TToolbox
Free browser-based utilities

Free Online PDF, Image, Document & Calculator Tools

Use free online tools for PDF conversion, image compression, JPG to PDF, PDF to Word, invoices, QR codes, calculators, developer tasks and more. No signup required, with browser-based processing wherever practical.

Find a tool
✓ Free to use✓ Mobile friendly✓ Privacy first✓ No account required
29 tools
Popular starting pointsSaved only on this device
PDF

JPG to PDF

Convert JPG, PNG or WebP images into one ordered PDF with A4 or US Letter page options and margins.

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IMA

Image Compressor

Compress JPG, PNG or WebP images, choose output format and quality, and optionally resize large images.

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CAL

Percentage Calculator

Calculate percentages, percentage change and one value as a percentage of another.

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BUS

Invoice Generator

Create a PDF invoice with multiple line items, dates, currencies, discount, tax or VAT, notes and calculated totals.

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UTI

QR Code Generator

Generate a downloadable PNG QR code for a URL or text with selectable size and error-correction level.

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UTI

Strong Password Generator

Generate cryptographically secure random passwords with configurable length, character groups and ambiguous-character filtering.

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PROFENG Toolbox

All tools

Choose by task, save favorites and return to recently used tools. Most processing stays in your browser.

Text

01

Character Counter

Count characters, words, spaces, lines, sentences and reading time instantly.

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02

Word Counter

Count words, characters, sentences, paragraphs and estimated reading or speaking time.

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03

Case Converter

Convert text to uppercase, lowercase, title case, sentence case or a clean URL slug.

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Calculators

01

Percentage Calculator

Calculate percentages, percentage change and one value as a percentage of another.

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02

Tip Calculator

Calculate a tip, total bill, per-person cost and split gratuity between people.

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03

Age Calculator

Calculate exact age in years, months and days plus total days and next birthday.

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04

Calorie Counter

Estimate daily calorie needs, BMR and TDEE from age, body size and activity level, with maintenance and moderate goal targets.

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Developer

01

Base64 Encoder / Decoder

Encode Unicode text to Base64 or decode Base64, including URL-safe Base64.

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02

UUID Generator

Generate one or many cryptographically secure UUID v4 identifiers in your browser.

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03

Timestamp Converter

Convert Unix timestamps to readable local and ISO dates, or convert dates back to Unix time.

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Everyday

01

Random Number Generator

Generate one or many cryptographically secure whole numbers between a minimum and maximum.

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Images

01

Passport Photo Maker

Crop and size passport-style photos for 2×2 inch and 35×45 mm formats directly in your browser.

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02

Image Compressor

Compress JPG, PNG or WebP images, choose output format and quality, and optionally resize large images.

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Home

01

US Solar Savings Calculator

Estimate U.S. home solar production, self-consumption, exports, savings, simple payback and 25-year value.

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02

Cyprus Solar Savings Calculator

Estimate Cyprus photovoltaic production, self-consumption, exports, savings, payback and long-term value.

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03

Greece Solar Savings Calculator

Estimate Greece photovoltaic production, self-consumption, exports, savings, payback and long-term value.

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04

US Roof Replacement Cost Calculator

Estimate a U.S. roof replacement cost range by area, material, pitch, stories, access, waste and tear-off.

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PDF

01

Compress PDF

Reduce PDF file size with lossless optimization or stronger image-based compression modes, entirely in your browser.

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02

JPG to PDF

Convert JPG, PNG or WebP images into one ordered PDF with A4 or US Letter page options and margins.

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03

Merge PDF

Combine multiple PDF files into one document, reorder them and remove unwanted files before merging.

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04

Sign PDF

Add a visible typed signature mark to a selected PDF page with position, size and optional date controls.

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Converters

01

PDF to Word

Extract readable text from a PDF and create a genuine editable DOCX file with page breaks.

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02

Word to PDF

Render a DOCX document in your browser and export it as A4 or US Letter PDF with adjustable margins.

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03

Excel to PDF

Convert XLSX or XLS worksheets into printable PDF tables, exporting one sheet or the full workbook.

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04

PowerPoint to PDF

Convert PPTX slides to PDF while preserving basic text placement and common PNG or JPEG slide images.

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Business

01

Invoice Generator

Create a PDF invoice with multiple line items, dates, currencies, discount, tax or VAT, notes and calculated totals.

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02

CV Builder

Create a clean professional multi-section CV with contact details, profile, experience, education and skills, then export PDF.

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Utilities

01

QR Code Generator

Generate a downloadable PNG QR code for a URL or text with selectable size and error-correction level.

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02

Strong Password Generator

Generate cryptographically secure random passwords with configurable length, character groups and ambiguous-character filtering.

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Designed differently

Fast tools with clear results and limitations.

Where practical, calculations, file transformations and generators run locally on your device. Each tool explains what it does, what the output contains and any important limitations before you rely on the result.