID dimensions in your browser. Supports US, EU, and common international formats.

Image Tools

Image Watermark Tool

Add a text or image watermark to photos in your browser. Control position, opacity, and font. Download the watermarked image instantly.

Image Tools

Calculators

Math, finance, and everyday calculators

Percentage Calculator

Calculate percentages instantly. What is X% of Y? X is what % of Y? Percentage change between two values.

Calculators

Age Calculator

Calculate exact age from date of birth in years, months, and days. See how many days until your next birthday.

Calculators

Aspect Ratio Calculator

Calculate aspect ratios and scale dimensions. Enter width and height to get the simplified ratio or scale to any size.

Calculators

Loan & Mortgage Calculator

Calculate monthly payments, total interest, and see a full amortisation schedule for any loan or mortgage.

Calculators

HELOC Payment Calculator

Estimate HELOC draw-period and repayment-period payments entirely in your browser. Compare interest-only and amortized scenarios responsibly.

Calculators

Refinance Calculator

Compare your current mortgage or loan payment with a refinance option, including monthly savings, break-even timing, and estimated lifetime cost.

Calculators

Compound Interest Calculator

Project compound growth with recurring monthly contributions. See future value, total contributions, and interest earned with no server processing.

Calculators

APY Calculator

Convert nominal interest rates into APY, compare compounding frequencies, and estimate one-year earnings on a deposit.

Calculators

CD Calculator

Estimate certificate of deposit maturity value, interest earned, and APY impact with fully local calculations and clear educational disclaimers.

Calculators

Debt Payoff Calculator

Estimate payoff time, total interest, and interest savings when you add extra payments to a credit card or loan balance.

Calculators

Profit Margin Calculator

Calculate profit, gross margin, and markup from your revenue and cost inputs. Useful for ecommerce, freelance, and SMB pricing.

Calculators

ROI Calculator

Estimate return on investment from total cost, ending value, and extra costs. See net profit and ROI percentage instantly in your browser.

Calculators

Retirement Calculator

Model long-term retirement savings growth with monthly contributions and estimated annual return. Educational estimates only.

Calculators

Break-Even Calculator

Estimate the sales volume or revenue needed to cover costs. Useful for startups, creators, and ecommerce planning.

Calculators

Commission Calculator

Calculate gross commission, effective commission rate, and post-split payout for sales and affiliate scenarios.

Calculators

Sales Tax / VAT Calculator

Add or remove sales tax and VAT from a price instantly with local-only calculations and clear percentage math.

Calculators

Auto Loan Calculator

Estimate car payment scenarios including down payment, trade-in, and financing term with fully local calculations.

Calculators

PDF Tools

Merge, split, convert, and edit PDF files in your browser

PDF Merge Tool

Merge multiple PDF files into one document entirely in your browser. No upload required. Reorder pages before combining.

PDF Tools

PDF Split Tool

Split a PDF into individual pages or custom page ranges in your browser. Download each part as a separate file.

PDF Tools

JPG to PDF Converter

Convert one or more images (JPG, PNG, WebP) to a PDF in your browser. Reorder images before exporting.

PDF Tools

PDF Page Editor

Reorder, rotate, or delete pages from a PDF file entirely in your browser. Preview changes before downloading.

PDF Tools

OCR Image to Text

Extract text from images and scanned PDFs using Tesseract OCR — fully in your browser. No files ever leave your device.

PDF Tools

Video & Audio

Trim, convert, and process video and audio files locally

Video Trimmer

Trim and cut video files in your browser using FFmpeg WebAssembly. No upload, no account needed. Download instantly.

Video & Audio

MP4 to GIF Converter

Convert MP4 video clips to animated GIF in your browser with FFmpeg. Control frame rate and size for optimized output.

Video & Audio

MP4 to MP3 Converter

Extract audio from video files and save as MP3 — all in your browser via FFmpeg WebAssembly. Your files never leave your device.

Video & Audio

Video Compressor

Compress MP4 videos to reduce file size in your browser using FFmpeg WebAssembly. Choose quality preset and keep files private.

Video & Audio

Video Cropper & Resizer

Crop and resize video files to a specific resolution or aspect ratio in your browser with FFmpeg WebAssembly.

Video & Audio

Audio Trimmer

Trim and cut MP3 or WAV audio files in your browser. Set start and end times and download the clipped audio instantly.

Video & Audio

Subtitle Sync Editor

Adjust subtitle timing in SRT files — shift all cues or fine-tune individual lines. Download the fixed subtitle file instantly.

Video & Audio